$210+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
May 21 — May 281
Round-trip
1 adult, Economy
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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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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 April 21, 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 April 21, 2026.
This Delta deal was found by Cheapflights users on 4/17. 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 5/294:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Sun 5/315:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/17![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/185:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 5/251:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 4/19![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 5/235:40 am
SFO
- HLN
1 stop5h 43m
Delta
Sat 5/305:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/18![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/114:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Wed 5/131:03 pm
HLN
- SFO
2 stops9h 16m
Delta
Deal found 4/19![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 4/18. 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 6/55:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 6/81:00 pm
HLN
- SFO
2 stops9h 25m
Delta
Deal found 4/18![Delta logo]()
$399
This Expedia deal was found by Cheapflights users on 4/19. 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.
Tue 5/196:00 am
SFO
- HLN
1 stop9h 06m
Alaska Airlines
Tue 5/264:43 pm
HLN
- SFO
1 stop5h 48m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 8/310:18 am
SFO
- HLN
1 stop5h 14m
Alaska Airlines
Fri 8/75:09 pm
HLN
- SFO
1 stop6h 46m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$421
This Delta deal was found by Cheapflights users on 4/19. 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 8/195:00 pm
SFO
- HLN
1 stop4h 34m
Delta
Sat 8/2212:50 pm
HLN
- SFO
2 stops8h 29m
Delta
Deal found 4/19![Delta logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 6/48:23 am
SFO
- HLN
1 stop6h 43m
Alaska Airlines
Tue 6/94:43 pm
HLN
- SFO
1 stop7h 00m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$434
This Delta deal was found by Cheapflights users on 4/19. 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 8/26:00 am
SFO
- HLN
1 stop5h 15m
Delta
Tue 8/45:40 am
HLN
- SFO
1 stop4h 11m
Delta
Deal found 4/19![Delta logo]()
$438
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 April 21, 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 April 21, 2026.
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/185:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 5/251:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 4/19![Delta logo]()
$374
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 6/48:23 am
SFO
- HLN
1 stop6h 43m
Alaska Airlines
Tue 6/94:43 pm
HLN
- SFO
1 stop7h 00m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$434
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 5/235:40 am
SFO
- HLN
1 stop5h 43m
Delta
Sat 5/305:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/18![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/114:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Wed 5/131:03 pm
HLN
- SFO
2 stops9h 16m
Delta
Deal found 4/19![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 4/18. 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 6/55:40 am
SFO
- HLN
1 stop5h 43m
Delta
Tue 6/91:00 pm
HLN
- SFO
2 stops7h 07m
Delta
Deal found 4/18![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 4/18. 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 6/55:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 6/81:00 pm
HLN
- SFO
2 stops9h 25m
Delta
Deal found 4/18![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 4/18. 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.
Wed 6/102:30 pm
SFO
- HLN
2 stops7h 11m
Delta
Sun 6/145:25 am
HLN
- SFO
1 stop4h 31m
Delta
Deal found 4/18![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 4/17. 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.
Tue 7/75:16 pm
SFO
- HLN
1 stop4h 24m
Delta
Fri 7/1012:55 pm
HLN
- SFO
2 stops9h 22m
Delta
Deal found 4/17![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 4/19. 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 5/194:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Tue 5/261:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 4/19![Delta logo]()
$442
This Delta deal was found by Cheapflights users on 4/19. 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 6/176:00 am
SFO
- HLN
1 stop15h 41m
Delta
Tue 6/231:00 pm
HLN
- SFO
2 stops7h 07m
Delta
Deal found 4/19![Delta logo]()
$492
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated April 21, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated April 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/114:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Wed 5/131:03 pm
HLN
- SFO
2 stops9h 16m
Delta
Deal found 4/19![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 4/19. 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.
Mon 5/185:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 5/251:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 4/19![Delta logo]()
$374
This Expedia deal was found by Cheapflights users on 4/19. 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.
Tue 5/196:00 am
SFO
- HLN
1 stop9h 06m
Alaska Airlines
Tue 5/264:43 pm
HLN
- SFO
1 stop5h 48m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 4/19. 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 5/194:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Tue 5/261:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 4/19![Delta logo]()
$442
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 5/235:40 am
SFO
- HLN
1 stop5h 43m
Delta
Sat 5/305:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/18![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 4/17. 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 5/294:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Sun 5/315:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/17![Delta logo]()
$369
This Expedia deal was found by Cheapflights users on 4/17. 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 5/296:00 am
SFO
- HLN
1 stop9h 06m
Alaska Airlines
Sun 5/314:43 pm
HLN
- SFO
2 stops20h 38m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$476
This Delta deal was found by Cheapflights users on 4/21. 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.
Sat 5/305:40 am
SFO
- HLN
1 stop5h 43m
Delta
Sat 6/65:45 am
HLN
- SFO
1 stop4h 08m
Delta
Deal found 4/21![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/301:56 pm
SFO
- HLN
2 stops25h 10m
Alaska Airlines
Sat 6/64:43 pm
HLN
- SFO
2 stops28h 00m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$477
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 April 21, 2026.
Search for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated April 21, 2026.
This Delta deal was found by Cheapflights users on 4/20. 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 5/145:40 am
SFO
- HLN
1 stop5h 43m
Delta
Deal found 4/20![Delta logo]()
$210
This deal was found by Cheapflights users on 4/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:18 am
SFO
- HLN
1 stop5h 14m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$211
This Delta deal was found by Cheapflights users on 4/21. 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.
Sat 6/62:43 pm
SFO
- HLN
2 stops6h 50m
Delta
Deal found 4/21![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 7/1610:18 am
SFO
- HLN
1 stop5h 14m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 4/17. 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.
Tue 5/55:40 am
SFO
- HLN
1 stop5h 44m
Delta
Deal found 4/17![Delta logo]()
$310
This Expedia deal was found by Cheapflights users on 4/21. 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 5/87:40 pm
SFO
- HLN
2 stops21h 05m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 4/20. 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.
Sat 5/92:43 pm
SFO
- HLN
2 stops6h 50m
Delta
Deal found 4/20![Delta logo]()
$315
This Delta deal was found by Cheapflights users on 4/20. 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 5/175:40 am
SFO
- HLN
1 stop5h 43m
Delta
Deal found 4/20![Delta logo]()
$320
This Delta deal was found by Cheapflights users on 4/20. 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 5/2111:55 am
SFO
- HLN
2 stops9h 38m
Delta
Deal found 4/20![Delta logo]()
$325
This Expedia deal was found by Cheapflights users on 4/17. 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.
Tue 5/57:04 am
SFO
- HLN
2 stops9h 41m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 4/21. 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 5/75:40 am
SFO
- HLN
1 stop5h 43m
Delta
Deal found 4/21![Delta logo]()
$370
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 April 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (Delta) |
One-way from | $210 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $506 |
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 April 21, 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 - HLN
SFOHLN
San Francisco
Mon 5/18
5:40 am-12:23 pm
1 stop5h 43m
Helena
Mon 5/25
1:03 pm-7:20 pm
2 stops7h 17m
$374
Quickest round-trip
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 5/23
5:40 am-12:23 pm
1 stop5h 43m
Helena
Sat 5/30
5:45 am-8:53 am
1 stop4h 08m
$384
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 5/11
4:55 pm-10:33 pm
1 stop4h 38m
Helena
Wed 5/13
1:03 pm-9:19 pm
2 stops9h 16m
$389
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 6/5
5:40 am-12:23 pm
1 stop5h 43m
Helena
Tue 6/9
1:00 pm-7:07 pm
2 stops7h 07m
$389
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 6/5
5:40 am-12:23 pm
1 stop5h 43m
Helena
Mon 6/8
1:00 pm-9:25 pm
2 stops9h 25m
$399
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Wed 6/10
2:30 pm-10:41 pm
2 stops7h 11m
Helena
Sun 6/14
5:25 am-8:56 am
1 stop4h 31m
$426
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 7/7
5:16 pm-10:40 pm
1 stop4h 24m
Helena
Fri 7/10
12:55 pm-9:17 pm
2 stops9h 22m
$426
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 6/4
8:23 am-4:06 pm
1 stop6h 43m
Helena
Tue 6/9
4:43 pm-10:43 pm
1 stop7h 00m
$434
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 5/19
4:55 pm-10:33 pm
1 stop4h 38m
Helena
Tue 5/26
1:03 pm-7:20 pm
2 stops7h 17m
$442
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Wed 6/17
6:00 am-10:41 pm
1 stop15h 41m
Helena
Tue 6/23
1:00 pm-7:07 pm
2 stops7h 07m
$492
Showing 1-10 of 20 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 April.
| 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.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Helena
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 21, 2026.
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.
Comfort
7.8
Overall
7.9
Boarding
8.1
Entertainment
7.0
Crew
8.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Overall
7.9
Boarding
8.1
Entertainment
7.0
Crew
8.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Overall
7.9
Boarding
8.1
Entertainment
7.0
Crew
8.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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Top 2 airlines flying from San Francisco to Helena
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$291 | Average$511 | FlexibilityNo cancel fee | On-time75% |