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Cheap flights from Helena to San Diego (HLN - SAN) from $184

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 5/28. 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.
HLN — SAN
May 4 — May 111
From?
To?
Sat 5/4
Sat 5/11
1 adult, Economy
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The best prices from Helena to San Diego are usually found in January or February, booked 83 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Helena to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) 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 April 29, 2024.

Popular in

May

Cheapest in

January

Round-trip from

$288

One-way from

$184
High demand for flights, 29% potential price rise
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Best time to find cheap flights, 20% potential price drop
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From Helena to San Diego
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One-way flight from Helena to San Diego
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What is the cheapest day to fly round-trip from Helena to San Diego?

Wednesday flights are found to be more expensive to fly from Helena to San Diego. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Diego.

How far in advance should I book a flight from Helena to San Diego?

Users have found that booking a flight from Helena to San Diego at least 46 days early can save you up to 164% on average compared to booking a flight this week. If booking 46 days before your flight isn’t an option for you, users have found flights from Helena to San Diego for as little as $646 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $816 for flights departing within the next 3 days.

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

January is one of the best times of the year to fly to San Diego from Helena. Prices for January average $510 per person but you can even find prices for as low as $322. The most expensive prices can be found in the month of May. Opting for a January flight can save you 40% on your journey compared to booking in May

When is the cheapest time to fly from Helena to San Diego (HLN - SAN)?

When flying from Helena to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 30% versus a flight at noon.

Cheap Delta flights from Helena to San Diego

Explore cheap flight options specifically provided by Delta for the route between Helena 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 2,944,896 searches. Data last updated April 29, 2024.
Peruse some of the lowest-priced Delta flights we've found from Helena to San Diego. Come back soon if you're not finding the exact deal you're looking for.
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$365
Tue 5/215:50 amHLN - SAN
1 stop7h 13mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$368
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/2511:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/28$382
Thu 6/206:00 amHLN - SAN
1 stop6h 57mDelta
Tue 6/255:15 pmSAN - HLN
1 stop4h 30mDelta
Deal found 4/29$478

Cheap Alaska Airlines flights from Helena to San Diego

Explore cheap flight options specifically provided by Alaska Airlines for the route between Helena 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 2,944,896 searches. Data last updated April 29, 2024.
To aid your search, here are some of the cheapest Alaska Airlines flights we've found from Helena to San Diego. Deals are refreshing constantly so come back soon for more options.
Tue 5/283:01 pmHLN - SAN
1 stop5h 44mAlaska Airlines
Tue 6/46:15 amSAN - HLN
1 stop16h 44mAlaska Airlines
Deal found 4/28$360
Tue 5/287:00 amHLN - SAN
2 stops30h 59mAlaska Airlines
Tue 6/42:14 pmSAN - HLN
2 stops23h 09mAlaska Airlines
Deal found 4/28$387
Tue 5/287:00 amHLN - SAN
2 stops10h 03mAlaska Airlines
Sun 6/26:15 amSAN - HLN
1 stop7h 08mAlaska Airlines
Deal found 4/28$436
Sun 6/97:00 amHLN - SAN
1 stop26h 47mAlaska Airlines
Sat 6/158:50 pmSAN - HLN
1 stop26h 09mAlaska Airlines
Deal found 4/28$457
Thu 8/297:04 amHLN - SAN
1 stop5h 56mAlaska Airlines
Tue 9/38:55 pmSAN - HLN
2 stops17h 06mAlaska Airlines
Deal found 4/28$459
Thu 8/297:04 amHLN - SAN
2 stops17h 06mAlaska Airlines
Tue 9/38:55 pmSAN - HLN
2 stops17h 06mAlaska Airlines
Deal found 4/28$464
Fri 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
Wed 8/141:00 pmSAN - HLN
2 stops9h 59mAlaska Airlines
Deal found 4/28$472
Thu 6/207:00 amHLN - SAN
1 stop15h 49mAlaska Airlines
Tue 6/258:01 amSAN - HLN
2 stops14h 58mAlaska Airlines
Deal found 4/28$479
Wed 8/73:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
Wed 8/148:50 pmSAN - HLN
1 stop26h 09mAlaska Airlines
Deal found 4/28$480

Cheap Helena to San Diego flights in April & May 2024

Find cheap flight options from Helena to San Diego specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Prices were last updated on April 29, 2024.
These are some of the most attractive deals on flights from Helena to San Diego in 2024. Check back soon for alternative fares.
Tue 5/283:01 pmHLN - SAN
1 stop5h 44mAlaska Airlines
Tue 6/46:15 amSAN - HLN
1 stop16h 44mAlaska Airlines
Deal found 4/28$360
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$365
Tue 5/215:50 amHLN - SAN
1 stop7h 13mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$368
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/2511:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/28$382
Tue 5/287:00 amHLN - SAN
2 stops30h 59mAlaska Airlines
Tue 6/42:14 pmSAN - HLN
2 stops23h 09mAlaska Airlines
Deal found 4/28$387
Tue 5/287:00 amHLN - SAN
2 stops10h 03mAlaska Airlines
Sun 6/26:15 amSAN - HLN
1 stop7h 08mAlaska Airlines
Deal found 4/28$436
Tue 5/282:15 pmHLN - SAN
2 stops21h 10mUnited Airlines
Sun 6/28:35 pmSAN - HLN
2 stops16h 04mUnited Airlines
Deal found 4/28$656

Helena to San Diego 2024 flight deals

Discover exclusive flight deals for travel between Helena and San Diego in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,944,896 searches. Data last updated April 29, 2024.
These are some of the most attractive deals on flights from Helena to San Diego in 2024. Check back soon for alternative fares.
Tue 5/283:01 pmHLN - SAN
1 stop5h 44mAlaska Airlines
Tue 6/46:15 amSAN - HLN
1 stop16h 44mAlaska Airlines
Deal found 4/28$360
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$365
Tue 5/215:50 amHLN - SAN
1 stop7h 13mDelta
Sat 5/255:16 pmSAN - HLN
1 stop4h 16mDelta
Deal found 4/28$368
Tue 5/211:24 pmHLN - SAN
2 stops21h 47mDelta
Sat 5/2511:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/28$382
Tue 5/287:00 amHLN - SAN
2 stops30h 59mAlaska Airlines
Tue 6/42:14 pmSAN - HLN
2 stops23h 09mAlaska Airlines
Deal found 4/28$387
Tue 5/287:00 amHLN - SAN
2 stops10h 03mAlaska Airlines
Sun 6/26:15 amSAN - HLN
1 stop7h 08mAlaska Airlines
Deal found 4/28$436
Sun 6/97:00 amHLN - SAN
1 stop26h 47mAlaska Airlines
Sat 6/158:50 pmSAN - HLN
1 stop26h 09mAlaska Airlines
Deal found 4/28$457
Thu 8/297:04 amHLN - SAN
1 stop5h 56mAlaska Airlines
Tue 9/38:55 pmSAN - HLN
2 stops17h 06mAlaska Airlines
Deal found 4/28$459
Thu 8/297:04 amHLN - SAN
2 stops17h 06mAlaska Airlines
Tue 9/38:55 pmSAN - HLN
2 stops17h 06mAlaska Airlines
Deal found 4/28$464

One-way flights to San Diego from Helena

Search for one-way flight options from Helena 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 2,944,896 searches. Data last updated April 29, 2024.
Take a look at some of the best available options we've come across on one-way flights from Helena to San Diego. Users needing a return flight from Helena to San Diego should utilize the search form above.
Tue 5/285:50 amHLN - SAN
1 stop4h 14mDelta
Deal found 4/28$184
Tue 5/287:00 amHLN - SAN
2 stops30h 59mAlaska Airlines
Deal found 4/28$282
Sun 6/237:00 amHLN - SAN
1 stop17h 59mAlaska Airlines
Deal found 4/27$307
Sun 6/237:00 amHLN - SAN
2 stops30h 43mAlaska Airlines
Deal found 4/27$313
Sat 5/42:20 pmHLN - SAN
1 stop7h 47mUnited Airlines
Deal found 4/28$579
Sat 5/46:50 amHLN - SAN
2 stops17h 07mUnited Airlines
Deal found 4/28$584
Tue 5/286:53 amHLN - SAN
3 stops13h 57mUnited Airlines
Deal found 4/28$659
Sun 6/236:53 amHLN - SAN
3 stops14h 03mUnited Airlines
Deal found 4/27$1,490

Find flights from Helena to San Diego within your budget

Customize your flight search to find flights from Helena 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 2,944,896 searches. Data last updated April 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$360 - $656

Route

Depart

Return

Price

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/28

1 stop5h 44m

San Diego

Tue 6/4

1 stop16h 44m

$360

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/21

2 stops21h 47m

San Diego

Sat 5/25

1 stop4h 16m

$365

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/21

1 stop7h 13m

San Diego

Sat 5/25

1 stop4h 16m

$368

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/21

2 stops21h 47m

San Diego

Sat 5/25

2 stops10h 26m

$382

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/28

2 stops30h 59m

San Diego

Tue 6/4

2 stops23h 09m

$387

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/28

2 stops10h 03m

San Diego

Sun 6/2

1 stop7h 08m

$436

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Sun 6/9

1 stop26h 47m

San Diego

Sat 6/15

1 stop26h 09m

$457

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Thu 6/20

1 stop6h 57m

San Diego

Tue 6/25

1 stop4h 30m

$478

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 5/28

2 stops21h 10m

San Diego

Sun 6/2

2 stops16h 04m

$656

Flights are sorted by cheapest first

Deals found on 4/28

When is the best time to book a flight from Helena to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Helena to San Diego. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from Helena to San Diego, you should look to book at least 77 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 Helena to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Helena 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 Helena to San Diego flight should consider departing on Friday at noon when fares are most often at their lowest. Thursday 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 Helena to San Diego by taking into account the cheapest months to travel. The average price of a one-way flight from Helena to San Diego is currently $550 while a round-trip flight costs $432. Price data was last updated on April 28, 2024.

Currently, October is the cheapest month in which you can book a flight from Helena to San Diego (average of $288). Flying from Helena 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 April 29, 2024.
To help decide which airline to fly from Helena to San Diego, see what other customers have to say about Delta and Alaska Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Comfort

7.9

Crew

8.6

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
9,116 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Comfort

7.9

Crew

8.6

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
10,913 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Comfort

7.9

Crew

8.6

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
11,202 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Comfort

7.9

Crew

8.6

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 Helena to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Helena to San Diego for under $400 on Cheapflights?

    Yes, there are multiple flights from Helena to San Diego for under $400. The cheapest flight booked recently is on Alaska Airlines for just $360, but on average you can expect to pay $454.

  • What are the cheapest airlines flying from Helena to San Diego round-trip?

    Our cheapest airline available from Helena to San Diego is Alaska Airlines. Our recent data shows that you can find tickets from as low as $360 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $365 and $656 round-trip. Alaska Airlines is currently priced 29% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Helena to San Diego one-way?

    One-way options have recently been found by users for as low as $184 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $282 and United Airlines from $579 one-way.

  • What does HLN to SAN mean?

    Helena Airport is HLN 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.

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

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

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

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

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

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

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

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

    Many airlines flying from Helena 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 Helena to San Diego?

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

    The Helena to San Diego flight deals you see on this page were last updated on 4/28.

See more FAQs

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Top 2 airlines flying from Helena to San Diego

Discover the top 2 airlines that operate flights from Helena 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 2,944,896 searches. Data last updated April 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$222Average$390FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$308Average$537FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
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Search flights from Helena to San Diego by cabin class

Find flights from Helena to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Can Cheapflights find flights from Helena to San Diego with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Helena to San Diego flexibly with Cheapflights today.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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