$195+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Jun 4 — Jun 111
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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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 May 5, 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 May 5, 2026.
This Delta deal was found by Cheapflights users on 5/4. 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 5/295:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 6/11:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 5/4![Delta logo]()
$394
This Delta deal was found by Cheapflights users on 5/5. 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 6/275:05 pm
SFO
- HLN
1 stop4h 26m
Delta
Wed 7/15:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/5![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/3. 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 6/272:30 pm
SFO
- HLN
2 stops7h 01m
Delta
Tue 7/75:40 am
HLN
- SFO
2 stops8h 46m
Delta
Deal found 5/3![Delta logo]()
$431
This Delta deal was found by Cheapflights users on 5/2. 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 6/275:05 pm
SFO
- HLN
1 stop4h 26m
Delta
Mon 7/65:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/2![Delta logo]()
$442
This Delta deal was found by Cheapflights users on 5/1. 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 7/85:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 7/145:40 am
HLN
- SFO
2 stops8h 46m
Delta
Deal found 5/1![Delta logo]()
$443
This Delta deal was found by Cheapflights users on 5/3. 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 7/105:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Mon 7/1312:55 pm
HLN
- SFO
2 stops9h 54m
Delta
Deal found 5/3![Delta logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 7/73:49 pm
SFO
- HLN
2 stops23h 43m
Alaska Airlines
Wed 7/155:09 pm
HLN
- SFO
1 stop6h 46m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 5/2. 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 6/125:50 am
SFO
- HLN
1 stop5h 30m
Delta
Sun 6/215:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/2![Delta logo]()
$458
This Delta deal was found by Cheapflights users on 5/4. 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 6/2311:45 am
SFO
- HLN
2 stops9h 46m
Delta
Sun 7/55:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/4![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 5/4. 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 6/2311:45 am
SFO
- HLN
2 stops9h 46m
Delta
Mon 7/65:35 am
HLN
- SFO
2 stops11h 18m
Delta
Deal found 5/4![Delta logo]()
$468
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 May 5, 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 May 5, 2026.
This Delta deal was found by Cheapflights users on 5/4. 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 6/285:50 am
SFO
- HLN
1 stop5h 30m
Delta
Tue 7/75:40 am
HLN
- SFO
1 stop4h 11m
Delta
Deal found 5/4![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/5. 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 6/275:05 pm
SFO
- HLN
1 stop4h 26m
Delta
Wed 7/15:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/5![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/4. 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 6/285:50 am
SFO
- HLN
1 stop5h 30m
Delta
Sun 7/55:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/4![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/1. 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 7/75:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Tue 7/145:40 am
HLN
- SFO
1 stop4h 11m
Delta
Deal found 5/1![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/5. 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 6/235:50 am
SFO
- HLN
1 stop5h 30m
Delta
Mon 6/295:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/5![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/3. 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 7/105:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Mon 7/135:40 am
HLN
- SFO
1 stop4h 11m
Delta
Deal found 5/3![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/2. 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 6/275:05 pm
SFO
- HLN
1 stop4h 26m
Delta
Sun 7/55:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/2![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/4. 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 6/225:25 pm
SFO
- HLN
1 stop4h 06m
Delta
Fri 7/1012:55 pm
HLN
- SFO
1 stop4h 17m
Delta
Deal found 5/4![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/1. 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 7/75:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Wed 7/1512:55 pm
HLN
- SFO
2 stops9h 54m
Delta
Deal found 5/1![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 5/2. 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 6/272:30 pm
SFO
- HLN
2 stops7h 01m
Delta
Mon 7/65:35 am
HLN
- SFO
2 stops11h 18m
Delta
Deal found 5/2![Delta logo]()
$431
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated May 5, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated May 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/4. 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 5/295:40 am
SFO
- HLN
1 stop5h 43m
Delta
Mon 6/11:03 pm
HLN
- SFO
2 stops7h 17m
Delta
Deal found 5/4![Delta logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 5/4. 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 5/296:01 pm
SFO
- HLN
2 stops21h 05m
Alaska Airlines
Mon 6/14:43 pm
HLN
- SFO
2 stops17h 47m
Alaska Airlines
Deal found 5/4![Alaska Airlines logo]()
$475
This Delta deal was found by Cheapflights users on 5/2. 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 6/125:50 am
SFO
- HLN
1 stop5h 30m
Delta
Sun 6/215:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/2![Delta logo]()
$458
This Delta deal was found by Cheapflights users on 5/4. 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 6/225:25 pm
SFO
- HLN
1 stop4h 06m
Delta
Wed 7/85:40 am
HLN
- SFO
2 stops11h 04m
Delta
Deal found 5/4![Delta logo]()
$443
This Delta deal was found by Cheapflights users on 5/4. 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 6/2311:45 am
SFO
- HLN
2 stops9h 46m
Delta
Sun 7/55:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/4![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 5/4. 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 6/2311:45 am
SFO
- HLN
2 stops9h 46m
Delta
Fri 7/1012:55 pm
HLN
- SFO
2 stops9h 54m
Delta
Deal found 5/4![Delta logo]()
$468
This Delta deal was found by Cheapflights users on 5/4. 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 6/2311:45 am
SFO
- HLN
2 stops9h 46m
Delta
Wed 7/85:40 am
HLN
- SFO
2 stops11h 04m
Delta
Deal found 5/4![Delta logo]()
$485
This Delta deal was found by Cheapflights users on 5/5. 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 6/275:05 pm
SFO
- HLN
1 stop4h 26m
Delta
Wed 7/15:35 am
HLN
- SFO
1 stop4h 21m
Delta
Deal found 5/5![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 5/2. 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 6/272:30 pm
SFO
- HLN
2 stops7h 01m
Delta
Mon 7/65:35 am
HLN
- SFO
2 stops11h 18m
Delta
Deal found 5/2![Delta logo]()
$431
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 May 5, 2026.
Search for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
This Delta deal was found by Cheapflights users on 5/2. 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 5/295:40 am
SFO
- HLN
1 stop5h 43m
Delta
Deal found 5/2![Delta logo]()
$195
This Delta deal was found by Cheapflights users on 5/5. 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 6/225:50 am
SFO
- HLN
1 stop5h 30m
Delta
Deal found 5/5![Delta logo]()
$211
This Alaska Airlines deal was found by Cheapflights users on 5/2. 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 5/291:56 pm
SFO
- HLN
2 stops25h 10m
Alaska Airlines
Deal found 5/2![Alaska Airlines logo]()
$254
This Alaska Airlines deal was found by Cheapflights users on 5/5. 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 7/179:59 pm
SFO
- HLN
2 stops17h 33m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 5/5. 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 6/239:20 am
SFO
- HLN
2 stops12h 11m
Delta
Deal found 5/5![Delta logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 5/4. 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 5/187:24 pm
SFO
- HLN
2 stops19h 42m
Alaska Airlines
Deal found 5/4![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 5/4. 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 5/184:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Deal found 5/4![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 5/5. 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 7/175:50 am
SFO
- HLN
1 stop5h 25m
Delta
Deal found 5/5![Delta logo]()
$330
This Alaska Airlines deal was found by Cheapflights users on 5/5. 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 6/229:43 pm
SFO
- HLN
2 stops17h 49m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 5/4. 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
Deal found 5/4![Delta logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 5/4. 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 5/227:25 pm
SFO
- HLN
2 stops19h 41m
Alaska Airlines
Deal found 5/4![Alaska Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 5/4. 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 5/214:55 pm
SFO
- HLN
1 stop4h 38m
Delta
Deal found 5/4![Delta logo]()
$398
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 May 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $394 (Delta) |
One-way from | $195 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $518 |
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 May 5, 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
Sun 6/28
5:50 am-12:20 pm
1 stop5h 30m
Helena
Tue 7/7
5:40 am-8:51 am
1 stop4h 11m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 6/27
5:05 pm-10:31 pm
1 stop4h 26m
Helena
Wed 7/1
5:35 am-8:56 am
1 stop4h 21m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sun 6/28
5:50 am-12:20 pm
1 stop5h 30m
Helena
Sun 7/5
5:35 am-8:56 am
1 stop4h 21m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 7/7
5:07 pm-10:39 pm
1 stop4h 32m
Helena
Tue 7/14
5:40 am-8:51 am
1 stop4h 11m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 6/23
5:50 am-12:20 pm
1 stop5h 30m
Helena
Mon 6/29
5:35 am-8:56 am
1 stop4h 21m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 7/10
5:07 pm-10:39 pm
1 stop4h 32m
Helena
Mon 7/13
5:40 am-8:51 am
1 stop4h 11m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 6/27
5:05 pm-10:31 pm
1 stop4h 26m
Helena
Sun 7/5
5:35 am-8:56 am
1 stop4h 21m
$421
Quickest round-trip
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 6/22
5:25 pm-10:31 pm
1 stop4h 06m
Helena
Fri 7/10
12:55 pm-4:12 pm
1 stop4h 17m
$421
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 7/7
5:07 pm-10:39 pm
1 stop4h 32m
Helena
Wed 7/15
12:55 pm-9:49 pm
2 stops9h 54m
$426
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 6/27
2:30 pm-10:31 pm
2 stops7h 01m
Helena
Mon 7/6
5:35 am-3:53 pm
2 stops11h 18m
$431
Showing 1-10 of 21 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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.
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 May 5, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines 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.
Boarding
8.1
Crew
8.5
Food
7.1
Overall
7.9
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Food
7.1
Overall
7.9
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$291 | Average$511 | FlexibilityNo cancel fee | On-time75% |