$131 Cheap Flights from San Francisco (SFO) to Helena (HLN)

View $131 flight on Thu, Dec 11, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Helena, MT (HLN-Helena Regional)

Cheap Flights from San Francisco to Helena (SFO-HLN)

Prices were available within the past 7 days and start at $131 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Jan 15 - Thu, Jan 29
SFO
San Francisco
HLN
Helena
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 15 from San Francisco to Helena, returning Thu, Jan 29, priced at $258 found 5 days ago
Alaska Airlines
Wed, Jan 7 - Tue, Feb 24
SFO
San Francisco
HLN
Helena
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from San Francisco to Helena, returning Tue, Feb 24, priced at $260 found 6 days ago
Hawaiian Airlines
Tue, Dec 9 - Tue, Jan 6
SFO
San Francisco
HLN
Helena
$262 Roundtrip, found 11 hours ago
$262
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, Dec 9 from San Francisco to Helena, returning Tue, Jan 6, priced at $262 found 11 hours ago
Hawaiian Airlines
Mon, Dec 15 - Tue, Jan 6
SFO
San Francisco
HLN
Helena
$267 Roundtrip, found 11 hours ago
$267
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Mon, Dec 15 from San Francisco to Helena, returning Tue, Jan 6, priced at $267 found 11 hours ago
Alaska Airlines
Wed, Jan 7 - Tue, Feb 24
SFO
San Francisco
HLN
Helena
$278 Roundtrip, found 6 days ago
$278
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from San Francisco to Helena, returning Tue, Feb 24, priced at $278 found 6 days ago
Hawaiian Airlines
Tue, Dec 9 - Wed, Dec 31
SFO
San Francisco
HLN
Helena
$282 Roundtrip, found 11 hours ago
$282
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, Dec 9 from San Francisco to Helena, returning Wed, Dec 31, priced at $282 found 11 hours ago
Hawaiian Airlines
Thu, Dec 11 - Tue, Jan 6
SFO
San Francisco
HLN
Helena
$287 Roundtrip, found 11 hours ago
$287
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Thu, Dec 11 from San Francisco to Helena, returning Tue, Jan 6, priced at $287 found 11 hours ago
Alaska Airlines
Thu, Jan 15 - Thu, Jan 29
SFO
San Francisco
HLN
Helena
$290 Roundtrip, found 5 days ago
$290
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 15 from San Francisco to Helena, returning Thu, Jan 29, priced at $290 found 5 days ago
Delta
Tue, Dec 16 - Wed, Dec 17
SFO
San Francisco
HLN
Helena
$304 Roundtrip, found 3 days ago
$304
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 16 from San Francisco to Helena, returning Wed, Dec 17, priced at $304 found 3 days ago
United
Thu, Nov 13 - Mon, Nov 17
SFO
San Francisco
HLN
Helena
$538 Roundtrip, found 4 days ago
$538
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 13 from San Francisco to Helena, returning Mon, Nov 17, priced at $538 found 4 days ago

Find the cheapest month to fly from San Francisco (SFO) to Helena (HLN)

February is typically the cheapest month to fly

From $220 - $833 per traveler.

Alternative airports near Helena

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Helena Regional HLN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $444
HLN
Helena Regional
CheapestClosest
Average driving time to city center7 min
Flights from $444

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN) cost?
Lock in a cheap one-way flight from $131 or cheap return flight from $258 from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN)?
The cheapest month to fly from SFO to HLN is January, when demand is low. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SFO to HLN flight.
How many flights per day from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN)?
There are no daily nonstop flights available from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from SFO to HLN?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN)?
Book a flight from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN) that leaves before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN) last-minute?
Booking your plane ticket from SFO to HLN just before your getaway is usually more expensive. But if you're flexible with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a SFO to HLN flight and hotel package?
You can save money by securing a SFO to HLN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Helena Regional Airport (HLN)?
In most cases, you're able to reschedule or cancel your SFO to HLN flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, go to our Customer Service portal.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Helena Regional
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$258
Distance
817 mi

Book with confidence

San Francisco to Helena Flights

The cheapest times to fly from San Francisco to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Helena are during the month of January. You can find some of the cheapest flights from San Francisco to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Helena

Sunday is one of the best days to book for cheap flights from San Francisco to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $131 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Helena Flights

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*Available to One Key members.