SFO - BIL

$114 Find Cheap Flights from San Francisco to Billings - Compare and Save

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 10/29. 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

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Everything you should know

Cheapest round-trip
$195
Typical prices: $254-$302
Multiple Airlines
Thu 9/17Mon 9/21
SFO - BIL • 1 stop
Cheapest one-way
$114
Multiple Airlines
Thu 10/29
SFO - BIL • 2 stops
Top airlines
Cheapest • from $313 (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 Billings. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $482 (round-trip)
Shortest trip • 4h 38m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 45% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Billings!
Flight Deals
Booking Insights
Flight 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

Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
10:24 pm - 4:21 pm
SFO
-
BIL
16h 57m
1 stop
Multiple Airlines Logo
5:22 pm - 8:14 am
BIL
-
SFO
15h 52m
1 stop
$195Multiple Airlines
Thu, Sep 24 - Mon, Sep 28
Multiple Airlines Logo
10:24 pm - 4:21 pm
SFO
-
BIL
16h 57m
1 stop
Multiple Airlines Logo
5:22 pm - 6:24 pm
BIL
-
SFO
26h 02m
1 stop
$208Multiple Airlines
Thu, Sep 24 - Mon, Sep 28
Multiple Airlines Logo
8:24 pm - 4:21 pm
SFO
-
BIL
18h 57m
1 stop
Multiple Airlines Logo
5:22 pm - 8:14 am
BIL
-
SFO
15h 52m
1 stop
$208Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
9:00 am - 4:21 pm
SFO
-
BIL
30h 21m
2 stops
Multiple Airlines Logo
5:22 pm - 8:14 am
BIL
-
SFO
15h 52m
1 stop
$230Multiple Airlines
Tue, Sep 8 - Sat, Sep 12
Alaska Airlines Logo
6:59 pm - 3:02 pm
SFO
-
BIL
19h 03m
1 stop
Alaska Airlines Logo
6:14 am - 10:59 am
BIL
-
SFO
5h 45m
1 stop
$313Alaska Airlines
Wed, Sep 9 - Sat, Sep 12
Alaska Airlines Logo
4:51 pm - 11:29 pm
SFO
-
BIL
5h 38m
1 stop
Alaska Airlines Logo
6:14 am - 10:59 am
BIL
-
SFO
5h 45m
1 stop
$313Alaska Airlines
Wed, Nov 4 - Sat, Nov 7
Alaska Airlines Logo
6:05 am - 4:32 pm
SFO
-
BIL
9h 27m
1 stop
Alaska Airlines Logo
3:32 pm - 7:48 pm
BIL
-
SFO
5h 16m
1 stop
$313Alaska Airlines
Thu, Nov 12 - Sat, Nov 14
Delta Logo
6:00 am - 5:48 pm
SFO
-
BIL
10h 48m
2 stops
Delta Logo
12:58 pm - 11:31 pm
BIL
-
SFO
11h 33m
2 stops
$343Delta
Sat, Sep 12 - Tue, Sep 15
Delta Logo
5:19 pm - 10:41 pm
SFO
-
BIL
4h 22m
1 stop
Delta Logo
5:20 am - 9:00 am
BIL
-
SFO
4h 40m
1 stop
$345Delta
Sat, Sep 12 - Sat, Sep 19
Delta Logo
5:45 am - 12:17 pm
SFO
-
BIL
5h 32m
1 stop
Delta Logo
6:33 pm - 11:01 pm
BIL
-
SFO
5h 28m
1 stop
$345Delta
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Billings departing in September.

Flight prices are below average for this route right now.

Flights to Billings from San Francisco usually cost between $348 and $563 in September.
The lowest price found in the past 5 days was $195 on Multiple Airlines (Sep 17-Sep 21).

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 February, where tickets cost $258 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $614 and $575 respectively.

Good to know

Low season

January

Cheapest flight

$114
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 9% 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 5 days, the lowest price for a flight from San Francisco to Billings was $114 for a one-way ticket and $195 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?

    oneworld, and SkyTeam 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, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from San Francisco to Billings are Alaska Airlines and Delta. With an average price for the route of $563 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $403 and an overall rating of 7.8.

  • 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 airlines flying 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.
7.9
Alaska AirlinesOverall score based on 12726 reviews
8.1Boarding
7.0Food
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

The plane was freezing. A few other customers mentioned how they can’t get their temperature right on their flights lately.

6.0 GoodKatherine, Jul 2026
SFO - SNA
Read more Alaska Airlines reviews

The plane was freezing. A few other customers mentioned how they can’t get their temperature right on their flights lately.

The food was fine, I was in economy so wasn’t expecting more. Would have liked an entree like pasta/lasagna. Entertainment/movies were ok. I have Apple TV & HBO so I was searching for new releases. But these are just my preferences for food & entertainment. The flight was good. I like the design of your seat backs/tray tables with the extra cup holder and screen holders

Quick, easy, on time. I couldn't ask for more great staff

The app booked me on a flight for July 1st as opposed to August 1st like it was supposed to be. No problem with Alaska Airlines, except they took a while to refund my money. But it was as taken instantly. So, yeah.

Not able to get boarding pass for domestic connection flight when check in at international airport. I was told I need to get connection flight boarding pass after I entered US. It us very inconvenient.

The flight 2161 was cancelled after repeated delays; for some reason the crew and not the tower located in Billings, Montana made the call. A cancelled flight is not a big deal, it happens. It was very disappointing that upon cancelling the flight it was a free for all to get to the counter for rebooking. Priority seating and first class ticket holders should have been giving priority to get on the next available flight. Most would agree that the process of moving states away, w/a cat, is stressful. A cancelled flight, 90 minutes to rebook, no place to stay, medication that was to be refrigerated and trying to find a local pet friendly hotel significantly added to the stress. Had I been able to rebook (per priority boarding SOP) I could have called the place I had just checked out of as my room most likely was just as I'd left it, including with pet supplies (which also had to be repurchased). While waiting to rebook, many of us called Alaska Airlines 800 number hoping to get a new flight; the waiting time -- this is not a joke -- was eight (8) hours, which dropped to "just" two (2) hours about 45-minutes later. Due to the cancellation I had to spend $268.75 and I still have not been refunded for the change in ticket (first class to regular). Each time I've call, five times now, the wait time was absurd, or a message of call back is given. Hopefully visiting the airport and talking with an agent face to face will be the final chapter to this experience. Alaska has been my go to air travel for years, hopefully this trip was just a hiccup. A system that forces customer's to spend hours of their time (money) to get a just due refund is not a working system. I suggest Alaska Airlines hire more representatives to handle calls; time is more valuable than money, spending 90 minutes to rebook a flight, without the difference being automatic is absurd. There are things called computers, they do amazing things. Once the flight was cancelled, only three agents were working to rebook the PAX, This too was unacceptable. First class ticket holders pay for first-class service, this should include rebooking on flights that are cancelled. I recall a time when flights were cancelled the airline would offer a hotel should the next flight not be until the following day? I had no idea that was no longer SOP; many could return home, several of us could not. The agents were pleasant once the PAX had their turn to rebook, this was true down in baggage area as well. The flight out the next day was also what I'd come to find of Alaska Airlines.

Wheelchair assistance was provided in Seattle and was very gratefully accepted. Thank you to the Alaska staff.

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.

The cold air vent in our seat isle had a leak in the overhead panel (10 C&D). On the ground and part of the flight After take off and before landing in Billings. We had very cold air blow on us.

I think everything was just fine I wouldn't change nothing

Crew was absolutely fantastic and we’re so welcoming and friendly ❤️

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

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

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

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

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

Information on your arrival and departure airports