SFO - BIL

$114 Find Cheap Flights from San Francisco to Billings

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 Billings departing on 9/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Billings

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

Cheap Flights from San Francisco to Billings (SFO-BIL)

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

Wed, Sep 17 - Tue, Sep 23
Hawaiian Airlines Logo
11:30 am - 6:38 pmSFO-BIL
6h 08m1 stop
Hawaiian Airlines Logo
3:43 pm - 7:45 pmBIL-SFO
5h 02m1 stop
$248Hawaiian Airlines
Find Deal
Mon, Sep 8 - Thu, Sep 11
Hawaiian Airlines Logo
4:52 pm - 12:11 amSFO-BIL
6h 19m1 stop
Hawaiian Airlines Logo
7:18 pm - 12:04 amBIL-SFO
5h 46m1 stop
$254Hawaiian Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6
Delta Logo
5:03 pm - 10:47 pmSFO-BIL
4h 44m1 stop
Delta Logo
6:08 pm - 10:51 pmBIL-SFO
5h 43m1 stop
$255Delta
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Wed, Sep 3 - Sat, Sep 6
Delta Logo
5:03 pm - 10:47 pmSFO-BIL
4h 44m1 stop
Delta Logo
5:25 am - 11:33 amBIL-SFO
7h 08m2 stops
$260Delta
Find Deal
Wed, Sep 3 - Sat, Sep 6
Delta Logo
1:45 pm - 10:47 pmSFO-BIL
8h 02m2 stops
Delta Logo
5:25 am - 2:50 pmBIL-SFO
10h 25m2 stops
$265Delta
Find Deal
Mon, Sep 8 - Thu, Sep 11
Alaska Airlines Logo
4:30 pm - 1:24 pmSFO-BIL
19h 54m2 stops
Alaska Airlines Logo
3:43 pm - 7:45 pmBIL-SFO
5h 02m1 stop
$291Alaska Airlines
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Fri, Oct 10 - Mon, Oct 13
Alaska Airlines Logo
9:47 pm - 1:19 pmSFO-BIL
14h 32m1 stop
Alaska Airlines Logo
7:15 pm - 9:16 amBIL-SFO
15h 01m1 stop
$292Alaska Airlines
Find Deal
Thu, Sep 4 - Thu, Sep 4
United Airlines Logo
5:00 am - 1:17 pmSFO-BIL
7h 17m1 stop
United Airlines Logo
5:57 pm - 9:15 amBIL-SFO
16h 18m2 stops
$403United Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
12:47 am - 11:49 amSFO-BIL
10h 02m1 stop
American Airlines Logo
12:19 pm - 11:33 pmBIL-SFO
12h 14m1 stop
$442American Airlines
Find Deal
Tue, Sep 2 - Sat, Sep 6
American Airlines Logo
12:47 am - 11:49 amSFO-BIL
10h 02m1 stop
American Airlines Logo
6:00 am - 6:01 pmBIL-SFO
13h 01m1 stop
$524American Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from San Francisco to Billings to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to Billings?

What’s the cheapest day of the week to fly from San Francisco to Billings?

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

Your flight ticket price will generally be cheaper if you fly to Billings on a Thursday and more expensive on a Tuesday. On your return trip to San Francisco, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Billings, 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 Billings is September, where tickets cost $331 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $548 and $531 respectively.

How far in advance should I book a flight from San Francisco to Billings?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Billings, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Billings, you should book around 4 weeks before departure, which saves you about 64% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$114
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from San Francisco to Billings

When to book flights from San Francisco to Billings

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

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

    In the last 3 days, the lowest price for a flight from San Francisco to Billings was $114 for a one-way ticket and $248 for a round-trip.

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

    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 Billings?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Francisco to Billings are Delta and Alaska Airlines. With an average price for the route of $393 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 $528 and an overall rating of 8.0.

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

    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 Billings.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings 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 Billings?

    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 Billings with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and BIL 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 Billings?

    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 Billings 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 3 airlines serving from San Francisco to Billings

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Billings. 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 Billings? 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 10000 reviews
8.1Boarding
7.1Food
7.1Entertainment
7.8Comfort
8.5Crew
Airline reviews

Delayed flight both ways. Then, on the return flight, we were stuck on the tarmac for at least 30+ minutes. Idk what happened, but this was a bad experience.

2.0 MediocreAnonymous, Jul 2025SFO - BUR
Read more Alaska Airlines reviews

Delayed flight both ways. Then, on the return flight, we were stuck on the tarmac for at least 30+ minutes. Idk what happened, but this was a bad experience.

Great flight, no bumps to speak of, pleasant crew, good inflight entertainment choices

Coffee or tea service would be nice for an evening flight, water or juice not good enough.

this flight had a 7 hour delay due to weather in NYC. It diverted to Pittsburgh for 2 hours then proceeded to NYC. Through it all the crew and flight attendants were terrific. They gave timely information, showed empathy , and were very professional.

Paying for first class and then they want $8:00 for wifi.

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

Big delay of over 7 hours on next leg of trip with Alaska. Would have been nice to have food or something

We were late so that was what was worst part

Flying on Hawaiian Airlines was good. But, getting a boarding pass was a hassle. I booked what I thought was an Alaska Airlines flight that was actually a Hawaiian Airlines flight. I couldn't check in online. I had to wait for the Hawaiian Airlines counter to open so I could get my boarding pass which was a requirement for me to get in The Club or the Centurion Lounge. (I had no check in luggage so I didn't expect to have to physically check in.) The Alaska Airlines staff blamed the FAA for the problem.

Food and entertainment aren’t a thing on these regional flights. But it was a smooth flight. Could see gorgeous countryside through the large windows. The earplugs are a nice touch for the prop engines but the hum of the engines did not bother me. Grateful the option exists to easily get from A to B.

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

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

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

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

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