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HLN - SFO

$172 Find cheap flights from Helena to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to San Francisco departing on 7/8. 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
0 bags
Sat 6/15
Sat 6/22

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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
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:00 am - 1:44 pmHLN-SFO
7h 44m1 stop
2:39 pm - 11:59 pmSFO-HLN
8h 20m2 stops
$327Alaska Airlines
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Wed, Jun 12 - Wed, Jun 19
3:01 pm - 9:35 pmHLN-SFO
7h 34m2 stops
2:39 pm - 11:59 pmSFO-HLN
8h 20m2 stops
$332Alaska Airlines
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Wed, Jun 12 - Wed, Jun 19
7:00 am - 11:44 pmHLN-SFO
17h 44m1 stop
10:18 am - 11:59 pmSFO-HLN
12h 41m1 stop
$347Alaska Airlines
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Wed, Jun 12 - Wed, Jun 19
1:10 pm - 6:20 pmHLN-SFO
6h 10m1 stop
5:15 pm - 10:30 pmSFO-HLN
4h 15m1 stop
$363Delta
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Thu, Aug 22 - Mon, Sep 2
6:45 am - 11:42 amHLN-SFO
5h 57m1 stop
6:35 am - 1:40 pmSFO-HLN
6h 05m1 stop
$368United Airlines
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Wed, Aug 21 - Mon, Sep 2
2:26 pm - 9:49 pmHLN-SFO
8h 23m2 stops
6:35 am - 1:40 pmSFO-HLN
6h 05m1 stop
$373United Airlines
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Wed, Aug 21 - Mon, Sep 2
6:45 am - 3:18 pmHLN-SFO
9h 33m2 stops
6:35 am - 1:40 pmSFO-HLN
6h 05m1 stop
$383United Airlines
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Thu, Aug 22 - Mon, Sep 2
1:10 pm - 4:19 pmHLN-SFO
4h 09m1 stop
7:59 pm - 12:30 pmSFO-HLN
15h 31m2 stops
$400Delta
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Fri, Aug 23 - Mon, Sep 2
1:10 pm - 11:29 pmHLN-SFO
11h 19m2 stops
7:59 pm - 12:30 pmSFO-HLN
15h 31m2 stops
$407Delta
Find Deal
Wed, Aug 21 - Mon, Sep 2
5:55 am - 11:55 amHLN-SFO
7h 00m2 stops
12:55 pm - 10:30 pmSFO-HLN
8h 35m2 stops
$1,231Delta
Find Deal
Thu, Aug 22 - Mon, Sep 2

Flights from Helena to San Francisco - Travel Insights & Trends

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 flights from Helena to San Francisco clicked on KAYAK for each day over the last 12 months.
When flying from Helena to San Francisco, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to Helena, you’ll find the best rates on Sundays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Helena to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Helena to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Helena to San Francisco is February, where tickets cost $316 on average. On the other hand, the most expensive months are March and July, where the average cost of tickets is $989 and $782 respectively.

Good to know

Low season

October

High season

December

Cheapest flight

$172
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 33% lower on average.
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 $172 for a one-way ticket and $327 for a round-trip.

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

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

    The two airlines most popular with KAYAK users for flights from Helena to San Francisco are Delta and Alaska Airlines. With an average price for the route of $437 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 $416 and an overall rating of 8.0.

  • 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.

See more FAQs

Top 3 airlines serving 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
Alaska AirlinesOverall score based on 9157 reviews
7.3Food
8.6Crew
7.9Comfort
7.3Entertainment
8.2Boarding
Airline reviews

They canceled my flight going back to SF after I was at the airport. Wanted me to take a flight 14 hours later. Not a happy camper.

2.0 MediocreRandy, May 2024SEA - SFO
Read more about Alaska Airlines reviews

They canceled my flight going back to SF after I was at the airport. Wanted me to take a flight 14 hours later. Not a happy camper.

I didn’t like not knowing my seat till I got to the airport - and my boarding group was F (last).

Clean plane, relatively spacious in Main Cabin. One experience: I'm 79, with torn rotator cuff (R shoulder). I asked for help getting my carryon into the overhead bin and was told that the staff "does not help with this" (or some such phrase. On previous flights, help has been offered (and accepted). I prevailed on a fellow passenger for this. Also, why not board back to front?? Would this not help in the speed of boarding?

No tv, movies for a 6 hour flight! Worst airline I have ever travelled!

Ground crew was great in Austin, flight crew left a lot to be desired. Not particularly friendly, helpful or nice.

Like South West(2 check in baggage free) if Alaskan Airlines could give at least one check in baggage free then it would be great.

Staff great. Tight seating. Pretzels and drink same as any other airline.

Horrible. I likely will have to spend several thousand dollars to rebook my international flights, due to their delays, plus a hotel in SF. I can’t wait to never fly them again!

The messaging about the change in flight destination and options for getting to SFO was poor. There should have been frequent updates. When I spoke to the boarding agent moment before we were supposed to board, he was flippant and offered no help before the announcement was made that transportation would be arranged. It was as poor of an experience that I've ever had.

My plane ride down landed 20 min late. Boarding at SFO was strange too. The people at the terminal were nice—but, boarding lacked direction, and was confusing . Coming back was worse—the plane was hours behind—and I barely caught the last Bart train back to San Francisco (3 min more and I would have been in trouble). It was a very stressful trip, and it didn’t need to be.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

My experience is based on one crew member. I had found my seat and sat down but there was a gentleman to claimed to the flight attendant I was in his seat. She then came to me and curtly said, "I need your ticket!" No hi, no excuse me may I see your boarding pass? NOTHING! I was taken aback by her attitude and she repeated herself, "your ticket?!?!" I calmly responded with ok, here you go. Only to discover the gentleman was looking at the wrong boarding pass. She gave me back my ticket with no apology. She then was curt with another man who was putting his coat in the overhead bin, already helped by another flight attendant who said it was fine. She realizes it's ok and then asks him if he drinks. The look on the man's face was priceless. She said she was going to comp him drinks. He gets offered a comp drink for a coat as well as an apology, and I got no apology.

Book cheap flights from Helena to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Helena to San Francisco found on KAYAK in the last 72 hours.
7/8Mon
1 stopAlaska Airlines
27h 15mHLN-SFO
$172
7/8Mon
2 stopsAlaska Airlines
22h 24mHLN-SFO
$207
7/6Sat
1 stopAlaska Airlines
13h 56mHLN-SFO
$287
7/6Sat
2 stopsAlaska Airlines
7h 23mHLN-SFO
$322
7/6Sat
1 stopAlaska Airlines
13h 56mHLN-SFO
$357
7/6Sat
2 stopsAlaska Airlines
12h 24mHLN-SFO
$372

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Helena - San Francisco Flights

Departure:

Helena (undefined)United States

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Helena

Cabin classes: