HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$120+ Cheap flights from San Francisco to Helena (SFO - 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco 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 Francisco to Helena

Cheapest flights from San Francisco to Helena
Explore the most affordable flight options available from San Francisco to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Delta deal was found by Cheapflights users on 12/22. 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.
Tue 12/234:55 pmSFO - HLN
1 stop4h 35mDelta
Tue 12/301:11 pmHLN - SFO
1 stop6h 10mDelta
Deal found 12/22$888
This United Airlines deal was found by Cheapflights users on 12/23. 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.
Tue 12/232:29 pmSFO - HLN
1 stop6h 02mUnited Airlines
Mon 12/292:26 pmHLN - SFO
2 stops19h 17mUnited Airlines
Deal found 12/23$968
This United Airlines deal was found by Cheapflights users on 12/22. 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.
Tue 12/239:30 pmSFO - HLN
2 stops23h 01mUnited Airlines
Tue 12/306:10 amHLN - SFO
2 stops13h 59mUnited Airlines
Deal found 12/22$1,029

Find flight deals from San Francisco to Helena

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$238
(Alaska Airlines)

One-way from

$120
(Delta)

Popular in

March

Cheapest in

October

Average price

$847
Provider with most accurate pricing for San Francisco-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Helena flights.
Search Deals
From San Francisco to Helena
Search Deals
One-way flight from San Francisco to Helena
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($200 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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 December 23, 2025.
Use the filters below to find and compare flights from San Francisco to Helena that are best for you.

Fly from

San Francisco

Fly to

Helena

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 1/13

12:00 pm-6:11 pm

1 stop5h 11m

Helena

Tue 2/3

6:48 pm-11:03 pm

1 stop5h 15m

$238

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 2/10

12:00 pm-6:11 pm

1 stop5h 11m

Helena

Sat 2/14

4:36 pm-10:56 pm

1 stop7h 20m

$284

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sun 3/15

5:40 am-12:19 pm

1 stop5h 39m

Helena

Wed 3/18

12:59 pm-4:10 pm

1 stop4h 11m

$304

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 2/21

6:30 am-3:59 pm

1 stop8h 29m

Helena

Wed 2/25

4:36 pm-9:55 pm

1 stop6h 19m

$310

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Thu 3/5

8:42 am-3:59 pm

1 stop6h 17m

Helena

Mon 3/9

4:36 pm-12:49 pm

2 stops21h 13m

$311

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Thu 1/8

7:00 am-6:11 pm

1 stop10h 11m

Helena

Wed 1/14

6:48 pm-11:03 pm

1 stop5h 15m

$398

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 1/13

5:45 am-12:27 pm

1 stop5h 42m

$120

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 1/13

7:57 am-6:11 pm

2 stops9h 14m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Compare providers for flights from San Francisco 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 Francisco to Helena in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Francisco-Helena flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Helena flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-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 Francisco-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 Francisco to Helena

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

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

Currently, August is the cheapest month in which you can book a flight from San Francisco to Helena (average of $44). Flying from San Francisco to Helena in December is currently the most expensive (average of $228). 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.

What is the cheapest time of day to fly from SFO to HLN?

Find hourly flight availability from San Francisco to Helena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

One of the essential ways to save on airfare from San Francisco to Helena is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 59% on airfare.

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 December 23, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines and Delta from San Francisco to Helena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,513 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,015 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

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

  • How long is the flight from San Francisco to Helena?

    Alaska Airlines and Delta can get you from San Francisco to Helena in just under 5h 11m. Your travel time can differ by up to 28m. There are 816 mi between San Francisco and Helena. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from San Francisco to Helena round-trip from $215. Another airline that can offer you cheap pricing is Alaska Airlines. Delta is 64% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 Francisco to Helena?

    Currently, August is the cheapest month in which you can book a flight from San Francisco to Helena (average of $44). Flying from San Francisco to Helena in December is currently the most expensive (average of $228). 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 Francisco to Helena

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

Top 2 airlines flying from San Francisco to Helena

Discover the top 2 airlines that operate flights from San Francisco 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$215Average$420FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$317Average$522FlexibilityNo cancel feeOn-time75%

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.