$233+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Helena with Cheapflights
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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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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 August 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 August 5, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:53 pm -
1 stop18h 48m
Tue 9/295:18 pm -
1 stop5h 21m
Deal found 8/2![Alaska Airlines logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 8/306:00 am -
1 stop9h 34m
Fri 9/45:11 pm -
1 stop27h 54m
Deal found 7/31![Alaska Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 9/212:30 pm -
2 stops6h 54m
Tue 9/2912:57 pm -
2 stops10h 24m
Deal found 8/2![Delta logo]()
$418
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:46 pm -
1 stop22h 48m
Tue 9/85:18 pm -
1 stop18h 41m
Deal found 8/1![Alaska Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 7/31. 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 8/305:50 am -
1 stop5h 25m
Fri 9/412:55 pm -
2 stops9h 24m
Deal found 7/31![Delta logo]()
$432
This Expedia deal was found by Cheapflights users on 8/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:03 am -
1 stop6h 31m
Thu 9/105:18 pm -
1 stop17h 19m
Deal found 8/4![Alaska Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 8/4. 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 9/115:19 pm -
1 stop4h 05m
Wed 9/1612:57 pm -
1 stop4h 27m
Deal found 8/4![Delta logo]()
$483
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 August 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 August 5, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 8/306:00 am -
1 stop9h 34m
Fri 9/45:11 pm -
1 stop27h 54m
Deal found 7/31![Alaska Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 9/212:30 pm -
2 stops6h 54m
Tue 9/2912:57 pm -
2 stops10h 24m
Deal found 8/2![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am -
1 stop7h 45m
Sun 8/236:15 am -
1 stop6h 08m
Deal found 8/3![United Airlines logo]()
$725
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:53 pm -
1 stop18h 48m
Tue 9/295:18 pm -
2 stops18h 35m
Deal found 8/2![Alaska Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 7/31. 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 8/305:50 am -
1 stop5h 25m
Fri 9/412:55 pm -
2 stops9h 24m
Deal found 7/31![Delta logo]()
$432
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:46 pm -
1 stop22h 48m
Tue 9/85:18 pm -
1 stop18h 41m
Deal found 8/1![Alaska Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 8/1. 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.
Sat 8/225:06 pm -
1 stop4h 24m
Sat 8/296:50 am -
2 stops10h 00m
Deal found 8/1![Delta logo]()
$506
This Delta deal was found by Cheapflights users on 8/4. 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.
Wed 9/25:50 am -
1 stop5h 25m
Thu 9/1012:57 pm -
2 stops9h 37m
Deal found 8/4![Delta logo]()
$506
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 9/101:45 pm -
1 stop25h 56m
Mon 9/145:18 pm -
1 stop7h 22m
Deal found 8/4![Alaska Airlines logo]()
$614
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:00 am -
1 stop8h 34m
Mon 9/75:11 pm -
1 stop18h 48m
Deal found 8/1![Alaska Airlines logo]()
$725
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated August 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/1. 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.
Sat 8/225:06 pm -
1 stop4h 24m
Sat 8/296:50 am -
2 stops10h 00m
Deal found 8/1![Delta logo]()
$506
This Expedia deal was found by Cheapflights users on 8/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:03 am -
1 stop6h 31m
Thu 9/105:18 pm -
1 stop17h 19m
Deal found 8/4![Alaska Airlines logo]()
$472
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:46 pm -
1 stop22h 48m
Tue 9/85:18 pm -
1 stop18h 41m
Deal found 8/1![Alaska Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 8/4. 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 9/115:19 pm -
1 stop4h 05m
Wed 9/1612:57 pm -
1 stop4h 27m
Deal found 8/4![Delta logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 9/218:53 pm -
1 stop18h 48m
Tue 9/295:18 pm -
1 stop5h 21m
Deal found 8/2![Alaska Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 9/212:30 pm -
2 stops6h 54m
Tue 9/2912:57 pm -
2 stops10h 24m
Deal found 8/2![Delta logo]()
$418
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 August 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 August 5, 2026.
This Delta deal was found by Cheapflights users on 8/4. 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 9/155:19 pm -
1 stop4h 05m
Deal found 8/4![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 8/4. 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 9/142:15 pm -
2 stops21h 02m
Deal found 8/4![Delta logo]()
$235
This Delta deal was found by Cheapflights users on 8/4. 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.
Wed 9/1611:58 am -
2 stops9h 26m
Deal found 8/4![Delta logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 12/109:15 am -
1 stop5h 16m
Deal found 8/4![Alaska Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 12/106:00 am -
1 stop5h 22m
Deal found 8/2![Delta logo]()
$251
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:00 am -
1 stop7h 45m
Deal found 8/1![United Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 8/4. 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 9/135:45 am -
1 stop5h 32m
Deal found 8/4![Delta logo]()
$300
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:40 pm -
2 stops20h 05m
Deal found 8/4![United Airlines logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Sun 8/238:57 pm -
2 stops18h 37m
Deal found 8/1![Alaska Airlines logo]()
$438
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $353 (Alaska Airlines) |
One-way from | $233 (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 August 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 8/30
6:00 am-4:34 pm
1 stop9h 34m
Helena
Fri 9/4
5:11 pm-8:05 pm
1 stop27h 54m
$383
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 9/21
8:53 pm-4:41 pm
1 stop18h 48m
Helena
Tue 9/29
5:18 pm-10:53 am
2 stops18h 35m
$386
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 9/21
2:30 pm-10:24 pm
2 stops6h 54m
Helena
Tue 9/29
12:57 pm-10:21 pm
2 stops10h 24m
$418
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 9/5
4:46 pm-4:34 pm
1 stop22h 48m
Helena
Tue 9/8
5:18 pm-10:59 am
1 stop18h 41m
$424
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sun 8/30
5:50 am-12:15 pm
1 stop5h 25m
Helena
Fri 9/4
12:55 pm-9:19 pm
2 stops9h 24m
$432
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Sat 8/22
5:06 pm-10:30 pm
1 stop4h 24m
Helena
Sat 8/29
6:50 am-3:50 pm
2 stops10h 00m
$506
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Wed 9/2
5:50 am-12:15 pm
1 stop5h 25m
Helena
Thu 9/10
12:57 pm-9:34 pm
2 stops9h 37m
$506
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 9/10
1:45 pm-4:41 pm
1 stop25h 56m
Helena
Mon 9/14
5:18 pm-11:40 pm
1 stop7h 22m
$614
Quickest round-trip
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Wed 8/19
5:00 am-1:45 pm
1 stop7h 45m
Helena
Sun 8/23
6:15 am-11:23 am
1 stop6h 08m
$725
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 9/3
7:00 am-4:34 pm
1 stop8h 34m
Helena
Mon 9/7
5:11 pm-10:59 am
1 stop18h 48m
$725
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 August.
| 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.
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 August 5, 2026.
Peruse reviews from past customers who have flown with 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.
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.
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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 August 5, 2026.
San Francisco and Helena flights
Browse other San Francisco and Helena flight options. Last updated on August 5, 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 August 5, 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 August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$474 | FlexibilityNo cancel fee | On-timeN/A |