SFO - HLN

$246 Find Cheap Flights from San Francisco to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Helena departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Helena, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$246
Alaska Airlines
Wed 3/4Mon 3/9
SFO - HLN • 1 stop
Cheapest one-way
$131
Alaska Airlines
Sat 2/28
SFO - HLN • 1 stop
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We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Helena that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Helena

Wed, Mar 4 - Mon, Mar 9
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 10:56 pm
HLN
-
SFO
7h 20m
1 stop
$246Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
7:28 pm - 3:59 pm
SFO
-
HLN
19h 31m
1 stop
Alaska Airlines Logo
4:36 pm - 9:55 pm
HLN
-
SFO
6h 19m
1 stop
$260Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
6:30 am - 3:59 pm
SFO
-
HLN
8h 29m
1 stop
Alaska Airlines Logo
4:36 pm - 10:56 pm
HLN
-
SFO
7h 20m
1 stop
$270Alaska Airlines
Wed, Mar 4 - Mon, Mar 9
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 5:34 pm
HLN
-
SFO
25h 58m
2 stops
$274Alaska Airlines
Wed, Mar 4 - Sun, Mar 8
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 9:55 pm
HLN
-
SFO
6h 19m
1 stop
$278Alaska Airlines
Fri, Mar 6 - Mon, Mar 9
Alaska Airlines Logo
7:28 pm - 3:59 pm
SFO
-
HLN
19h 31m
1 stop
Alaska Airlines Logo
4:36 pm - 10:56 pm
HLN
-
SFO
7h 20m
1 stop
$299Alaska Airlines
Thu, Mar 5 - Mon, Mar 9
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 5:34 pm
HLN
-
SFO
25h 58m
2 stops
$303Alaska Airlines
Thu, Mar 5 - Mon, Mar 9
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 3:48 pm
HLN
-
SFO
24h 12m
1 stop
$304Alaska Airlines
Thu, Mar 5 - Sun, Mar 8
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m
1 stop
Alaska Airlines Logo
4:36 pm - 9:55 pm
HLN
-
SFO
6h 19m
1 stop
$307Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
7:28 pm - 3:59 pm
SFO
-
HLN
19h 31m
1 stop
Alaska Airlines Logo
4:36 pm - 9:33 am
HLN
-
SFO
17h 57m
2 stops
$308Alaska Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Helena flights

Get data-powered insights and trends into flights from San Francisco to Helena to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from San Francisco to Helena?

Percentage of 1-stop round-trip flights from San Francisco to Helena chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Seattle (SEA) is the top choice – 54% of KAYAK users who clicked on 1-stop flights from San Francisco to Helena picked an itinerary connecting there.

What is the cheapest layover airport when flying from San Francisco to Helena?

Average round-trip price for 1-stop flights from San Francisco to Helena clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Seattle (SEA) offer the most affordable fares, with an average round-trip price of $505.

Which layover airport offers the shortest total travel time from San Francisco to Helena?

Shortest average total travel time for 1-stop one-way flights from San Francisco to Helena via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Salt Lake City (SLC) for the shortest journey. The average one-way travel time for flights connecting there is 5h 11m.

Which layover airport has the quickest connection when flying from San Francisco to Helena?

Average layover duration at different layover airports for 1-stop one-way flights from San Francisco to Helena, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Salt Lake City (SLC) often has the shortest layovers from San Francisco to Helena, with an average of 1h 12m.

Good to know

Low seasonOctober
Cheapest flight$131
Best time to beat the crowds with an average 50% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from San Francisco to Helena

When to book flights from San Francisco to Helena

Are your dates flexible? Find out the best times to travel from San Francisco to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Helena

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

    In the last 3 days, the lowest price for a flight from San Francisco to Helena was $246 for a round-trip ticket.

  • Do I need a passport to fly between San Francisco and Helena?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from San Francisco to Helena?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Helena?

    SkyTeam, and oneworld are the airline alliances operating flights between San Francisco and Helena, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from San Francisco to Helena, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from San Francisco to Helena are Alaska Airlines and Delta. With an average price for the route of $522 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $408 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Francisco to Helena?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Helena?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helena with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and HLN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Helena?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helena from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Francisco to Helena

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Helena. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Helena? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11819 reviews
8.1Boarding
7.8Comfort
7.0Entertainment
8.5Crew
7.1Food
Airline reviews

I paid for wifi and it never worked... it was miserable. I couldn't access my shared files to work on the plane, it didn't work on my phone. I paid for nothing but frustration and continual refreshing, hoping it would work

4.0 OkayStephanie, Jan 2026
SFO - SNA
Read more Alaska Airlines reviews

I paid for wifi and it never worked... it was miserable. I couldn't access my shared files to work on the plane, it didn't work on my phone. I paid for nothing but frustration and continual refreshing, hoping it would work

The stewardess are very nice and pleasant, Someone onboard had a medical attention, and they attended that person non-stop all throughout the flight, and yet, did not forget to serve and help other passengers.

The Alaska Airlines app made it very difficult to find my boarding pass. It was very frustrating to use! The flight itself was flawless.

The flight was excellent and very friendly and helpful staff. Will travel again and recommend to friends. Thank you

Did not have In flight service on my round trip due to turbulence. I did not partake in In flight entertainment. Flight descending into LAX was very turbulent. It would have been nice if the pilot communicated with us during that rough descent into LAX to ease the minds of some of us more nervous flyers.

They canceled my flight with only a couple hours before checking in at the airport and offered no alternatives to get home.

I had entered my TSA pre number when I bought the ticket but TSA pre was not on my boarding pass. I went to find an agent at check in and there was only one agent one duty for first class and a line of people waiting for check in/baggage with no agent manning that area.

Comfort level was below par. Food selection was non-existent. Paying $35 for 1st bag is never appreciated. I will not fly them again. I am actually trying to change my return flight.

The flight attendants were excellent and I was in the back of the plane. Much much better than recent JetBlue experiences on that route and better than Delta on that route.

I’m not sure there is anything that can be improved, even the cost was fantastic.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Everything you need to know for your flight from San Francisco to Helena

Information on your arrival and departure airports