Cheap flights from Helena to San Diego (HLN - SAN) from $139

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 5/15. 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
abr. 16 — abr. 231

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 Monday 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 abril 11, 2024.

Popular in

May

Cheapest in

January

Round-trip from

$288

One-way from

$239
High demand for flights, 29% potential price rise
Best time to find cheap flights, 20% potential price drop
From Helena to San Diego
One-way flight from Helena to San Diego

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 35% versus a flight at noon.

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 3,194,136 searches. Data last updated abril 11, 2024.
Peruse some of the lowest-priced Alaska Airlines flights we've found from Helena to San Diego. Come back soon if you're not finding the exact deal you're looking for.
sáb. 5/112:56 pmHLN - SAN
1 stop6h 45mAlaska Airlines
mar. 5/146:55 pmSAN - HLN
2 stops18h 21mAlaska Airlines
Deal found 4/10$332
sáb. 5/112:56 pmHLN - SAN
2 stops41h 42mAlaska Airlines
mar. 5/149:51 pmSAN - HLN
2 stops15h 25mAlaska Airlines
Deal found 4/10$397
vie. 5/177:00 amHLN - SAN
1 stop17h 59mAlaska Airlines
dom. 5/198:00 amSAN - HLN
1 stop5h 23mAlaska Airlines
Deal found 4/11$405
vie. 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
mié. 8/146:20 amSAN - HLN
2 stops16h 39mAlaska Airlines
Deal found 4/10$457
vie. 5/173:01 pmHLN - SAN
2 stops17h 38mAlaska Airlines
dom. 5/198:00 amSAN - HLN
1 stop5h 23mAlaska Airlines
Deal found 4/11$459
vie. 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
mié. 8/141:00 pmSAN - HLN
2 stops9h 59mAlaska Airlines
Deal found 4/11$472
vie. 6/143:42 pmHLN - SAN
1 stop7h 07mAlaska Airlines
mar. 6/187:00 amSAN - HLN
1 stop7h 05mAlaska Airlines
Deal found 4/11$480
dom. 6/93:01 pmHLN - SAN
1 stop18h 46mAlaska Airlines
sáb. 6/158:01 amSAN - HLN
2 stops14h 58mAlaska Airlines
Deal found 4/10$483
jue. 6/207:00 amHLN - SAN
1 stop26h 36mAlaska Airlines
mar. 6/258:01 amSAN - HLN
2 stops14h 58mAlaska Airlines
Deal found 4/11$499

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 3,194,136 searches. Data last updated abril 11, 2024.
To aid your search, here are some of the cheapest Delta flights we've found from Helena to San Diego. Deals are refreshing constantly so come back soon for more options.
sáb. 5/115:50 amHLN - SAN
1 stop4h 14mDelta
mar. 5/146:15 amSAN - HLN
1 stop5h 28mDelta
Deal found 4/9$278
sáb. 5/115:50 amHLN - SAN
1 stop7h 13mDelta
mar. 5/1411:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/9$305
vie. 8/95:55 amHLN - SAN
1 stop4h 08mDelta
mié. 8/146:15 amSAN - HLN
1 stop5h 15mDelta
Deal found 4/10$478
dom. 6/96:00 amHLN - SAN
1 stop3h 55mDelta
sáb. 6/151:45 pmSAN - HLN
1 stop21h 50mDelta
Deal found 4/10$494

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 3,194,136 searches. Prices were last updated on abril 11, 2024.
These are some of the most attractive deals on flights from Helena to San Diego in 2024. Check back soon for alternative fares.
sáb. 5/115:50 amHLN - SAN
1 stop7h 13mDelta
mar. 5/146:15 amSAN - HLN
1 stop5h 28mDelta
Deal found 4/10$278
sáb. 5/115:50 amHLN - SAN
1 stop7h 13mDelta
mar. 5/1411:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/9$305
sáb. 5/112:56 pmHLN - SAN
1 stop6h 45mAlaska Airlines
mar. 5/146:55 pmSAN - HLN
2 stops18h 21mAlaska Airlines
Deal found 4/10$332
sáb. 5/112:56 pmHLN - SAN
2 stops41h 42mAlaska Airlines
mar. 5/149:51 pmSAN - HLN
2 stops15h 25mAlaska Airlines
Deal found 4/10$397
mar. 4/232:20 pmHLN - SAN
1 stop19h 51mUnited Airlines
mar. 4/307:00 amSAN - HLN
1 stop13h 11mUnited Airlines
Deal found 4/10$591
mar. 4/232:20 pmHLN - SAN
1 stop19h 51mUnited Airlines
mar. 4/306:20 amSAN - HLN
2 stops13h 51mUnited Airlines
Deal found 4/10$596
mar. 4/232:20 pmHLN - SAN
2 stops20h 17mUnited Airlines
mar. 4/306:20 amSAN - HLN
2 stops13h 51mUnited Airlines
Deal found 4/10$616
jue. 4/112:20 pmHLN - SAN
1 stop19h 51mUnited Airlines
jue. 4/186:49 pmSAN - HLN
1 stop17h 37mUnited Airlines
Deal found 4/10$910
jue. 4/116:50 amHLN - SAN
2 stops17h 51mUnited Airlines
jue. 4/186:49 pmSAN - HLN
1 stop17h 37mUnited Airlines
Deal found 4/10$915

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 3,194,136 searches. Data last updated abril 11, 2024.
These are some of the most attractive deals on flights from Helena to San Diego in 2024. Check back soon for alternative fares.
sáb. 5/115:50 amHLN - SAN
1 stop7h 13mDelta
mar. 5/146:15 amSAN - HLN
1 stop5h 28mDelta
Deal found 4/10$278
sáb. 5/115:50 amHLN - SAN
1 stop7h 13mDelta
mar. 5/1411:06 amSAN - HLN
2 stops10h 26mDelta
Deal found 4/9$305
sáb. 5/112:56 pmHLN - SAN
1 stop6h 45mAlaska Airlines
mar. 5/146:55 pmSAN - HLN
2 stops18h 21mAlaska Airlines
Deal found 4/10$332
sáb. 5/112:56 pmHLN - SAN
2 stops41h 42mAlaska Airlines
mar. 5/149:51 pmSAN - HLN
2 stops15h 25mAlaska Airlines
Deal found 4/10$397
vie. 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
mié. 8/146:20 amSAN - HLN
2 stops16h 39mAlaska Airlines
Deal found 4/10$457
vie. 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
mié. 8/141:00 pmSAN - HLN
2 stops9h 59mAlaska Airlines
Deal found 4/11$472
vie. 8/93:42 pmHLN - SAN
1 stop8h 07mAlaska Airlines
mié. 8/148:00 amSAN - HLN
1 stop6h 05mAlaska Airlines
Deal found 4/11$478
vie. 6/143:42 pmHLN - SAN
1 stop7h 07mAlaska Airlines
mar. 6/187:00 amSAN - HLN
1 stop7h 05mAlaska Airlines
Deal found 4/11$480
dom. 6/93:01 pmHLN - SAN
1 stop18h 46mAlaska Airlines
sáb. 6/158:01 amSAN - HLN
2 stops14h 58mAlaska Airlines
Deal found 4/10$483

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 3,194,136 searches. Data last updated abril 11, 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.
mié. 5/155:50 amHLN - SAN
1 stop4h 14mDelta
Deal found 4/9$139
mar. 9/103:44 pmHLN - SAN
2 stops21h 22mAlaska Airlines
Deal found 4/11$224
mar. 9/105:55 amHLN - SAN
1 stop7h 23mDelta
Deal found 4/11$239
sáb. 7/133:46 pmHLN - SAN
1 stop8h 03mAlaska Airlines
Deal found 4/9$241
sáb. 7/133:46 pmHLN - SAN
2 stops16h 59mAlaska Airlines
Deal found 4/9$273
mié. 5/156:50 amHLN - SAN
2 stops27h 47mUnited Airlines
Deal found 4/9$339
mié. 5/156:50 amHLN - SAN
3 stops16h 40mUnited Airlines
Deal found 4/9$1,273

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 3,194,136 searches. Data last updated abril 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$278 - $596

Route

Depart

Return

Price

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

sáb. 5/11

1 stop4h 14m

San Diego

mar. 5/14

1 stop5h 28m

$278

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

sáb. 5/11

1 stop7h 13m

San Diego

mar. 5/14

2 stops10h 26m

$305

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

sáb. 5/11

1 stop6h 45m

San Diego

mar. 5/14

2 stops18h 21m

$332

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

sáb. 5/11

2 stops41h 42m

San Diego

mar. 5/14

2 stops15h 25m

$397

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

vie. 5/17

1 stop17h 59m

San Diego

dom. 5/19

1 stop5h 23m

$405

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

vie. 8/9

1 stop8h 07m

San Diego

mié. 8/14

2 stops16h 39m

$457

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

vie. 8/9

1 stop4h 08m

San Diego

mié. 8/14

1 stop5h 15m

$478

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

mar. 4/23

1 stop19h 51m

San Diego

mar. 4/30

1 stop13h 11m

$591

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

mar. 4/23

1 stop19h 51m

San Diego

mar. 4/30

2 stops13h 51m

$596

Flights are sorted by cheapest first

Deals found on 4/9

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 7, 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 $390 while a round-trip flight costs $427. Price data was last updated on April 7, 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 $368). 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

$316

May

$320

June

$368

July

$367

August

$313

September

$298

October

$288

November

$334

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 abril 11, 2024.
To help decide which airline to fly from Helena to San Diego, see what other customers have to say about Alaska Airlines, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,065 reviews

Boarding

8.2

Entertainment

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

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.

8.1
Very good
9,065 reviews
8.1
Very good
9,065 reviews

Boarding

8.2

Entertainment

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

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.

8.1
Very good
11,206 reviews
8.1
Very good
9,065 reviews

Boarding

8.2

Entertainment

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

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.

7.4
Good
11,391 reviews
8.1
Very good
9,065 reviews

Boarding

8.2

Entertainment

7.3

Crew

8.6

Overall

8.1

Comfort

7.9

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 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 $300 on Cheapflights?

    Yes, there are multiple flights from Helena to San Diego for under $300. The cheapest flight booked recently is on Delta for just $278, but on average you can expect to pay $467.

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

    Our cheapest airline available from Helena to San Diego is Delta. Our recent data shows that you can find tickets from as low as $278 on this airline. Additional options worth looking into are Alaska Airlines and United Airlines, starting at $332 and $591 round-trip. Delta is currently priced 45% 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 $139 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $224 and United Airlines from $339 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 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 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 see available direct flights.

  • 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 do 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 4/11.

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

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 3,194,136 searches. Data last updated abril 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$222Average$314FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$305Average$537FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

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.

Fly with Cheapflights

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How does Cheapflights help users find flights from Helena to San Diego?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Diego from Helena today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Helena to San Diego?

Cheapflights simply makes it quick and affordable to book flights from Helena to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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.

Can Cheapflights notify me if prices for flights from Helena to San Diego become cheaper?

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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