SFO - HLN

$195 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 5/28. 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
$349
Delta
Sat 5/23Sat 5/30
SFO - HLN • 1 stop
Cheapest one-way
$195
Delta
Thu 5/28
SFO - HLN • 1 stop
Top airlines
Cheapest • from $349 (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 $472 (round-trip)
Shortest trip • 5h 16m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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

Sat, May 23 - Sat, May 30
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
$349Delta
Sat, May 23 - Sat, May 30
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
1:03 pm - 9:19 pm
HLN
-
SFO
9h 16m
2 stops
$354Delta
Sat, May 30 - Wed, Jun 3
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
$369Delta
Sat, May 30 - Wed, Jun 3
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
5:45 am - 1:36 pm
HLN
-
SFO
8h 51m
2 stops
$374Delta
Fri, May 29 - Mon, Jun 1
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
$389Delta
Fri, May 29 - Mon, Jun 1
Delta Logo
4:55 pm - 10:33 pm
SFO
-
HLN
4h 38m
1 stop
Delta Logo
1:03 pm - 12:03 am
HLN
-
SFO
12h 00m
2 stops
$394Delta
Sat, Jun 6 - Wed, Jun 10
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
5:35 am - 8:56 am
HLN
-
SFO
4h 21m
1 stop
$395Delta
Wed, Jul 15 - Wed, Jul 22
Delta Logo
5:50 am - 12:15 pm
SFO
-
HLN
5h 25m
1 stop
Delta Logo
5:40 am - 8:51 am
HLN
-
SFO
4h 11m
1 stop
$397Delta
Sat, Jun 6 - Wed, Jun 10
Delta Logo
5:40 am - 12:23 pm
SFO
-
HLN
5h 43m
1 stop
Delta Logo
1:00 pm - 9:50 pm
HLN
-
SFO
9h 50m
2 stops
$400Delta
Wed, Jul 15 - Wed, Jul 22
Delta Logo
5:50 am - 12:15 pm
SFO
-
HLN
5h 25m
1 stop
Delta Logo
12:55 pm - 9:49 pm
HLN
-
SFO
9h 54m
2 stops
$402Delta
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 is the cheapest month to fly from San Francisco to Helena?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Helena, 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 San Francisco to Helena is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $847 and $628 respectively.

Good to know

Low seasonOctober
Cheapest flight$195
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 1% 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 $195 for a one-way ticket and $349 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?

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

  • 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 airline 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 12317 reviews
7.0Entertainment
8.5Crew
8.1Boarding
7.8Comfort
7.1Food
Airline reviews

The flight would have been very good , if not dor the constantly screaming baby in the row behind me. Is there a way to isolate people traveling with infants? This is not the first time this has happened to me.

6.0 GoodAnonymous, Apr 2026
SFO - PDX
Read more Alaska Airlines reviews

The flight would have been very good , if not dor the constantly screaming baby in the row behind me. Is there a way to isolate people traveling with infants? This is not the first time this has happened to me.

They treat me well because of my one world status. Crew is attentive and professional. One of the best airlines out there.

Crew were bad Didn’t help with luggage When asked for a glass of wine, I was told that they will serve later , which they didn’t to Me and didn’t serve anyone else in First class . Didn’t offer any snacks , Chips or Nuts to anyone . Flight was not crowded either. Worst Service/ or No Service !

Alaska drastically changed our flight from a direct flight to a flight with connection and a long layover. So we canceled the Alaska flight and we learned a valuable lesson that we will never book through kayak again because the third party travel agent tried to withhold our money.

Four hour delay. Missed our event. And they offered me $75. Absolutely shameful.

I have been flying commercial for decades. I was in one of the ladder boarding groups, had my bag tagged because they thought there was not going to be enough space for it in the overhead bins. I politely asked one of the attendance if I could try to find a space- she said I could and I did. I then took the bag tag off and gave it to one of the other attendants as I was told to do by the first one. He, in a curt, anal, and disrespectful manner, told me that I needed to take my bag down from the overhead bin and check it. This was a situation I’ve never encountered before. The attendant’s attitude was confrontational and belittling in front of other onlooking passengers as if daring me to challenge him. I am a physician who takes care of patients day in and day out. Not wanting to make a scene, I calmly told him, “do what you need to do.” he took my bag down from the overhead bin, put the back tag back on it, and checked it only to make room for another bag that was also supposed to be technically checked by a following passenger. The same male attendant later came up to me and said “you shouldn’t have showed me the bag tag,” as if conveying that he was just following protocol was a justification for treating me like a kid out of line. I cared about this because it took 15 minutes from my life to then retrieve the bag at baggage claim and it also felt like really poor customer service. I understand the need for protocols. This is also a service industry, and we the passengers are the clients. We should be made to feel welcome and respected and our life in transit made as easy as it can be within reason. This attendant clearly needs to be reminded of that. Of note, an older female fellow passenger sitting next to me agreed with this assessment.

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.

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

Information on your arrival and departure airports