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Cheap flights from Illinois to San Diego (SAN) from $72

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 8/13. 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.
ORD — SAN
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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How far in advance should I book a flight from Illinois to San Diego?

Find a great deal and save up to 8% by booking at least 8 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to San Diego within the next two weeks, with the cheapest ticket starting at $288.

What is the cheapest month to fly from Illinois to San Diego?

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, September can be a great choice for travel to San Diego. Flights to San Diego from Illinois in September are about $400 on average during September, but can be found for as low as $150.

What is the cheapest time of day to fly from IL to SAN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Diego as you normally would.

Cheap Illinois to San Diego flights in June & July 2024

Find cheap flight options from Illinois to San Diego specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
Check out some of the best flight deals from Illinois to San Diego in 2024. Check back in a little while for more flight options.
Wed 7/1710:32 pmSTL - SAN
1 stop15h 51mFrontier
Wed 7/242:49 pmSAN - STL
1 stop5h 20mFrontier
Deal found 6/5$159
Mon 7/1512:12 pmSTL - SAN
1 stop6h 10mFrontier
Wed 7/242:49 pmSAN - STL
1 stop5h 20mFrontier
Deal found 6/5$161
Sat 6/87:29 pmSTL - SAN
1 stop14h 16mFrontier
Wed 7/102:44 pmSAN - STL
1 stop5h 25mFrontier
Deal found 6/5$166
Sun 7/1410:32 pmSTL - SAN
1 stop19h 50mFrontier
Wed 7/242:49 pmSAN - STL
1 stop5h 20mFrontier
Deal found 6/5$167
Sat 6/158:50 pmMDW - SAN
1 stop12h 55mFrontier
Sat 6/228:24 pmSAN - MDW
1 stop6h 57mFrontier
Deal found 6/6$169
Sat 6/157:29 pmSTL - SAN
1 stop14h 16mFrontier
Mon 6/2410:28 amSAN - STL
1 stop8h 42mFrontier
Deal found 6/4$169
Thu 6/68:38 pmMDW - SAN
1 stop19h 40mFrontier
Sat 8/312:54 pmSAN - MDW
1 stop18h 58mFrontier
Deal found 6/5$170
Tue 7/96:00 amMDW - SAN
1 stop14h 47mFrontier
Thu 7/251:22 pmSAN - MDW
1 stop13h 23mFrontier
Deal found 6/5$171
Sat 6/157:29 pmSTL - SAN
1 stop14h 16mFrontier
Fri 6/218:21 pmSAN - STL
1 stop12h 21mFrontier
Deal found 6/5$171

Illinois to San Diego 2024 flight deals

Discover exclusive flight deals for travel between Illinois and San Diego in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Check out some of the best flight deals from Illinois to San Diego in 2024. Check back in a little while for more flight options.
Tue 8/208:18 pmORD - SAN
1 stop13h 14mSpirit Airlines
Tue 8/278:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Deal found 6/5$115
Wed 8/218:18 pmORD - SAN
1 stop13h 14mSpirit Airlines
Tue 8/278:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Deal found 6/6$124
Tue 9/106:00 amMDW - SAN
1 stop9h 29mFrontier
Sun 9/156:02 pmSAN - MDW
1 stop10h 31mFrontier
Deal found 6/5$132
Tue 9/108:00 amORD - SAN
1 stop7h 29mFrontier
Sat 9/148:41 pmSAN - ORD
1 stop6h 06mFrontier
Deal found 6/5$132
Wed 8/218:18 pmORD - SAN
1 stop13h 14mSpirit Airlines
Mon 8/268:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Deal found 6/6$137
Mon 8/194:09 pmMDW - SAN
1 stop29h 12mFrontier
Sat 8/249:14 pmSAN - MDW
1 stop11h 28mFrontier
Deal found 6/6$138
Sun 8/187:30 pmORD - SAN
1 stop26h 11mFrontier
Sat 8/242:54 pmSAN - ORD
1 stop7h 17mFrontier
Deal found 6/6$138
Fri 8/236:00 amMDW - SAN
1 stop26h 24mFrontier
Tue 8/278:36 amSAN - MDW
1 stop10h 26mFrontier
Deal found 6/6$139
Thu 8/227:30 pmORD - SAN
1 stop16h 44mFrontier
Wed 8/282:20 pmSAN - ORD
1 stop8h 43mFrontier
Deal found 6/4$139

Illinois to San Diego flights leaving soon

Find last-minute flight options from Illinois 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 3,050,429 searches. Data last updated June 6, 2024.
Users seeking a last-minute flight from Illinois to San Diego should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Sat 6/158:50 pmMDW - SAN
1 stop12h 55mFrontier
Sat 6/228:24 pmSAN - MDW
1 stop6h 57mFrontier
Deal found 6/6$169
Sat 6/157:29 pmSTL - SAN
1 stop14h 16mFrontier
Mon 6/2410:28 amSAN - STL
1 stop8h 42mFrontier
Deal found 6/4$169
Sat 6/157:29 pmSTL - SAN
1 stop14h 16mFrontier
Fri 6/218:21 pmSAN - STL
1 stop12h 21mFrontier
Deal found 6/5$171
Sat 6/158:50 pmMDW - SAN
1 stop12h 55mFrontier
Sat 6/228:24 pmSAN - MDW
1 stop6h 57mFrontier
Deal found 6/5$174
Sat 6/1510:11 pmORD - SAN
1 stop10h 50mFrontier
Thu 6/208:24 pmSAN - ORD
1 stop7h 18mFrontier
Deal found 6/5$180
Wed 6/129:53 pmORD - SAN
1 stop11h 08mFrontier
Thu 6/208:24 pmSAN - ORD
1 stop7h 18mFrontier
Deal found 6/5$182
Sat 6/158:50 pmMDW - SAN
1 stop12h 55mFrontier
Mon 6/178:24 pmSAN - MDW
1 stop7h 05mFrontier
Deal found 6/5$185
Fri 6/145:36 pmSTL - SAN
1 stop15h 24mMultiple Airlines
Tue 6/259:19 pmSAN - STL
1 stop13h 46mMultiple Airlines
Deal found 6/4$187
Sat 6/158:50 pmMDW - SAN
1 stop12h 55mFrontier
Mon 6/172:48 pmSAN - MDW
1 stop12h 41mFrontier
Deal found 6/5$189

One-way flights to San Diego from Illinois

Search for one-way flight options from Illinois 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 3,050,429 searches. Data last updated June 6, 2024.
If you're seeking multiple options on one-way flights from Illinois to San Diego, be sure to check out these deals, which are updated often. Users in need of a round-trip flight from Illinois to San Diego instead should update the search form at the top of page.
Tue 8/136:00 amMDW - SAN
1 stop9h 29mFrontier
Deal found 6/5$72
Tue 9/106:00 amMDW - SAN
1 stop9h 29mFrontier
Deal found 6/4$76
Wed 6/128:58 pmMDW - SAN
1 stop12h 22mFrontier
Deal found 6/5$77
Wed 8/211:48 pmSTL - SAN
1 stop19h 40mSpirit Airlines
Deal found 6/5$79
Wed 7/244:02 pmSTL - SAN
1 stop5h 58mSpirit Airlines
Deal found 6/5$80
Mon 8/264:09 pmMDW - SAN
1 stop29h 12mFrontier
Deal found 6/5$81
Thu 9/56:00 amMDW - SAN
1 stop16h 10mFrontier
Deal found 6/5$84
Mon 6/242:41 pmSTL - SAN
2 stops25h 49mSpirit Airlines
Deal found 6/4$88
Mon 6/242:41 pmSTL - SAN
1 stop11h 14mSpirit Airlines
Deal found 6/5$89

Find flights from Illinois to San Diego within your budget

Customize your flight search to find flights from Illinois 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 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$115 - $259

Route

Depart

Return

Price

Chicago O'Hare IntlSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 8/20

1 stop13h 14m

San Diego

Tue 8/27

1 stop13h 33m

$115

Chicago O'Hare IntlSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 8/21

1 stop13h 14m

San Diego

Tue 8/27

1 stop13h 33m

$124

Chicago MidwaySan Diego

MDW - SAN

MDWSAN

Chicago Midway

Tue 9/10

1 stop9h 29m

San Diego

Sun 9/15

1 stop10h 31m

$132

Chicago O'Hare IntlSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 9/10

1 stop7h 29m

San Diego

Sat 9/14

1 stop6h 06m

$132

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Mon 8/12

1 stop10h 33m

San Diego

Mon 8/26

1 stop11h 37m

$135

Chicago O'Hare IntlSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 8/21

1 stop13h 14m

San Diego

Mon 8/26

1 stop13h 33m

$137

Chicago O'Hare IntlSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 8/20

1 stop14h 40m

San Diego

Mon 8/26

1 stop13h 33m

$157

Lambert-St LouisSan Diego

STL - SAN

STLSAN

Lambert-St Louis

Sun 6/30

1 stop8h 29m

San Diego

Thu 7/11

1 stop5h 41m

$246

Greater PeoriaSan Diego

PIA - SAN

PIASAN

Greater Peoria

Wed 9/11

1 stop7h 00m

San Diego

Mon 9/16

1 stop8h 43m

$259

Flights are sorted by cheapest first

Deals found on 6/5

No data available for this route at this time. Please check back soon.

Best time to book a flight from Illinois to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 June 6, 2024.
To help decide which airline to fly from Illinois to San Diego, see what other customers have to say about Spirit Airlines, Frontier and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,918 reviews
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,222 reviews
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,368 reviews
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

WestJet
7.5
Good
2,856 reviews
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,696 reviews
Southwest
8.2
Very good
5,918 reviews

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Crew

8.7

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 airport do you fly into for flights to San Diego from Illinois?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Illinois. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • Can I find flights from Illinois to San Diego for under $200 on Cheapflights?

    Yes, there are multiple flights from Illinois to San Diego for under $200. The cheapest flight booked recently is on Spirit Airlines for just $115, but on average you can expect to pay $137.

  • Are there nonstop flights from Illinois to San Diego for under $400 on Cheapflights?

    Cheapflights has at least 20 direct flights from Illinois to San Diego under $400. A good price for a nonstop flight from Illinois to San Diego is less than $360.

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

    There are currently 20+ open flights from Illinois to San Diego within the next 7 days for less than $200.

  • What days are nonstop flights available from Illinois to San Diego?

    Nonstop flights are available for this route on the following days: Thursday, Saturday.

  • How many flights depart from Illinois to San Diego on average per day?

    On average, you can expect to see 4 flights from Illinois to San Diego a day.
    Morning (6am - Noon) - 50% of flight departures
    Evening (6pm - Midnight) - 50% of flight departures

  • How long is the flight from Illinois to San Diego?

    For as low as $115, Spirit Airlines can have you in San Diego from Illinois in 9h 29m. Illinois and San Diego are separated by a distance of 1729 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Illinois to San Diego?

    Most travelers choose Chicago O'Hare Intl - San Diego, Chicago Midway - San Diego or Lambert-St Louis - San Diego when deciding on the best route from Illinois to San Diego.

  • What are the most reliable airlines from Illinois to San Diego?

    Consider Japan Airlines (88%), Air Canada (77%) or Finnair (76%) when booking your flight. These represent the most reliable airlines when flying from Illinois to San Diego.

  • What are the cheapest flights from Illinois to San Diego?

    The cheapest flight price from Illinois to San Diego is $170. On average you can expect to pay $668. The most popular route, (Chicago O'Hare Intl - San Diego), can usually be booked for $115.

  • What does ORD to SAN mean?

    Chicago O'Hare Intl Airport is ORD and San Diego Airport is SAN. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI) are some additional IATA codes for airports related to your trip.

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

    The amount of baggage you can bring on your Illinois 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 Illinois to San Diego with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois 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 Illinois to San Diego that include hotel bookings?

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

  • How can I find direct flights from Illinois to San Diego?

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

  • Can I find deals for business class flights from Illinois to San Diego?

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to San Diego that allow pets onboard?

    Many airlines flying from Illinois 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 Illinois to San Diego?

    Yes, you can often find last-minute deals on Illinois 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 Illinois to San Diego flight deals updated?

    The Illinois to San Diego flight deals you see on this page were last updated on 6/6.

  • What are the most popular airlines that fly from Illinois to San Diego?

    Before booking your flight from Illinois to San Diego check out the most popular airlines for this route: American Airlines, Alaska Airlines or Delta.

  • What is the cheapest month to book a flight from Illinois to San Diego?

    Currently, October is the cheapest month in which you can book a flight from Illinois to San Diego (average of $288). Flying from Illinois to San Diego in July is currently the most expensive (average of $347). 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.

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Alternative routes for Illinois to San Diego
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Top 6 airlines flying from Illinois to San Diego

Discover the top 6 airlines that operate flights from Illinois 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 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$212FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$391FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$125Average$219FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$185Average$506FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$218Average$523FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$296Average$472FlexibilityNo cancel feeOn-time75%
Salt Lake City to Los Angeles flights
Fort Lauderdale to Las Vegas flights
Denver to Chicago flights
New York to Dubai flights
Charlotte to Chicago flights
Dallas to San Diego flights
Los Angeles to Hawaii flights
Philadelphia to Atlanta flights
Newark Airport to San Juan flights
Las Vegas to Honolulu flights
Denver to Albuquerque flights
Illinois to Sao Paulo flights

Search flights from Illinois to San Diego by cabin class

Find flights from Illinois 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 Illinois to San Diego

Find hourly flight availability from Illinois 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 June 6, 2024.
6%of flight departuresEarly morningMidnight to 6 am
21%of flight departuresMorning6 am to noon
64%of flight departuresAfternoonNoon to 6 pm
9%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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