HLN - SFO

$244 Find Cheap Flights from Helena to San Francisco

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to San Francisco departing on 5/27. 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 San Francisco

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

Cheap Flight Deals from Helena to San Francisco (HLN-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to San Francisco 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 Helena to San Francisco

KAYAK's recommended round-trip deals from the most popular airlines that fly from Helena to San Francisco.
Discover the best prices for you by selecting your travel dates on KAYAK.
Hawaiian Airlines Logo
4:11 pm - 8:10 pmHLN-SFO
4h 59m1 stop
Hawaiian Airlines Logo
9:25 am - 3:31 pmSFO-HLN
5h 06m1 stop
$244Hawaiian Airlines
Find Deal
Tue, May 27 - Tue, Jun 3
Alaska Airlines Logo
4:11 pm - 10:11 pmHLN-SFO
7h 00m1 stop
Alaska Airlines Logo
6:00 am - 3:31 pmSFO-HLN
8h 31m2 stops
$263Alaska Airlines
Find Deal
Tue, May 27 - Tue, Jun 3
Alaska Airlines Logo
4:11 pm - 1:58 pmHLN-SFO
22h 47m2 stops
Alaska Airlines Logo
6:00 am - 3:31 pmSFO-HLN
8h 31m2 stops
$297Alaska Airlines
Find Deal
Tue, May 27 - Tue, Jun 3
Useful Info

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

Get data-powered insights and trends into flights from Helena to San Francisco 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 Helena to San Francisco?

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

If your flying dates are flexible, you should consider flying to San Francisco on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Helena to San Francisco. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

Good to know

Low seasonMay
High seasonMarch
Cheapest flight$244
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Helena to San Francisco

When to book flights from Helena to San Francisco

Are your dates flexible? Find out the best times to travel from Helena to San Francisco 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 Helena to San Francisco

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

    In the last 3 days, the lowest price for a flight from Helena to San Francisco was $244 for a round-trip ticket.

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

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

  • Which airports will I be using when flying from Helena to San Francisco?

    Helena and San Francisco are both served by 1 main airport. You will leave Helena from Helena and will be arriving at San Francisco.

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

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

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

    oneworld is the only airline alliance operating flights between Helena and San Francisco.

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

    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 Helena to San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Helena 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 Helena to San Francisco?

    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 San Francisco with an airline and back to Helena with another airline. Booking your flights between Helena and SFO 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 Helena to San Francisco?

    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 San Francisco from Helena up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Helena to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Helena to San Francisco. 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 Helena to San Francisco? 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
DeltaOverall score based on 7936 reviews
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
Airline reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

10.0 ExcellentGary, Apr 2025TPA - LAX
Read more Delta reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

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

Information on your arrival and departure airports

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