$232+ Cheap flights from San Francisco to Helena (SFO - HLN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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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
Best
Last-minute
One-way
Cheapest flights from San Francisco to HelenaExplore 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 September 18, 2026.
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 September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/249:43 am -
1 stop6h 06m
Mon 10/265:26 pm -
1 stop16h 23m
Deal found 9/18![Alaska Airlines logo]()
$368
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 10/238:46 pm -
1 stop19h 03m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/249:43 am -
1 stop6h 06m
Sun 10/255:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 10/2211:00 am -
1 stop4h 49m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$462
Best flights from San Francisco to HelenaDiscover carefully curated flight deals from San Francisco to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from San Francisco to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 1/3010:25 am -
1 stop4h 58m
Tue 2/25:00 pm -
1 stop6h 56m
Deal found 9/17![Alaska Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 10/295:50 am -
1 stop5h 38m
Sun 11/17:15 am -
1 stop6h 09m
Deal found 9/17![Delta logo]()
$525
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 10/238:46 pm -
1 stop19h 03m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 1/49:26 pm -
1 stop17h 57m
Fri 1/85:00 pm -
1 stop28h 00m
Deal found 9/15![Alaska Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 9/14. 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.
Fri 10/238:58 pm -
2 stops14h 30m
Sun 10/257:15 am -
1 stop6h 09m
Deal found 9/14![Delta logo]()
$531
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 10/227:43 am -
2 stops8h 06m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$482
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated September 18, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 10/2211:00 am -
1 stop4h 49m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 10/238:46 pm -
1 stop19h 03m
Mon 10/265:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/249:43 am -
1 stop6h 06m
Mon 10/265:26 pm -
1 stop16h 23m
Deal found 9/18![Alaska Airlines logo]()
$368
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/249:43 am -
1 stop6h 06m
Sun 10/255:26 pm -
1 stop7h 26m
Deal found 9/18![Alaska Airlines logo]()
$447
One-way flights from San Francisco to HelenaSearch for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 12/109:40 am -
1 stop5h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$232
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 12/106:00 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$263
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/611:00 am -
1 stop4h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$271
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 September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $373 (Alaska Airlines) |
One-way from | $232 (Alaska Airlines) |
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 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from San Francisco to Helena that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Thu 12/10
9:40 am-4:18 pm
1 stop5h 38m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$232
Quickest round-trip
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Thu 12/10
6:00 am-12:30 pm
1 stop5h 30m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$263
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Tue 10/6
7:08 am-4:49 pm
2 stops8h 41m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$338
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Sat 1/30
10:25 am-4:23 pm
1 stop4h 58m
Helena
Tue 2/2
5:00 pm-10:56 pm
1 stop6h 56m
$373
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Fri 10/23
8:46 pm-4:49 pm
1 stop19h 03m
Helena
Mon 10/26
5:26 pm-11:52 pm
1 stop7h 26m
$393
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Mon 1/4
9:26 pm-4:23 pm
1 stop17h 57m
Helena
Fri 1/8
5:00 pm-8:00 pm
1 stop28h 00m
$415
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Thu 10/22
7:43 am-4:49 pm
2 stops8h 06m
Helena
Mon 10/26
5:26 pm-11:52 pm
1 stop7h 26m
$482
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Thu 10/29
5:50 am-12:28 pm
1 stop5h 38m
Helena
Sun 11/1
7:15 am-12:24 pm
1 stop6h 09m
$525
San FranciscoHelena
SFO San Francisco - HLN Helena
SFOHLN
San Francisco
Fri 10/23
8:58 pm-12:28 pm
2 stops14h 30m
Helena
Sun 10/25
7:15 am-12:24 pm
1 stop6h 09m
$531
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Helena flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
SFO-HLN
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.
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.
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