$126+ Cheap flights from Helena to San Francisco (HLN - SFO)
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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SFO
Mar 15 — Mar 221
1 adult, Economy
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Find cheap flights from Helena to San Francisco 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 Helena to San Francisco
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Best
Last-minute
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Cheapest flights from Helena to San FranciscoExplore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 8/54:59 pm
HLN
- SFO
1 stop7h 56m
Alaska Airlines
Sun 8/98:00 am
SFO
- HLN
1 stop7h 22m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 5/46:22 pm
HLN
- SFO
1 stop6h 22m
Alaska Airlines
Thu 5/79:10 pm
SFO
- HLN
1 stop19h 35m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$369
This Expedia deal was found by Cheapflights users on 2/12. 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 4/96:22 pm
HLN
- SFO
1 stop6h 37m
Alaska Airlines
Fri 4/107:59 pm
SFO
- HLN
2 stops20h 46m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$406
This Expedia deal was found by Cheapflights users on 2/12. 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 4/96:22 pm
HLN
- SFO
1 stop6h 37m
Alaska Airlines
Sat 4/116:56 pm
SFO
- HLN
2 stops21h 49m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$446
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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 2/254:36 pm
HLN
- SFO
2 stops15h 55m
Alaska Airlines
Sat 2/287:28 pm
SFO
- HLN
1 stop19h 31m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 2/264:36 pm
HLN
- SFO
2 stops8h 17m
Alaska Airlines
Mon 3/25:20 pm
SFO
- HLN
2 stops21h 39m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$485
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 2/254:36 pm
HLN
- SFO
2 stops17h 10m
Alaska Airlines
Sun 3/14:11 pm
SFO
- HLN
2 stops22h 48m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$490
Best flights from Helena to San FranciscoDiscover carefully curated flight deals from Helena to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Helena to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Travelocity deal was found by Cheapflights users on 2/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:59 pm
HLN
- SFO
1 stop7h 56m
Alaska Airlines
Sun 8/98:00 am
SFO
- HLN
1 stop7h 22m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 5/46:22 pm
HLN
- SFO
1 stop6h 22m
Alaska Airlines
Thu 5/79:10 pm
SFO
- HLN
1 stop19h 35m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$369
This Expedia deal was found by Cheapflights users on 2/12. 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 4/96:22 pm
HLN
- SFO
1 stop6h 37m
Alaska Airlines
Fri 4/107:59 pm
SFO
- HLN
2 stops20h 46m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$406
This Expedia deal was found by Cheapflights users on 2/12. 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 4/96:22 pm
HLN
- SFO
1 stop6h 37m
Alaska Airlines
Sat 4/116:56 pm
SFO
- HLN
2 stops21h 49m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$446
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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 2/254:36 pm
HLN
- SFO
2 stops15h 55m
Alaska Airlines
Sat 2/287:28 pm
SFO
- HLN
1 stop19h 31m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 2/254:36 pm
HLN
- SFO
2 stops17h 10m
Alaska Airlines
Sun 3/14:11 pm
SFO
- HLN
2 stops22h 48m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$490
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 2/274:36 pm
HLN
- SFO
2 stops17h 10m
Alaska Airlines
Tue 3/39:32 pm
SFO
- HLN
2 stops17h 27m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$494
Last-minute flights from Helena to San FranciscoDiscover last-minute flight deals from Helena to San Francisco. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Helena to San Francisco. Data last updated February 13, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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 2/254:36 pm
HLN
- SFO
2 stops15h 55m
Alaska Airlines
Sat 2/287:28 pm
SFO
- HLN
1 stop19h 31m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 2/254:36 pm
HLN
- SFO
2 stops17h 10m
Alaska Airlines
Sun 3/14:11 pm
SFO
- HLN
2 stops22h 48m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 2/9. 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 2/252:25 pm
HLN
- SFO
1 stop8h 13m
United Airlines
Sun 3/15:10 am
SFO
- HLN
1 stop7h 30m
United Airlines
Deal found 2/9![United Airlines logo]()
$559
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 2/264:36 pm
HLN
- SFO
2 stops8h 17m
Alaska Airlines
Mon 3/25:20 pm
SFO
- HLN
2 stops21h 39m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$485
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 2/274:36 pm
HLN
- SFO
2 stops17h 10m
Alaska Airlines
Tue 3/39:32 pm
SFO
- HLN
2 stops17h 27m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$494
One-way flights from Helena to San FranciscoSearch for one-way flight options from Helena to San Francisco. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Helena to San Francisco. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
This Delta deal was found by Cheapflights users on 2/11. 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 3/185:30 am
HLN
- SFO
1 stop4h 26m
Delta
Deal found 2/11![Delta logo]()
$126
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 3/186:22 pm
HLN
- SFO
2 stops16h 55m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:22 pm
HLN
- SFO
3 stops38h 36m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$428
Find flight deals from Helena to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to San Francisco (SFO). 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 February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $361 (Alaska Airlines) |
One-way from | $126 (Delta) |
Popular in | July |
Cheapest in | December |
Average price | $373 |
Cheapflights Fare Finder
Customize your flight search to find flights from Helena to San Francisco 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 February 13, 2026.
Use the filters below to find and compare flights from Helena to San Francisco that are best for you.
Fly from
Helena
Fly to
San Francisco
Route
Depart
Return
Price
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Wed 8/5
4:59 pm-11:55 pm
1 stop7h 56m
San Francisco
Sun 8/9
8:00 am-4:22 pm
1 stop7h 22m
$361
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Mon 5/4
6:22 pm-11:44 pm
1 stop6h 22m
San Francisco
Thu 5/7
9:10 pm-5:45 pm
1 stop19h 35m
$369
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Thu 4/9
6:22 pm-11:59 pm
1 stop6h 37m
San Francisco
Fri 4/10
7:59 pm-5:45 pm
2 stops20h 46m
$406
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Thu 4/9
6:22 pm-11:59 pm
1 stop6h 37m
San Francisco
Sat 4/11
6:56 pm-5:45 pm
2 stops21h 49m
$446
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Wed 2/25
4:36 pm-7:31 am
2 stops15h 55m
San Francisco
Sat 2/28
7:28 pm-3:59 pm
1 stop19h 31m
$484
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Wed 2/25
4:36 pm-8:46 am
2 stops17h 10m
San Francisco
Sun 3/1
4:11 pm-3:59 pm
2 stops22h 48m
$490
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Fri 2/27
4:36 pm-8:46 am
2 stops17h 10m
San Francisco
Tue 3/3
9:32 pm-3:59 pm
2 stops17h 27m
$494
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Wed 3/18
5:30 am-8:56 am
1 stop4h 26m
$126
HelenaSan Francisco
HLN - SFO
HLNSFO
Helena
Wed 3/18
6:22 pm-10:17 am
2 stops16h 55m
$196
Compare providers for flights from Helena to San Francisco
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 Helena to San Francisco in February.
| 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 Helena-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Helena-San Francisco 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 Helena-San Francisco 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 Helena to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Helena with our price prediction graph.
HLN-SFO
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 Helena to San Francisco
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated February 13, 2026.
Peruse reviews from past customers who have flown with Delta from Helena to San Francisco 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.
Overall
7.9
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.9
Boarding
8.1
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Helena to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSanta Cruz
South San Francisco
Santa Clara
Roseville
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Redwood City
Rancho Cordova
San Lorenzo
Davis
Hollister
Manteca
Union City
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Helena and San Francisco flights
Browse other Helena and San Francisco flight options. Last updated on February 13, 2026.
Other flights from Helena
Browse through other flights departing from Helena. Flights are based on user searches made on Cheapflights and were last updated on February 13, 2026.
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Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 13, 2026.
Top airline flying from Helena to San Francisco
Discover the top airline that operate flights from Helena to San Francisco. 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 February 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$238 | Average$288 | FlexibilityNo cancel fee | On-timeN/A |