HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis to San Diego (STL - SAN) from $62

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SAN
May 8 — May 151
From?
To?
Wed 5/8
Wed 5/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to San Diego are usually found in September or January, booked 28 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 3, 2024.

Popular in

March

Cheapest in

September

Round-trip from

$288

One-way from

$123
High demand for flights, 25% potential price rise
Search Deals
Best time to find cheap flights, 29% potential price drop
Search Deals
From Lambert-St Louis to San Diego
Search Deals
One-way flight from Lambert-St Louis to San Diego
Search Deals

What is the cheapest day to fly round-trip from St. Louis to San Diego?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Diego. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from St. Louis to San Diego?

Travelers have found it’s best to book a flight 29 days in advance to save up to 71% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 29 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to San Diego 1-2 weeks in advance for as low as $258, or $456 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to San Diego?

The best pricing can be found in the month of September. Prices to San Diego from St. Louis average $422. You can even find prices in September for less than $422, as users have found deals to San Diego from as low as $149. The month of March appears to be one of the more expensive times to travel to San Diego from St. Louis. Flying in the targeted month can save you up to 32%.

When is the cheapest time to fly from St. Louis to San Diego (STL - SAN)?

Unlike at noon, when flights are generally more expensive, you can save up to 51% on flights from St. Louis to San Diego by exploring options for tickets in the evening.

Cheap Spirit Airlines flights from St. Louis to San Diego

Explore cheap flight options specifically provided by Spirit Airlines for the route between St. Louis and San Diego. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Take a peek at the cheapest Spirit Airlines flights we've detected traveling from St. Louis to San Diego. Come back soon if you're not finding the exact deal you're looking for.
Wed 5/2911:36 amSTL - SAN
1 stop12h 49mSpirit Airlines
Sun 6/22:05 pmSAN - STL
1 stop23h 09mSpirit Airlines
Deal found 5/2$100
Wed 5/2911:36 amSTL - SAN
1 stop10h 46mSpirit Airlines
Sun 6/210:04 amSAN - STL
2 stops27h 10mSpirit Airlines
Deal found 5/2$114
Wed 5/2911:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 6/26:15 amSAN - STL
2 stops30h 59mSpirit Airlines
Deal found 5/2$131
Mon 5/134:05 pmSTL - SAN
1 stop19h 09mSpirit Airlines
Sun 5/199:12 pmSAN - STL
1 stop16h 02mSpirit Airlines
Deal found 5/1$153
Fri 5/314:05 pmSTL - SAN
1 stop9h 16mSpirit Airlines
Sun 6/210:04 amSAN - STL
2 stops27h 10mSpirit Airlines
Deal found 5/1$170
Sat 5/1811:39 amSTL - SAN
2 stops23h 35mSpirit Airlines
Tue 5/219:12 pmSAN - STL
1 stop11h 34mSpirit Airlines
Deal found 5/2$171
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mSpirit Airlines
Mon 6/1010:10 amSAN - STL
2 stops22h 47mSpirit Airlines
Deal found 5/2$178
Sat 5/1811:39 amSTL - SAN
2 stops23h 35mSpirit Airlines
Tue 5/216:15 amSAN - STL
2 stops26h 31mSpirit Airlines
Deal found 5/2$188
Fri 5/314:05 pmSTL - SAN
2 stops16h 50mSpirit Airlines
Sun 6/210:04 amSAN - STL
2 stops27h 10mSpirit Airlines
Deal found 5/1$189

Cheap Frontier flights from St. Louis to San Diego

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and San Diego. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
To aid your search, here are some of the cheapest Frontier flights we've found from St. Louis to San Diego. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Tue 6/42:12 pmSTL - SAN
1 stop7h 09mFrontier
Sat 6/85:56 pmSAN - STL
1 stop18h 41mFrontier
Deal found 5/1$138
Fri 5/105:35 pmSTL - SAN
1 stop16h 57mFrontier
Sat 5/188:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/1$139
Fri 5/316:40 pmSTL - SAN
1 stop17h 28mFrontier
Sun 6/28:04 amSAN - STL
1 stop23h 32mFrontier
Deal found 5/1$140
Fri 5/316:40 pmSTL - SAN
1 stop17h 28mFrontier
Fri 6/71:57 pmSAN - STL
1 stop17h 32mFrontier
Deal found 5/2$149
Tue 5/147:51 pmSTL - SAN
1 stop21h 32mFrontier
Sun 5/1911:38 amSAN - STL
1 stop20h 35mFrontier
Deal found 5/2$150
Sat 5/188:04 pmSTL - SAN
1 stop13h 00mFrontier
Sun 5/2611:30 amSAN - STL
1 stop9h 02mFrontier
Deal found 5/2$151
Mon 5/207:23 pmSTL - SAN
1 stop25h 58mFrontier
Mon 5/278:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/2$156
Fri 5/105:35 pmSTL - SAN
1 stop28h 40mFrontier
Mon 5/139:32 pmSAN - STL
1 stop10h 37mFrontier
Deal found 5/2$165
Sat 6/298:02 pmSTL - SAN
1 stop12h 59mFrontier
Sat 7/68:41 pmSAN - STL
1 stop11h 37mFrontier
Deal found 5/2$177

Cheap St. Louis to San Diego flights in May & June 2024

Find cheap flight options from St. Louis to San Diego specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 3, 2024.
These are some of the most attractive deals on flights from St. Louis to San Diego in 2024. Check back in a little while for more flight options.
Wed 5/2911:36 amSTL - SAN
1 stop12h 49mSpirit Airlines
Sun 6/22:05 pmSAN - STL
1 stop23h 09mSpirit Airlines
Deal found 5/2$100
Wed 5/2911:36 amSTL - SAN
1 stop10h 46mSpirit Airlines
Sun 6/210:04 amSAN - STL
2 stops27h 10mSpirit Airlines
Deal found 5/2$114
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Mon 6/1010:28 amSAN - STL
1 stop9h 31mMultiple Airlines
Deal found 5/2$116
Sat 5/188:04 pmSTL - SAN
1 stop13h 00mMultiple Airlines
Tue 5/219:12 pmSAN - STL
1 stop11h 34mMultiple Airlines
Deal found 5/2$120
Wed 5/2911:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 6/26:15 amSAN - STL
2 stops30h 59mSpirit Airlines
Deal found 5/2$131
Tue 6/42:12 pmSTL - SAN
1 stop7h 09mFrontier
Sat 6/85:56 pmSAN - STL
1 stop18h 41mFrontier
Deal found 5/1$138
Fri 5/105:35 pmSTL - SAN
1 stop16h 57mFrontier
Sat 5/188:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/1$139
Fri 5/316:40 pmSTL - SAN
1 stop17h 28mFrontier
Sun 6/28:04 amSAN - STL
1 stop23h 32mFrontier
Deal found 5/1$140
Mon 5/134:05 pmSTL - SAN
1 stop19h 09mMultiple Airlines
Thu 5/162:08 pmSAN - STL
1 stop5h 58mMultiple Airlines
Deal found 5/2$148

St. Louis to San Diego 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and San Diego in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
These are some of the most attractive deals on flights from St. Louis to San Diego in 2024. Check back in a little while for more flight options.
Wed 5/2911:36 amSTL - SAN
1 stop12h 49mSpirit Airlines
Sun 6/22:05 pmSAN - STL
1 stop23h 09mSpirit Airlines
Deal found 5/2$100
Wed 5/2911:36 amSTL - SAN
1 stop10h 46mSpirit Airlines
Sun 6/210:04 amSAN - STL
2 stops27h 10mSpirit Airlines
Deal found 5/2$114
Wed 6/51:55 pmSTL - SAN
1 stop10h 32mMultiple Airlines
Mon 6/1010:28 amSAN - STL
1 stop9h 31mMultiple Airlines
Deal found 5/2$116
Sat 5/188:04 pmSTL - SAN
1 stop13h 00mMultiple Airlines
Tue 5/219:12 pmSAN - STL
1 stop11h 34mMultiple Airlines
Deal found 5/2$120
Wed 5/2911:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 6/26:15 amSAN - STL
2 stops30h 59mSpirit Airlines
Deal found 5/2$131
Tue 6/42:12 pmSTL - SAN
1 stop7h 09mFrontier
Sat 6/85:56 pmSAN - STL
1 stop18h 41mFrontier
Deal found 5/1$138
Fri 5/105:35 pmSTL - SAN
1 stop16h 57mFrontier
Sat 5/188:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/1$139
Fri 5/316:40 pmSTL - SAN
1 stop17h 28mFrontier
Sun 6/28:04 amSAN - STL
1 stop23h 32mFrontier
Deal found 5/1$140
Mon 5/134:05 pmSTL - SAN
1 stop19h 09mMultiple Airlines
Thu 5/162:08 pmSAN - STL
1 stop5h 58mMultiple Airlines
Deal found 5/2$148

St. Louis to San Diego flights leaving soon

Find last-minute flight options from St. Louis to San Diego for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to San Diego. To prevent any unwanted surprises, users should verify their flight info before booking.
Fri 5/105:35 pmSTL - SAN
1 stop16h 57mFrontier
Sat 5/188:21 pmSAN - STL
1 stop11h 52mFrontier
Deal found 5/1$139
Fri 5/107:51 pmSTL - SAN
1 stop21h 14mFrontier
Thu 5/1611:08 amSAN - STL
1 stop8h 58mFrontier
Deal found 5/2$150
Wed 5/811:36 amSTL - SAN
1 stop23h 38mMultiple Airlines
Sun 5/196:19 pmSAN - STL
1 stop13h 54mMultiple Airlines
Deal found 5/2$152
Fri 5/105:35 pmSTL - SAN
1 stop28h 40mFrontier
Mon 5/139:32 pmSAN - STL
1 stop10h 37mFrontier
Deal found 5/2$165
Wed 5/87:51 pmSTL - SAN
1 stop21h 38mFrontier
Sun 5/128:23 amSAN - STL
1 stop23h 24mFrontier
Deal found 5/1$181
Wed 5/811:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 5/199:12 pmSAN - STL
1 stop16h 02mSpirit Airlines
Deal found 5/2$218
Tue 5/710:59 pmSTL - SAN
1 stop10h 35mFrontier
Sat 5/119:14 pmSAN - STL
1 stop11h 04mFrontier
Deal found 5/1$229
Wed 5/811:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 5/196:15 amSAN - STL
2 stops30h 59mSpirit Airlines
Deal found 5/2$308
Wed 5/811:36 amSTL - SAN
2 stops28h 49mSpirit Airlines
Sun 5/122:05 pmSAN - STL
1 stop23h 09mSpirit Airlines
Deal found 5/1$313

One-way flights to San Diego from St. Louis

Search for one-way flight options from St. Louis to San Diego. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Users in need of a one-way flight from St. Louis to San Diego can choose from these deals. Users in need of a round-trip flight from St. Louis to San Diego instead should update the search form at the top of page.
Mon 5/134:05 pmSTL - SAN
1 stop19h 09mSpirit Airlines
Deal found 5/2$62
Mon 5/274:05 pmSTL - SAN
1 stop9h 48mSpirit Airlines
Deal found 5/2$75
Fri 5/105:35 pmSTL - SAN
1 stop28h 40mFrontier
Deal found 5/2$81
Tue 6/253:47 pmSTL - SAN
1 stop7h 35mFrontier
Deal found 5/2$90
Fri 5/314:05 pmSTL - SAN
2 stops23h 43mSpirit Airlines
Deal found 5/2$94
Sat 6/297:29 pmSTL - SAN
1 stop14h 16mFrontier
Deal found 5/2$100
Mon 7/228:00 pmSTL - SAN
1 stop12h 24mFrontier
Deal found 5/2$104
Thu 6/277:29 pmSTL - SAN
1 stop16h 05mFrontier
Deal found 5/2$111
Sun 5/1911:22 pmSTL - SAN
1 stop9h 42mFrontier
Deal found 5/2$115

Find flights from St. Louis to San Diego within your budget

Customize your flight search to find flights from St. Louis to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$100 - $148

Route

Depart

Return

Price

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 5/29

1 stop12h 49m

San Diego

Sun 6/2

1 stop23h 09m

$100

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 5/29

1 stop10h 46m

San Diego

Sun 6/2

2 stops27h 10m

$114

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 6/5

1 stop10h 32m

San Diego

Mon 6/10

1 stop9h 31m

$116

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Sat 5/18

1 stop13h 00m

San Diego

Tue 5/21

1 stop11h 34m

$120

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Wed 5/29

2 stops28h 49m

San Diego

Sun 6/2

2 stops30h 59m

$131

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Tue 6/4

1 stop7h 09m

San Diego

Sat 6/8

1 stop18h 41m

$138

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Tue 5/14

1 stop10h 35m

San Diego

Sat 5/18

1 stop11h 52m

$139

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Fri 5/31

1 stop17h 28m

San Diego

Sun 6/2

1 stop23h 32m

$140

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 5/13

1 stop19h 09m

San Diego

Thu 5/16

1 stop5h 58m

$148

Flights are sorted by cheapest first

Deals found on 5/2

When is the best time to book a flight from St. Louis to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San Diego. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from St. Louis to San Diego, you should look to book at least 28 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

When is the cheapest time to fly from St. Louis to San Diego?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to San Diego. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to San Diego flight should consider departing on Sunday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to San Diego by month

Plan your trip from St. Louis to San Diego by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to San Diego is currently $92 while a round-trip flight costs $127. Price data was last updated on April 28, 2024.

Currently, October is the cheapest month in which you can book a flight from St. Louis to San Diego (average of $288). Flying from St. Louis to San Diego in June is currently the most expensive (average of $360). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$292

February

$297

March

$339

April

$301

May

$304

June

$360

July

$359

August

$311

September

$298

October

$288

November

$335

December

$305

Temperature and rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average temperature and rainfall totals by month.

SAN

Temperature

57.2 - 71.6 °F

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated May 3, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines, Frontier and Alaska Airlines from St. Louis to San Diego to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Alaska Airlines
8.1
Very good
9,123 reviews
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Delta
8.1
Very good
10,858 reviews
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

United Airlines
7.4
Good
11,143 reviews
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

American Airlines
7.3
Good
14,767 reviews
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Spirit Airlines
6.4
Okay
8,737 reviews
Alaska Airlines
8.1
Very good
9,123 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Entertainment

7.3

Overall

8.1

Food

7.3

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from St. Louis to San Diego?

    If you book a flight from St. Louis to San Diego, you will be flying from Lambert-St Louis to San Diego. Flights to San Diego (SAN) from Lambert-St Louis (STL) take 5h 46m for a nonstop flight. There is 1 flight from Lambert-St Louis to San Diego per day from 6 airlines.

  • Can I find flights from St. Louis to San Diego for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to San Diego for under $100. The cheapest flight booked recently is on Spirit Airlines for just $100, but on average you can expect to pay $147.

  • Are there last-minute flights available from St. Louis to San Diego for under $200?

    There are currently 19+ open flights from St. Louis to San Diego within the next 7 days for less than $200.

  • What are the cheapest airlines flying from St. Louis to San Diego round-trip?

    Flying on Spirit Airlines is currently your cheapest option to San Diego, with prices starting at $100. Another option worth looking into is Frontier, starting at $138 round trip. You may be able to fly from St. Louis to San Diego for 76% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to San Diego one-way?

    The cheapest airlines for a one-way flight from St. Louis to San Diego are Spirit Airlines ($62), Frontier ($81), and Delta ($123).

  • What are the most popular airlines that fly from St. Louis to San Diego?

    Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to San Diego.

  • What does STL to SAN mean?

    STL and SAN are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to SAN refers to a flight route from Lambert-St Louis Airport to San Diego Airport.

  • Where are the most common layover locations when flying from St. Louis to San Diego?

    St. Louis to San Diego flights have a layover in Denver most often.

  • What are some popular things to do or see while on a layover in Denver?

    The majority of Denver visitors spend their time at Coors Field, 16th Street Mall, and Civic Center Park. Travelers on a layover in Denver can visit Coors Field, 16th Street Mall, and Civic Center Park, by traveling 18.4 mi, 18.7 mi, and 18.7 mi, respectively after landing at Denver Intl. Travelers can rent a car at Denver Intl for an average daily rate of $44 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for St. Louis to San Diego flights?

    St. Louis to San Diego flights have a layover in Phoenix the least frequently.

  • Can I find deals for flights from St. Louis to San Diego that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to San Diego flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to San Diego with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to San Diego flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to San Diego that include hotel bookings?

    Yes. In addition to deals on St. Louis to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Diego.

  • Can I find deals for business class flights from St. Louis to San Diego?

    Yes. Cheapflights offers flight deals from St. Louis to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to San Diego that allow pets onboard?

    Many airlines flying from St. Louis to San Diego offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to San Diego?

    Yes, you can often find last-minute deals on St. Louis to San Diego flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to San Diego flight deals updated?

    The St. Louis to San Diego flight deals you see on this page were last updated on 5/2.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to San Diego
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Los Angeles flights
St. Louis to Los Angeles flights
St. Louis to San Francisco flights
Kansas City to Ontario flights
Kansas City to Burbank flights
Kansas City to San Francisco flights
St. Louis to Ontario flights
Kansas City to San Diego flights
St. Louis to Oakland flights
Kansas City to Oakland flights
Kansas City to Reno flights
St. Louis to Sacramento flights
Kansas City to Santa Ana flights
St. Louis to San Jose flights
Springfield to Los Angeles flights
Springfield to San Diego flights
Kansas City to Sacramento flights
St. Louis to Santa Ana flights
Kansas City to Palm Springs flights
St. Louis to Palm Springs flights
Springfield to Ontario flights
Springfield to San Francisco flights
St. Louis to Fresno flights
Kansas City to Long Beach flights
St. Louis to Reno flights
Kansas City to Bakersfield flights
St. Louis to Burbank flights
Kansas City to San Jose flights
Kansas City to Fresno flights
St. Louis to Santa Barbara flights
St. Louis to Long Beach flights
Springfield to Fresno flights
Springfield to Sacramento flights
Springfield to Burbank flights
Springfield to San Jose flights
Springfield to Santa Ana flights
Kansas City to Monterey flights
Springfield to Reno flights
St. Louis to Monterey flights
Kansas City to Santa Barbara flights
Springfield to Palm Springs flights
Kansas City to Santa Rosa flights
Columbia to San Diego flights
Kansas City to Tijuana flights
Springfield to Oakland flights
Columbia to Ontario flights
St. Louis to San Luis Obispo flights
Joplin to Sacramento flights
Columbia to Sacramento flights

Top 6 airlines flying from St. Louis to San Diego

Discover the top 6 airlines that operate flights from St. Louis to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$205FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$130Average$262FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$207Average$438FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$235Average$382FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$298Average$438FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest$617Average$718FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
USA to France flights
Seattle to Orlando flights
New York John F Kennedy Intl Airport to Paris flights
Minneapolis to Las Vegas flights
Seattle to Las Vegas flights
Orlando to Phoenix flights
New York to Las Vegas flights
USA to Australia flights
Seattle to Cancún flights
Chicago to New York flights
Chicago to Boston flights
St. Louis to Sao Paulo flights

Search flights from St. Louis to San Diego by cabin class

Find flights from St. Louis to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from St. Louis to San Diego

Find hourly flight availability from St. Louis to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 3, 2024.
24%of flight departuresEarly morningMidnight to 6 am
38%of flight departuresMorning6 am to noon
38%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to San Diego

Explore weekly flight availability from St. Louis to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 3, 2024.
Sunday3daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday1daily flight

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Saint Peter Jersey
Flights to Kirkwall Arpt
Flights to Skiathos
Flights to Naxos
Flights to Ningbo Lishe Intl
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Bodø
Flights to Pellston Emmet County
Flights to Cornwall Newquay
Flights to Ordu/Giresun
Flights to Batumi
Flights to Mason City
Flights to Biarritz Parme
Flights to Zakynthos Dionsios Salomos
Flights to Cortez Montezuma County
Flights to Clermont-Ferrand Aulnat
Flights to Nevsehir
Flights to Hyannis Barnstable
Flights to Girona Costa Brava
Flights to Kagoshima
Flights to Perugia Sant Egidio
Flights to Oran Es Senia
Flights to Chios

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to San Diego?

When you search for this flight from St. Louis to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to San Diego?

Cheapflights helps you find that perfect flight to San Diego from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis to San Diego with no change fees?

Yes! Cheapflights helps users easily find flights from St. Louis to San Diego with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to San Diego become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines