SFO - HLN

$131 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 4/8. 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
$267
Alaska Airlines
ti. 4/28lø. 5/2
SFO - HLN • 1 stop
Cheapest one-way
$131
Delta
on. 4/8
SFO - HLN • 1 stop
Top airlines
Cheapest • from $267 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Francisco and Helena. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $484 (round-trip)
Shortest trip • 5h 15m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
2:00 pm - 5:45 pm
SFO
-
HLN
26h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 10:28 pm
HLN
-
SFO
5h 06m
1 stop
$267Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
5:31 pm - 5:45 pm
SFO
-
HLN
23h 14m
1 stop
Alaska Airlines Logo
6:22 pm - 10:28 pm
HLN
-
SFO
5h 06m
1 stop
$282Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
1:45 pm - 5:45 pm
SFO
-
HLN
27h 00m
2 stops
Alaska Airlines Logo
6:22 pm - 10:28 pm
HLN
-
SFO
5h 06m
1 stop
$292Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
5:57 pm - 5:45 pm
SFO
-
HLN
22h 48m
2 stops
Alaska Airlines Logo
6:22 pm - 10:28 pm
HLN
-
SFO
5h 06m
1 stop
$300Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
5:57 pm - 5:45 pm
SFO
-
HLN
22h 48m
2 stops
Alaska Airlines Logo
6:22 pm - 3:40 pm
HLN
-
SFO
22h 18m
2 stops
$378Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
5:57 pm - 5:45 pm
SFO
-
HLN
22h 48m
2 stops
Alaska Airlines Logo
6:22 pm - 3:40 pm
HLN
-
SFO
22h 18m
2 stops
$383Alaska Airlines
ti., apr. 28 - lø., mai 2
Alaska Airlines Logo
7:40 pm - 5:45 pm
SFO
-
HLN
21h 05m
2 stops
Alaska Airlines Logo
6:22 pm - 9:56 am
HLN
-
SFO
16h 34m
2 stops
$389Alaska Airlines
ti., jun. 30 - to., jul. 9
Delta Logo
6:00 am - 12:23 pm
SFO
-
HLN
5h 23m
1 stop
Delta Logo
12:50 pm - 6:35 pm
HLN
-
SFO
6h 45m
1 stop
$421Delta
lø., aug. 1 - lø., aug. 8
Delta Logo
6:00 am - 12:23 pm
SFO
-
HLN
5h 23m
1 stop
Delta Logo
5:45 am - 9:09 am
HLN
-
SFO
4h 24m
1 stop
$450Delta
fr., jul. 31 - ti., aug. 4
Delta Logo
5:00 pm - 10:34 pm
SFO
-
HLN
4h 34m
1 stop
Delta Logo
12:50 pm - 6:35 pm
HLN
-
SFO
6h 45m
1 stop
$460Delta
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.

Which airlines provide the cheapest flights from San Francisco to Helena?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Francisco to Helena were found on Alaska Airlines ($267) and Delta ($421).

Good to know

Low seasonApril
Cheapest flight$131
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly and prices are also 8% 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 $131 for a one-way ticket and $267 for a round-trip.

  • 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 $518 and an overall rating of 7.9, 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.
7.9
Alaska AirlinesOverall score based on 12058 reviews
7.8Comfort
7.0Food
8.5Crew
8.1Boarding
7.0Entertainment
Airline reviews

Nice crew, healthy snacks and drinks available. Flight to Seattle was short and comfortable.

10.0 ExcellentAnonymous, Feb 2026
SFO - SEA
Read more Alaska Airlines reviews

Nice crew, healthy snacks and drinks available. Flight to Seattle was short and comfortable.

had to be rerouted due to a medical emergency onboard. Alaska crew treated the patient with utmost respect and continued to keep the passengers updated the entire way through, which I appreciate. But it took 4 hours from landing until we were able to be airborne again, causing us to not get into SFO until ~2 am. I understand it was a tough situation for everyone, but that was an indecent wait.

I love Alaska! We arrived on the later side without seat assignments only to find the had oversold the flight by 1. The attendants worked extra hard to find a way for our party of 7 to stay together and we made it on the flight! Loved the free WiFi also!

Delay for switching planes. Then delay after delay (mechanical) after boarding so that we were almost 3 hrs late, getting in at 230am. Crew was good.

The he whole flight was very smooth on every aspects.

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.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

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

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

Information on your arrival and departure airports