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$119+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SFO
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Helena to San Francisco

Cheapest flights from Helena to San Francisco
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 November 13, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Sat 12/66:28 pmHLN - SFO
1 stop5h 17mAlaska Airlines
Sat 12/134:42 pmSFO - HLN
1 stop24h 09mAlaska Airlines
Deal found 11/12$238
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/61:06 pmHLN - SFO
2 stops10h 25mDelta
Sat 12/136:00 amSFO - HLN
1 stop5h 25mDelta
Deal found 11/12$279
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Sun 12/146:28 pmHLN - SFO
1 stop6h 31mAlaska Airlines
Thu 12/188:00 amSFO - HLN
1 stop8h 55mAlaska Airlines
Deal found 11/10$385
This Alaska Airlines deal was found by Cheapflights users on 11/13. 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 11/287:32 pmHLN - SFO
1 stop5h 04mAlaska Airlines
Tue 12/26:20 pmSFO - HLN
1 stop22h 31mAlaska Airlines
Deal found 11/13$558
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:30 amHLN - SFO
1 stop4h 26mDelta
Mon 12/16:00 amSFO - HLN
1 stop5h 26mDelta
Deal found 11/12$690
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 11/286:40 amHLN - SFO
2 stops14h 02mUnited Airlines
Tue 12/29:32 pmSFO - HLN
2 stops22h 50mUnited Airlines
Deal found 11/13$729
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:10 amHLN - SFO
1 stop17h 55mUnited Airlines
Sat 12/278:50 pmSFO - HLN
1 stop23h 41mUnited Airlines
Deal found 11/11$735
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 11/267:32 pmHLN - SFO
1 stop23h 14mAlaska Airlines
Sun 11/307:51 pmSFO - HLN
2 stops22h 01mAlaska Airlines
Deal found 11/10$789
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:40 amHLN - SFO
1 stop6h 15mUnited Airlines
Mon 12/18:45 pmSFO - HLN
2 stops23h 37mUnited Airlines
Deal found 11/12$790

Cheap 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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$238
(Hawaiian Airlines)

One-way from

$119
(Alaska Airlines)

Popular in

January

Cheapest in

May
Provider with most accurate pricing for Helena-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-San Francisco flights.
Search Deals
From Helena to San Francisco
Search Deals
One-way flight from Helena to San Francisco
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals

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 November 13, 2025.
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

Sat 3/7

4:36 pm-8:36 pm

1 stop5h 00m

San Francisco

Wed 3/11

8:42 am-3:59 pm

1 stop6h 17m

$238

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 12/6

6:28 pm-10:45 pm

1 stop5h 17m

San Francisco

Sat 12/13

4:42 pm-5:51 pm

1 stop24h 09m

$238

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 1/29

6:48 pm-11:03 pm

1 stop5h 15m

San Francisco

Mon 2/2

12:00 pm-6:11 pm

1 stop5h 11m

$238

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

4:36 pm-10:56 pm

1 stop7h 20m

San Francisco

Fri 3/13

7:28 pm-3:59 pm

1 stop19h 31m

$248

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

1:07 pm-10:54 pm

2 stops10h 47m

San Francisco

Wed 3/11

5:45 am-12:27 pm

1 stop5h 42m

$277

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 12/6

1:06 pm-10:31 pm

2 stops10h 25m

San Francisco

Sat 12/13

6:00 am-12:25 pm

1 stop5h 25m

$279

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

4:36 pm-9:55 pm

1 stop6h 19m

San Francisco

Wed 3/11

7:50 am-3:59 pm

2 stops7h 09m

$301

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 12/6

6:28 pm-10:45 pm

1 stop5h 17m

$119

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 12/4

6:28 pm-11:59 pm

1 stop6h 31m

$129

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 12/5

5:30 am-9:04 am

1 stop4h 34m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 16 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Helena-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Helena-San Francisco flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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

What is the cheapest month to book a flight from Helena to San Francisco?

Currently, July is the cheapest month in which you can book a flight from Helena to San Francisco (average of $41). Flying from Helena to San Francisco in May is currently the most expensive (average of $219). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • How long is the flight from Helena to San Francisco?

    For as low as $238, Hawaiian Airlines can have you in San Francisco from Helena in 5h. There are 816 mi between Helena and San Francisco. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Helena to San Francisco that include hotel bookings?

    Yes. In addition to deals on Helena to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to San Francisco.

  • Can I find deals for business class flights from Helena to San Francisco?

    Yes. Cheapflights offers flight deals from Helena to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Helena to San Francisco?

    Currently, July is the cheapest month in which you can book a flight from Helena to San Francisco (average of $41). Flying from Helena to San Francisco in May is currently the most expensive (average of $219). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
Vallejo
Hollister
San Bruno
Foster City
Redwood City
Union City
Burlingame
Lodi
San Mateo
Vacaville
Lathrop

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