$198+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Aug 18 — Aug 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
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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
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Best
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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 July 19, 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 July 19, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Wed 10/216:00 am
SFO
- HLN
1 stop9h 11m
Alaska Airlines
Sat 10/244:48 pm
HLN
- SFO
1 stop7h 56m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 7/17. 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.
Wed 9/25:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Tue 9/87:15 am
HLN
- SFO
1 stop6h 03m
Delta
Deal found 7/17![Delta logo]()
$355
This Delta deal was found by Cheapflights users on 7/17. 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.
Fri 8/215:50 am
SFO
- HLN
1 stop5h 25m
Delta
Mon 8/245:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/17![Delta logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 9/118:53 pm
SFO
- HLN
1 stop18h 48m
Alaska Airlines
Mon 9/145:18 pm
HLN
- SFO
1 stop23h 38m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$468
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 8/1112:55 pm
HLN
- SFO
1 stop4h 18m
Delta
Deal found 7/16![Delta logo]()
$471
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 July 19, 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 July 19, 2026.
This Delta deal was found by Cheapflights users on 7/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:50 am
SFO
- HLN
1 stop5h 25m
Delta
Sun 8/235:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/18![Delta logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 8/216:00 am
SFO
- HLN
1 stop9h 55m
Alaska Airlines
Mon 8/245:11 pm
HLN
- SFO
2 stops23h 48m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$591
This United Airlines deal was found by Cheapflights users on 7/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:55 pm
SFO
- HLN
2 stops25h 35m
United Airlines
Sun 8/236:15 am
HLN
- SFO
1 stop6h 08m
United Airlines
Deal found 7/15![United Airlines logo]()
$666
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 8/1112:55 pm
HLN
- SFO
2 stops12h 04m
Delta
Deal found 7/16![Delta logo]()
$508
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:54 am
SFO
- HLN
2 stops9h 36m
Delta
Sat 8/812:55 pm
HLN
- SFO
2 stops7h 48m
Delta
Deal found 7/16![Delta logo]()
$545
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 8/76:03 am
SFO
- HLN
1 stop9h 29m
Alaska Airlines
Sat 8/85:09 pm
HLN
- SFO
1 stop6h 28m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$670
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:15 am
SFO
- HLN
1 stop6h 18m
United Airlines
Tue 8/46:15 am
HLN
- SFO
1 stop7h 49m
United Airlines
Deal found 7/16![United Airlines logo]()
$715
This Expedia deal was found by Cheapflights users on 7/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/309:59 pm
SFO
- HLN
2 stops17h 33m
Alaska Airlines
Mon 8/35:09 pm
HLN
- SFO
2 stops19h 40m
Alaska Airlines
Deal found 7/14![Alaska Airlines logo]()
$798
This Delta deal was found by Cheapflights users on 7/14. 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.
Thu 7/305:50 am
SFO
- HLN
1 stop5h 25m
Delta
Mon 8/312:55 pm
HLN
- SFO
2 stops9h 24m
Delta
Deal found 7/14![Delta logo]()
$741
This Alaska Airlines deal was found by Cheapflights users on 7/17. 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 8/16:03 am
SFO
- HLN
1 stop9h 29m
Alaska Airlines
Sun 8/95:09 pm
HLN
- SFO
1 stop6h 46m
Alaska Airlines
Deal found 7/17![Alaska Airlines logo]()
$828
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated July 19, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated July 19, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Sat 8/812:55 pm
HLN
- SFO
2 stops7h 48m
Delta
Deal found 7/16![Delta logo]()
$540
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 8/1112:55 pm
HLN
- SFO
1 stop4h 18m
Delta
Deal found 7/16![Delta logo]()
$471
This Delta deal was found by Cheapflights users on 7/17. 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.
Fri 8/215:50 am
SFO
- HLN
1 stop5h 25m
Delta
Mon 8/245:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/17![Delta logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 8/216:00 am
SFO
- HLN
1 stop9h 55m
Alaska Airlines
Mon 8/245:11 pm
HLN
- SFO
1 stop20h 45m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$533
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:15 am
SFO
- HLN
1 stop6h 30m
United Airlines
Sun 8/236:15 am
HLN
- SFO
1 stop6h 08m
United Airlines
Deal found 7/16![United Airlines logo]()
$555
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 July 19, 2026.
Search for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated July 19, 2026.
This Delta deal was found by Cheapflights users on 7/17. 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.
Fri 9/255:45 am
SFO
- HLN
1 stop5h 32m
Delta
Deal found 7/17![Delta logo]()
$198
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:00 am
SFO
- HLN
1 stop5h 24m
Delta
Deal found 7/15![Delta logo]()
$236
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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 12/108:00 am
SFO
- HLN
2 stops6h 31m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$276
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:15 am
SFO
- HLN
1 stop6h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$278
This Expedia deal was found by Cheapflights users on 7/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:57 pm
SFO
- HLN
2 stops18h 44m
Alaska Airlines
Deal found 7/17![Alaska Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Deal found 7/15![Delta logo]()
$300
This United Airlines deal was found by Cheapflights users on 7/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:23 pm
SFO
- HLN
2 stops15h 10m
United Airlines
Deal found 7/15![United Airlines logo]()
$322
This United Airlines deal was found by Cheapflights users on 7/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:00 am
SFO
- HLN
1 stop7h 33m
United Airlines
Deal found 7/15![United Airlines logo]()
$358
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 July 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $323 (Alaska Airlines) |
One-way from | $198 (Delta) |
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 July 19, 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
Quickest round-trip
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/21
5:50 am-12:15 pm
1 stop5h 25m
Helena
Sun 8/23
5:40 am-8:50 am
1 stop4h 10m
$445
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sun 8/9
5:50 am-12:15 pm
1 stop5h 25m
Helena
Tue 8/11
12:55 pm-11:59 pm
2 stops12h 04m
$508
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/7
11:54 am-10:30 pm
2 stops9h 36m
Helena
Sat 8/8
12:55 pm-7:43 pm
2 stops7h 48m
$545
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/21
6:00 am-4:55 pm
1 stop9h 55m
Helena
Mon 8/24
5:11 pm-3:59 pm
2 stops23h 48m
$591
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/21
6:55 pm-9:30 pm
2 stops25h 35m
Helena
Sun 8/23
6:15 am-11:23 am
1 stop6h 08m
$666
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/7
6:03 am-4:32 pm
1 stop9h 29m
Helena
Sat 8/8
5:09 pm-10:37 pm
1 stop6h 28m
$670
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 7/31
6:15 am-1:33 pm
1 stop6h 18m
Helena
Tue 8/4
6:15 am-1:04 pm
1 stop7h 49m
$715
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 7/30
5:50 am-12:15 pm
1 stop5h 25m
Helena
Mon 8/3
12:55 pm-9:19 pm
2 stops9h 24m
$741
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 7/30
9:59 pm-4:32 pm
2 stops17h 33m
Helena
Mon 8/3
5:09 pm-11:49 am
2 stops19h 40m
$798
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 8/1
6:03 am-4:32 pm
1 stop9h 29m
Helena
Sun 8/9
5:09 pm-10:55 pm
1 stop6h 46m
$828
Showing 1-10 of 15 resultsSorted 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 July.
| 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.
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.
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Complete your trip
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Alternative routes for San Francisco to Helena
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Complete your trip
Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Helena by cabin class
Find flights from San Francisco to Helena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helena
Explore flights to Helena departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 19, 2026.
San Francisco and Helena flights
Browse other San Francisco and Helena flight options. Last updated on July 19, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on July 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Francisco to Helena
Discover the top airline 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 July 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$430 | FlexibilityNo cancel fee | On-timeN/A |