SFO - HLN

$165 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 8/1. 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

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 22% 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.

Flights Deals
Useful Info
Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from San Francisco to Helena

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Francisco to Helena.
Discover the best prices for you by selecting your travel dates on KAYAK.
Alaska Airlines Logo
8:00 am - 3:21 pmSFO-HLN
6h 21m1 stop
Alaska Airlines Logo
4:02 pm - 8:20 pmHLN-SFO
5h 18m1 stop
$328Alaska Airlines
Find Deal
Sat, Sep 13 - Fri, Sep 19
Delta Logo
5:45 am - 12:39 pmSFO-HLN
5h 54m1 stop
Delta Logo
5:45 am - 9:12 amHLN-SFO
4h 27m1 stop
$329Delta
Find Deal
Mon, Sep 15 - Sat, Sep 20
Delta Logo
5:30 am - 12:20 pmSFO-HLN
5h 50m1 stop
Delta Logo
1:00 pm - 4:13 pmHLN-SFO
4h 13m1 stop
$354Delta
Find Deal
Sun, Jul 20 - Sat, Jul 26
Delta Logo
5:05 pm - 10:58 pmSFO-HLN
4h 53m1 stop
Delta Logo
5:44 am - 9:22 amHLN-SFO
4h 38m1 stop
$359Delta
Find Deal
Thu, Jun 12 - Mon, Jun 16
Delta Logo
5:15 pm - 10:37 pmSFO-HLN
4h 22m1 stop
Delta Logo
1:03 pm - 10:30 pmHLN-SFO
10h 27m2 stops
$366Delta
Find Deal
Tue, Sep 16 - Wed, Sep 17
Delta Logo
6:00 am - 10:37 pmSFO-HLN
15h 37m2 stops
Delta Logo
5:45 am - 9:12 amHLN-SFO
4h 27m1 stop
$377Delta
Find Deal
Sat, Sep 13 - Thu, Sep 18
Alaska Airlines Logo
7:00 am - 3:21 pmSFO-HLN
7h 21m1 stop
Alaska Airlines Logo
4:02 pm - 9:12 amHLN-SFO
18h 10m1 stop
$391Alaska Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 21
Hawaiian Airlines Logo
10:33 am - 6:49 pmSFO-HLN
7h 16m1 stop
Hawaiian Airlines Logo
4:11 pm - 9:11 pmHLN-SFO
6h 00m1 stop
$568Hawaiian Airlines
Find Deal
Wed, May 14 - Sun, May 18
United Airlines Logo
5:00 am - 1:30 pmSFO-HLN
7h 30m1 stop
United Airlines Logo
5:20 pm - 11:10 pmHLN-SFO
6h 50m1 stop
$573United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 15
United Airlines Logo
6:30 am - 1:30 pmSFO-HLN
6h 00m1 stop
United Airlines Logo
5:20 pm - 11:10 pmHLN-SFO
6h 50m1 stop
$602United Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 18
Useful Info

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
High seasonJune
Cheapest flight$165
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly and prices are also 12% 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 $165 for a one-way ticket and $328 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, oneworld, and Star Alliance 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, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Helena are Delta and Alaska Airlines. With an average price for the route of $398 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $558 and an overall rating of 8.0.

  • 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.

Top 3 airlines serving 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 9968 reviews
8.5Crew
7.1Food
7.9Comfort
8.2Boarding
7.1Entertainment
Airline reviews

No non-alcoholic drinks available except water and small apple juice cans.

8.0 ExcellentJohn, Apr 2025SFO - LAS
Read more Alaska Airlines reviews

No non-alcoholic drinks available except water and small apple juice cans.

The flight was delayed over two and a half hours thus causing me to miss my best friend’s funeral. All because the flight crew had to get more rest. That was the reason stated. I understand however very unfortunate. Glad everyone is well rested and resting in peace.

All good except both the outbound and return flights were delayed about 1 1/2 hrs.

Not great. My flight was canceled due to a mechanical problem and I could not get rebooked for the same day. I needed to get to my destination yesterday, not today. I was able to book with another airline but it was a layover and ultimately a 1 hour flight took me 12 hours. Normally I like Alaska much more than Southwest, but Southwest came through with a not terrible price for same day.

The plane was late arriving. The Alaska people did a great job of turning it around quickly and getting us off. We took off about 35 minutes after it reached the gate.

I liked the flight attendant named Tyler. He was charismatic and genuine. I like the pilot in my second flight, he was considerate to everyone’s feelings. I liked the people I sat beside. I like the plane size. I like Alaska airlines

Flight delay was inconvenient and exhausting getting in at 1 am. However the crew and lounge was very comfortable.

No complaints. Great service. A first class entry lane at boarding wouldn’t hurt.

I appreciate the priority for safety. I did not enjoy how the delays were handled.

Awful . Extra charge on my bags even after it was confirmed it wasn’t overweight.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.