$191+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Aug 7 — Aug 141
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Helena with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
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 July 8, 2026.
Explore the most affordable flight options available from San Francisco to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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 10/275:42 pm
SFO
- HLN
1 stop21h 29m
Alaska Airlines
Sat 10/314:48 pm
HLN
- SFO
1 stop6h 56m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$355
This Orbitz deal was found by Cheapflights users on 7/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
SFO
- HLN
1 stop9h 41m
Alaska Airlines
Mon 9/215:18 pm
HLN
- SFO
1 stop17h 19m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 7/6. 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 8/275:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 9/15:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$420
This Delta deal was found by Cheapflights users on 7/7. 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 9/165:19 pm
SFO
- HLN
1 stop4h 05m
Delta
Mon 9/2112:57 pm
HLN
- SFO
2 stops7h 44m
Delta
Deal found 7/7![Delta logo]()
$443
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Sun 8/235:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 7/5. 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.
Wed 7/295:50 am
SFO
- HLN
1 stop5h 25m
Delta
Wed 8/55:40 am
HLN
- SFO
2 stops8h 51m
Delta
Deal found 7/5![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 July 8, 2026.
Discover carefully curated flight deals from San Francisco to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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 10/275:42 pm
SFO
- HLN
1 stop21h 29m
Alaska Airlines
Sat 10/314:48 pm
HLN
- SFO
1 stop6h 56m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 7/6. 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 8/275:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 9/15:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$420
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Sun 8/235:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 7/5. 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.
Wed 7/2911:45 am
SFO
- HLN
2 stops9h 54m
Delta
Wed 8/55:40 am
HLN
- SFO
2 stops10h 49m
Delta
Deal found 7/5![Delta logo]()
$473
This Delta deal was found by Cheapflights users on 7/5. 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 8/45:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Mon 8/1012:55 pm
HLN
- SFO
2 stops9h 24m
Delta
Deal found 7/5![Delta logo]()
$480
This Delta deal was found by Cheapflights users on 7/4. 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 9/255:45 am
SFO
- HLN
1 stop5h 32m
Delta
Sun 9/2712:57 pm
HLN
- SFO
2 stops9h 32m
Delta
Deal found 7/4![Delta logo]()
$482
Last-minute flights from San Francisco to HelenaDiscover last-minute flight deals from San Francisco to Helena. Data last updated July 8, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Helena. Data last updated July 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/5. 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.
Wed 7/295:50 am
SFO
- HLN
1 stop5h 25m
Delta
Wed 8/55:40 am
HLN
- SFO
2 stops8h 51m
Delta
Deal found 7/5![Delta logo]()
$468
This Delta deal was found by Cheapflights users on 7/5. 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 8/45:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Mon 8/1012:55 pm
HLN
- SFO
2 stops9h 24m
Delta
Deal found 7/5![Delta logo]()
$480
This Delta deal was found by Cheapflights users on 7/6. 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 8/175:50 am
SFO
- HLN
1 stop5h 25m
Delta
Sun 8/235:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$477
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:08 pm
SFO
- HLN
1 stop4h 22m
Delta
Sun 8/235:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 7/6. 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 8/275:50 am
SFO
- HLN
1 stop5h 25m
Delta
Tue 9/15:40 am
HLN
- SFO
1 stop4h 10m
Delta
Deal found 7/6![Delta logo]()
$420
One-way flights from San Francisco to HelenaSearch for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated July 8, 2026.
Search for one-way flight options from San Francisco to Helena. Find affordable one-way fares based on user searches. Data last updated July 8, 2026.
This Delta deal was found by Cheapflights users on 7/7. 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 10/66:00 am
SFO
- HLN
1 stop5h 23m
Delta
Deal found 7/7![Delta logo]()
$191
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:00 am
SFO
- HLN
1 stop5h 24m
Delta
Deal found 7/7![Delta logo]()
$236
This Delta deal was found by Cheapflights users on 7/7. 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 7/315:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Deal found 7/7![Delta logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 7/6. 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 9/75:37 pm
SFO
- HLN
2 stops22h 04m
Alaska Airlines
Deal found 7/6![Alaska Airlines logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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 9/269:03 am
SFO
- HLN
1 stop6h 38m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:07 pm
SFO
- HLN
1 stop4h 32m
Delta
Deal found 7/7![Delta logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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 9/279:03 am
SFO
- HLN
1 stop6h 38m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:45 am
SFO
- HLN
1 stop5h 32m
Delta
Deal found 7/7![Delta logo]()
$420
Find flight deals from San Francisco to Helena
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $355 (Alaska Airlines) |
One-way from | $191 (Delta) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 8, 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
Tue 10/27
5:42 pm-4:11 pm
1 stop21h 29m
Helena
Sat 10/31
4:48 pm-10:44 pm
1 stop6h 56m
$355
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 8/27
5:50 am-12:15 pm
1 stop5h 25m
Helena
Tue 9/1
5:40 am-8:50 am
1 stop4h 10m
$420
Quickest round-trip
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 8/21
5:08 pm-10:30 pm
1 stop4h 22m
Helena
Sun 8/23
5:40 am-8:50 am
1 stop4h 10m
$459
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Wed 7/29
11:45 am-10:39 pm
2 stops9h 54m
Helena
Wed 8/5
5:40 am-3:29 pm
2 stops10h 49m
$473
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 8/4
5:08 pm-10:30 pm
1 stop4h 22m
Helena
Mon 8/10
12:55 pm-9:19 pm
2 stops9h 24m
$480
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Fri 9/25
5:45 am-12:17 pm
1 stop5h 32m
Helena
Sun 9/27
12:57 pm-9:29 pm
2 stops9h 32m
$482
Cheapest one-way
Quickest one-way
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Tue 10/6
6:00 am-12:23 pm
1 stop5h 23m
$191
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Thu 12/10
6:00 am-12:24 pm
1 stop5h 24m
$236
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 9/7
5:37 pm-4:41 pm
2 stops22h 04m
$288
San FranciscoHelena
SFO - HLN
SFOHLN
San Francisco
Mon 9/28
9:03 am-4:41 pm
1 stop6h 38m
$380
Sorted by cheapest first
Compare providers for flights from San Francisco to Helena
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Helena in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Helena flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Helena flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Helena
Have a flexible travel schedule? Discover the best time to fly to Helena from San Francisco with our price prediction graph.
SFO-HLN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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 July 8, 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.
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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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Alternative routes for San Francisco to Helena
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Complete your trip
Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Helena by cabin class
Find flights from San Francisco to Helena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helena
Explore flights to Helena departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 8, 2026.
San Francisco and Helena flights
Browse other San Francisco and Helena flight options. Last updated on July 8, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on July 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from San Francisco to Helena
Discover the top 2 airlines that operate flights from San Francisco to Helena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$430 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$291 | Average$588 | FlexibilityNo cancel fee | On-time75% |