HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$153+ Cheap flights from San Diego to Helena (SAN - HLN)

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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HLN
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Helena with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Diego to Helena

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Helena (HLN). 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 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$278
(United Airlines)

Popular in

November

Cheapest in

October
Provider with most accurate pricing for San Diego-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Helena flights.
Search Deals
From San Diego to Helena
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals

Find flight deals from San Diego to Helena

Cheapest flights from San Diego to Helena
Explore the most affordable flight options available from San Diego to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:45 amSAN - HLN
1 stop6h 17mUnited Airlines
Sat 5/316:25 amHLN - SAN
1 stop7h 21mUnited Airlines
Deal found 4/29$278
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:15 amSAN - HLN
1 stop5h 06mDelta
Wed 6/111:07 pmHLN - SAN
1 stop6h 36mDelta
Deal found 4/27$285
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/16:15 amSAN - HLN
1 stop8h 16mAlaska Airlines
Thu 6/54:11 pmHLN - SAN
1 stop7h 33mAlaska Airlines
Deal found 4/29$289
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/228:15 amSAN - HLN
1 stop6h 16mHawaiian Airlines
Wed 7/304:08 pmHLN - SAN
1 stop7h 47mHawaiian Airlines
Deal found 4/28$328

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego to Helena 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 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from San Diego to Helena that are best for you.

Fly from

San Diego

Fly to

Helena

Route

Depart

Return

Price

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Thu 5/22

6:45 am-2:02 pm

1 stop6h 17m

Helena

Sat 5/31

6:25 am-12:46 pm

1 stop7h 21m

$278

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 5/28

6:15 am-12:21 pm

1 stop5h 06m

Helena

Wed 6/11

1:07 pm-6:43 pm

1 stop6h 36m

$285

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Tue 7/22

8:15 am-3:31 pm

1 stop6h 16m

Helena

Wed 7/30

4:08 pm-10:55 pm

1 stop7h 47m

$328

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Tue 7/22

6:15 am-3:31 pm

1 stop8h 16m

Helena

Wed 7/30

4:08 pm-8:21 am

2 stops17h 13m

$370

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Fri 6/13

6:15 am-12:27 pm

1 stop5h 12m

$153

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Fri 6/13

10:38 pm-3:31 pm

2 stops15h 53m

$231

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Thu 6/12

3:25 pm-4:55 pm

3 stops24h 30m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Compare providers for flights from San Diego to Helena

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Helena in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Helena flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from San Diego 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.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Helena

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

Currently, February is the cheapest month in which you can book a flight from San Diego to Helena (average of $353). Flying from San Diego to Helena in July is currently the most expensive (average of $597). 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.

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated April 30, 2025.
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

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

    Flying on United Airlines is currently your cheapest option to Helena, with prices starting at $278. Another option worth looking into is Alaska Airlines, starting at $289 round trip. Users have found that United Airlines is 31% cheaper than the other options available to this destination.

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from San Diego to Helena (average of $353). Flying from San Diego to Helena in July is currently the most expensive (average of $597). 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.

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 San Diego to Helena

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Kalispell flights
San Francisco to Bozeman flights
San Francisco to Kalispell flights
Los Angeles to Bozeman flights
San Diego to Kalispell flights
San Francisco to Missoula flights
Ontario to Kalispell flights
San Jose to Kalispell flights
Sacramento to Bozeman flights
Los Angeles to Missoula flights
San Diego to Bozeman flights
Ontario to Bozeman flights
San Diego to Missoula flights
San Jose to Bozeman flights
San Francisco to Billings flights
Santa Ana to Kalispell flights
Santa Ana to Missoula flights
Oakland to Kalispell flights
Las Vegas to Bozeman flights
Reno to Billings flights
Santa Ana to Bozeman flights
Sacramento to Kalispell flights
Burbank to Kalispell flights
Oakland to Bozeman flights
Oakland to Missoula flights
San Jose to Billings flights
Burbank to Bozeman flights
Las Vegas to Missoula flights
San Francisco to Helena flights
Los Angeles to Great Falls flights
Medford to Kalispell flights
San Francisco to Butte flights
Reno to Bozeman flights
Ontario to Missoula flights
Los Angeles to West Yellowstone flights
San Francisco to West Yellowstone flights
Fresno to Bozeman flights
San Diego to Billings flights
San Jose to Missoula flights
Fresno to Kalispell flights
San Jose to Helena flights
Sacramento to Billings flights
Burbank to Helena flights
Los Angeles to Billings flights
Fresno to Missoula flights
Los Angeles to Helena flights
Long Beach to Bozeman flights
Santa Barbara to Bozeman flights
Palm Springs to Bozeman flights
Ontario to Helena flights

Top airline flying from San Diego to Helena

Discover the top airline that operate flights from San Diego to Helena. 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 2,558,603 searches. Data last updated April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$242Average$413FlexibilityNo cancel feeOn-timeN/A

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.