Cheap Alaska Airlines flights Helena (HLN) to San Francisco (SFO)

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

January is typically the cheapest month to fly

From $220 - $657 per traveler.

Alternative airports near San Francisco

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

Select flight to Oakland Intl. OAK. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $548
OAK
Oakland Intl.
Cheapest
Average driving time to city center26 min
Flights from $548
Flights from Helena (HLN) to San Francisco (SFO)
Origin airport
Helena Regional
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, Delta, United
Popular airline
Alaska Airlines
Distance
817 mi

Frequently asked questions

How much is an Alaska Airlines flight from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO)?
Scoring cheap one-way Alaska Airlines flights from HLN to SFO on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from HLN to SFO with Alaska Airlines?
Alaska Airlines flights to San Francisco are often cheaper in the low-season months of February and April. Whether you're after a one-way or round-trip ticket, you could land a better deal then.
What is the cheapest time to book flights from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO) with Alaska Airlines?
Look for cheap Alaska Airlines flights from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO) one to three months prior to your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO)?
Fill in your dates, click search and check "Nonstop" on Expedia to browse any direct flights from HLN to SFO with Alaska Airlines or another airline.
What is the earliest Alaska Airlines flight from HLN to SFO?
To find the earliest departures from HLN to SFO with Alaska Airlines, filter your search by "Morning" and "Early Morning." Booking an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in San Francisco?
Get on an Alaska Airlines flight from Helena Regional Airport (HLN) to San Francisco, and you'll most likely come in to San Francisco Intl. Airport (SFO). This is the airline's main hub in this destination.
Why fly with Alaska Airlines from HLN to SFO?
With top-tier customer service and a rewarding loyalty program, Alaska Airlines is a top choice for many travelers heading from HLN to SFO. What's more, if you're a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO)?
Changes are usually free within 24 hours of making your booking, but your airline may charge a fee after that. For further details about modifying your flights, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to change your plans without additional costs, apply the "No cancel fee" or "Changes included" filter when planning your next escape.

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*Available to One Key members.