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Helena

$136+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HLN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$311
(Delta)

One-way from

$136
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$736
From San Francisco to Helena
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One-way flight from San Francisco to Helena
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Highest demand for flights based on searches. 25% potential increase in price ($201 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Francisco to Helena

Cheapest flights from San Francisco to Helena
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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/17. 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 11/76:00 amSFO - HLN
1 stop5h 20mDelta
Sun 11/95:33 amHLN - SFO
1 stop4h 23mDelta
Deal found 9/17$356
This Delta deal was found by Cheapflights users on 9/17. 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 10/84:54 pmSFO - HLN
1 stop4h 22mDelta
Sun 10/125:45 amHLN - SFO
1 stop4h 15mDelta
Deal found 9/17$369
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:00 amSFO - HLN
1 stop6h 21mHawaiian Airlines
Tue 10/76:18 pmHLN - SFO
1 stop5h 11mHawaiian Airlines
Deal found 9/15$405
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/306:00 amSFO - HLN
1 stop8h 21mAlaska Airlines
Tue 10/76:18 pmHLN - SFO
2 stops18h 33mAlaska Airlines
Deal found 9/15$436
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/39:19 pmSFO - HLN
1 stop19h 22mAlaska Airlines
Fri 10/106:18 pmHLN - SFO
1 stop24h 43mAlaska Airlines
Deal found 9/15$498
This Delta deal was found by Cheapflights users on 9/16. 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 11/236:00 amSFO - HLN
1 stop5h 26mDelta
Fri 11/285:33 amHLN - SFO
1 stop4h 23mDelta
Deal found 9/16$508
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 11/236:00 amSFO - HLN
1 stop11h 52mAlaska Airlines
Mon 12/17:32 pmHLN - SFO
2 stops19h 04mAlaska Airlines
Deal found 9/15$509
This Delta deal was found by Cheapflights users on 9/15. 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 10/34:55 pmSFO - HLN
1 stop4h 19mDelta
Sat 10/41:00 pmHLN - SFO
1 stop4h 09mDelta
Deal found 9/15$539
This United Airlines deal was found by Cheapflights users on 9/17. 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 11/710:44 pmSFO - HLN
2 stops13h 43mUnited Airlines
Sun 11/92:22 pmHLN - SFO
2 stops18h 02mUnited Airlines
Deal found 9/17$552

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 September 17, 2025.
Use the filters below to find and compare flights from San Francisco to Helena that are best for you.

Fly from

San Francisco

Fly to

Helena

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 11/7

6:00 am-12:20 pm

1 stop5h 20m

Helena

Sun 11/9

5:33 am-8:56 am

1 stop4h 23m

$356

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 10/8

4:54 pm-10:16 pm

1 stop4h 22m

Helena

Sun 10/12

5:45 am-9:00 am

1 stop4h 15m

$369

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 9/30

8:00 am-3:21 pm

1 stop6h 21m

Helena

Tue 10/7

6:18 pm-10:29 pm

1 stop5h 11m

$405

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 9/30

6:00 am-3:21 pm

1 stop8h 21m

Helena

Tue 10/7

6:18 pm-11:51 am

2 stops18h 33m

$436

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 11/7

8:43 pm-5:36 pm

1 stop19h 53m

Helena

Sun 11/9

6:13 pm-3:47 pm

2 stops22h 34m

$436

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 10/3

9:19 pm-5:41 pm

1 stop19h 22m

Helena

Fri 10/10

6:18 pm-6:01 pm

1 stop24h 43m

$498

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sun 11/23

6:00 am-12:26 pm

1 stop5h 26m

Helena

Fri 11/28

5:33 am-8:56 am

1 stop4h 23m

$508

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sun 11/23

6:00 am-6:52 pm

1 stop11h 52m

Helena

Mon 12/1

7:32 pm-9:34 pm

1 stop27h 02m

$533

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 1/30

9:10 am-3:43 pm

1 stop5h 33m

$136

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Thu 1/29

9:10 am-3:43 pm

1 stop5h 33m

$136

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 results
1
2

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.
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 San Francisco to Helena

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to Helena (average of $353). Flying from San Francisco to Helena in May is currently the most expensive (average of $517). 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.

What is the cheapest time of day to fly from SFO to HLN?

Find hourly flight availability from San Francisco to Helena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from San Francisco to Helena is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 60% on airfare.

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 September 17, 2025.
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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

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

    Delta and Hawaiian Airlines can get you from San Francisco to Helena in just under 5h 20m. Your travel time can differ by up to 1h 01m. There are 816 mi between San Francisco and Helena. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Francisco to Helena round-trip?

    Cheapflights users have booked flights from San Francisco to Helena round-trip from $215. Another airline that can offer you cheap pricing is Alaska Airlines. Delta is 63% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Helena 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 San Francisco to Helena?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Helena (average of $353). Flying from San Francisco to Helena in May is currently the most expensive (average of $517). 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

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$215Average$408FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$273Average$511FlexibilityNo cancel feeOn-time75%

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