SFO - HLN

$184 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 4/24. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$238
Typical prices: $552-$816
Alaska Airlines
Wed 1/28Sat 1/31
SFO - HLN • 1 stop
Cheapest one-way
$184
Alaska Airlines
Fri 4/24
SFO - HLN • 1 stop
Start a new search
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

Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
Alaska Airlines Logo
6:48 pm - 11:03 pm
HLN
-
SFO
5h 15m1 stop
$238Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
7:00 am - 6:11 pm
SFO
-
HLN
10h 11m2 stops
Alaska Airlines Logo
6:48 pm - 11:03 pm
HLN
-
SFO
5h 15m1 stop
$276Alaska Airlines
Tue, Feb 10 - Sat, Feb 14
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
Alaska Airlines Logo
4:36 pm - 10:56 pm
HLN
-
SFO
7h 20m1 stop
$283Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
7:57 am - 6:11 pm
SFO
-
HLN
9h 14m2 stops
Alaska Airlines Logo
6:48 pm - 11:03 pm
HLN
-
SFO
5h 15m1 stop
$286Alaska Airlines
Tue, Feb 10 - Sat, Feb 14
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
Alaska Airlines Logo
4:36 pm - 2:26 pm
HLN
-
SFO
22h 50m2 stops
$313Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
7:00 am - 6:11 pm
SFO
-
HLN
10h 11m2 stops
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
$328Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
7:57 am - 6:11 pm
SFO
-
HLN
9h 14m2 stops
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
$338Alaska Airlines
Tue, Feb 10 - Sat, Feb 14
Alaska Airlines Logo
2:52 pm - 6:11 pm
SFO
-
HLN
26h 19m2 stops
Alaska Airlines Logo
4:36 pm - 2:26 pm
HLN
-
SFO
22h 50m2 stops
$350Alaska Airlines
Tue, Jun 9 - Fri, Jun 19
Delta Logo
6:00 am - 12:23 pm
SFO
-
HLN
5h 23m1 stop
Delta Logo
12:50 pm - 6:35 pm
HLN
-
SFO
6h 45m1 stop
$369Delta
Mon, Apr 6 - Sat, Apr 11
Alaska Airlines Logo
5:45 pm - 3:38 pm
SFO
-
HLN
20h 53m1 stop
Alaska Airlines Logo
4:10 pm - 10:10 pm
HLN
-
SFO
7h 00m1 stop
$393Alaska 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’s the cheapest day of the week to fly from San Francisco to Helena?

The average price of all round-trip flights from San Francisco to Helena clicked on KAYAK for each day over the last 12 months.

When flying from San Francisco to Helena, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Mondays and the most expensive ones on Sundays.

Good to know

Low seasonOctober
Cheapest flight$184
Best time to beat the crowds with an average 52% drop in price.
Most popular time to fly and prices are also 16% 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 $184 for a one-way ticket and $238 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 $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 $420 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 11478 reviews
8.1Boarding
8.5Crew
7.1Food
7.0Entertainment
7.8Comfort
Airline reviews

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.

10.0 ExcellentAnonymous, Dec 2025
SFO - BOS
Read more Alaska Airlines reviews

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.

Poor. They should have given me a row with more room and instead they put me in a middle seat with two strangers next to me

Flight crew and flight were good. But it departed two hours late.

The ground crew did not supply drink or snacks during the layover in SFO. So there weren't many options. Otherwise, it was all great.

I love a red eye flight. No lines to wait in. Lots of turbulence on the flight and a very shaky landing.

Flight was delayed 14 hours! We missed an entire day of our vacation and had to pay for hotel that we didn’t use

Could not check in online. Called airline twice, thinking Hawaiian Airlines could check me in during phone call. NO. In 2nd phone call, Customer Service explained that due to “transition period” of Hawaiian Airlines/Alaska Airlines merger, I could only check in at the airport. In addition, flight to Kahului was late at arrival gate; I made connection to Lihue but my bag did not, so I had to return to Lihue airport a couple hours after my arrival to retrieve the bag.

I still in San Francisco😡the flight has delay and lm not sure l can back to Seattle or not😡lm here from 7.30pm and still waiting😡 l never will use of Kayak.

On time boarding, take off and landing. Will fly again with Alaska Airlines.

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.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

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

Information on your arrival and departure airports