BIL - SFO

$129 Find Cheap Flights from Billings 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 Billings to San Francisco departing on 1/23. 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 San Francisco

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

Cheapest round-trip
$238
Typical prices: $191-$347
Alaska Airlines
Fri 1/9Tue 1/13
BIL - SFO • 1 stop
Cheapest one-way
$129
Alaska Airlines
Fri 1/23
BIL - SFO • 1 stop
When to travel
May
Cheapest • 25% price drop
May
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 San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billings 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billings to San Francisco

Fri, Jan 9 - Tue, Jan 13
Alaska Airlines Logo
3:35 pm - 7:43 pm
BIL
-
SFO
5h 08m1 stop
Alaska Airlines Logo
4:46 pm - 11:36 pm
SFO
-
BIL
5h 50m1 stop
$238Alaska Airlines
Fri, Jan 9 - Tue, Jan 13
Alaska Airlines Logo
3:35 pm - 7:43 pm
BIL
-
SFO
5h 08m1 stop
Alaska Airlines Logo
4:46 pm - 11:36 pm
SFO
-
BIL
5h 50m1 stop
$248Alaska Airlines
Sat, Jan 17 - Tue, Jan 20
Alaska Airlines Logo
3:35 pm - 7:43 pm
BIL
-
SFO
5h 08m1 stop
Alaska Airlines Logo
11:36 am - 11:36 pm
SFO
-
BIL
11h 00m2 stops
$254Alaska Airlines
Fri, Jan 9 - Tue, Jan 13
Alaska Airlines Logo
3:35 pm - 11:03 pm
BIL
-
SFO
8h 28m2 stops
Alaska Airlines Logo
2:30 pm - 11:36 pm
SFO
-
BIL
8h 06m1 stop
$266Alaska Airlines
Sat, Jan 17 - Tue, Jan 20
Alaska Airlines Logo
3:35 pm - 3:50 pm
BIL
-
SFO
25h 15m2 stops
Alaska Airlines Logo
11:36 am - 11:36 pm
SFO
-
BIL
11h 00m2 stops
$281Alaska Airlines
Fri, Apr 17 - Wed, Apr 22
Alaska Airlines Logo
3:35 pm - 7:19 pm
BIL
-
SFO
4h 44m1 stop
Alaska Airlines Logo
8:00 am - 1:15 pm
SFO
-
BIL
4h 15m1 stop
$289Alaska Airlines
Fri, Jan 9 - Tue, Jan 13
Alaska Airlines Logo
3:35 pm - 9:58 pm
BIL
-
SFO
7h 23m2 stops
Alaska Airlines Logo
11:41 am - 11:36 pm
SFO
-
BIL
10h 55m2 stops
$309Alaska Airlines
Sat, Mar 28 - Tue, Mar 31
Alaska Airlines Logo
3:35 pm - 7:19 pm
BIL
-
SFO
4h 44m1 stop
Alaska Airlines Logo
2:40 pm - 10:43 pm
SFO
-
BIL
7h 03m1 stop
$313Alaska Airlines
Thu, Apr 16 - Mon, Apr 20
Delta Logo
5:45 am - 9:09 am
BIL
-
SFO
4h 24m1 stop
Delta Logo
5:00 pm - 10:27 pm
SFO
-
BIL
4h 27m1 stop
$314Delta
Thu, Apr 16 - Mon, Apr 20
Alaska Airlines Logo
6:00 am - 12:16 pm
BIL
-
SFO
7h 16m1 stop
Alaska Airlines Logo
4:40 pm - 10:43 pm
SFO
-
BIL
5h 03m1 stop
$338Alaska Airlines
Booking Insights

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

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

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

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

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

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

If you are looking for a flight deal from Billings to San Francisco, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Francisco, Thursday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billings 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 Billings to San Francisco is May, where tickets cost $246 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $459 and $457 respectively.

Good to know

Low seasonSeptember
Cheapest flight$129
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 26% lower on average.
Flight from Billings to San Francisco

When to book flights from Billings to San Francisco

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

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

    In the last 3 days, the lowest price for a flight from Billings to San Francisco was $129 for a one-way ticket and $238 for a round-trip.

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

    No

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

    When flying out of Billings you will be using Billings Logan Intl. You will be landing at San Francisco, also known as San Francisco.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Billings to San Francisco are Alaska Airlines and Delta. With an average price for the route of $328 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $290 and an overall rating of 7.9.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Billings 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 Billings 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 Billings with another airline. Booking your flights between Billings 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 Billings 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 Billings 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 Billings to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Billings 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 Billings 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 11478 reviews
8.1Boarding
7.1Food
8.5Crew
7.8Comfort
7.0Entertainment
Airline reviews

I don’t think Alaska coordinates with Kayak. I did not get a “check-in” email inviting me to check in 24 hours in advance. Had to wait 20+ minutes to get a wheel chair.

8.0 ExcellentAnonymous, Dec 2025
JFK - SFO
Read more Alaska Airlines reviews

I don’t think Alaska coordinates with Kayak. I did not get a “check-in” email inviting me to check in 24 hours in advance. Had to wait 20+ minutes to get a wheel chair.

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

First Class seats had no more legroom then Premium Economy. There was no working WiFi or entertainment. I would have rather paid $400 more and flown on United for the 6 hours from EWR to SFO.

Overall the flight was on-time and plane ride very comfortable. The free snacks not so good - only a small bag of pretzels and no milk. I wanted milk. There was not entertainment on the plane unless I wanted to download their APP. But I would consider flying with them again and be more prepared on my part with food and entertainment.

This was more with the third party booking through Kayak but my KTN for Pre-TSA, even though I entered it, wasn't assigned to my ticket when I got to the airport. I had to go through regular security. Also the Alaska app had trouble loading my ticket in the first place and I had to ask for it to be printed. Alaska Airlines was great but wanted you to know about this hiccup in the ticketing interface.

this was the THIRD time in four Alaska flights that were 2 hours late. Only one was due to weather. The intentionally posted each flight as only 1 hour and 55 minutes late so that they wouldn't have to give out vouchers. And then the flights all ended up more than 2 hours late. Makes United look like a premium carrier.

It was fine, mostly I was just happy to be on my last leg home. No in flight entertainment but that's forgivable since it was only a 2 hour flight.

Flight was cancelled, then rebooked on a flight that I was unable to get through since they had closed the gate.

This was likely the smallest, oldest plane I've been on. It didn't handle turbulence well and we were all jostled a lot more than I'm used to. At least it was a short flight.

Boarding process was poorly handled by the gate crew and the onboard crew. No effort was made to provide equal treatment to passengers with overhead bin space. Crew seemed disengaged and unfriendly.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

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

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

Information on your arrival and departure airports