$109 Find Cheap Flights from Billings to San Francisco Bay Area

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 Bay Area departing on 3/21. 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 Bay Area

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

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San Francisco
San Francisco1 stop$217
San Jose
San Jose1 stop$244
San Francisco
San Francisco1 stop$217
San Jose
San Jose1 stop$244

Book Cheap Billings to San Francisco Bay Area Plane Tickets

 
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 Bay Area 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 Bay Area

Sat, Mar 28 - Tue, Mar 31
Delta Logo
6:21 pm - 10:15 pm
BIL
-
SFO
4h 54m
1 stop
Delta Logo
5:40 am - 10:53 am
SFO
-
BIL
4h 13m
1 stop
$217Delta
Sat, Mar 28 - Tue, Mar 31
Delta Logo
6:21 pm - 10:15 pm
BIL
-
SFO
4h 54m
1 stop
Delta Logo
6:00 am - 5:41 pm
SFO
-
BIL
10h 41m
2 stops
$235Delta
Tue, May 5 - Fri, May 8
Delta Logo
6:18 pm - 11:59 pm
BIL
-
SFO
6h 41m
1 stop
Delta Logo
4:59 pm - 10:52 pm
SFO
-
BIL
4h 53m
1 stop
$244Delta
Fri, May 8 - Wed, May 13
Delta Logo
5:35 am - 8:58 am
BIL
-
SJC
4h 23m
1 stop
Delta Logo
5:00 pm - 10:52 pm
SJC
-
BIL
4h 52m
1 stop
$244Delta
Fri, Apr 24 - Tue, Apr 28
Alaska Airlines Logo
12:49 pm - 4:46 pm
BIL
-
SFO
4h 57m
1 stop
Alaska Airlines Logo
7:40 am - 1:26 pm
SFO
-
BIL
4h 46m
1 stop
$261Alaska Airlines
Mon, Mar 2 - Mon, Mar 9
Delta Logo
6:15 pm - 11:54 pm
BIL
-
SFO
6h 39m
1 stop
Delta Logo
5:01 pm - 10:29 pm
SFO
-
BIL
4h 28m
1 stop
$271Delta
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
5:53 pm - 11:17 pm
BIL
-
SFO
6h 24m
1 stop
United Airlines Logo
6:50 am - 1:23 pm
SFO
-
BIL
5h 33m
1 stop
$287United Airlines
Tue, Mar 3 - Tue, Mar 10
Alaska Airlines Logo
7:00 am - 1:42 pm
BIL
-
SJC
7h 42m
1 stop
Alaska Airlines Logo
7:40 am - 1:24 pm
SJC
-
BIL
4h 44m
1 stop
$291Alaska Airlines
Fri, Apr 24 - Tue, Apr 28
Alaska Airlines Logo
12:49 pm - 4:46 pm
BIL
-
SFO
4h 57m
1 stop
Alaska Airlines Logo
7:15 am - 10:59 pm
SFO
-
BIL
14h 44m
2 stops
$292Alaska Airlines
Wed, Feb 25 - Sat, Feb 28
United Airlines Logo
2:35 pm - 9:05 pm
BIL
-
SJC
7h 30m
1 stop
United Airlines Logo
8:50 am - 5:12 pm
SJC
-
BIL
7h 22m
1 stop
$344United Airlines
Booking Insights

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

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

Can I save money by flying with a layover from Billings to San Francisco Bay Area?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $256, prices are generally cheapest when you fly direct.

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

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 Bay Area, 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 Bay Area is September, when tickets cost $254 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $457 and $385 respectively.

Good to know

Low seasonSeptember
Cheapest flight$109
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Billings to San Francisco

FAQs - booking San Francisco Bay Area flights

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

    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 Bay Area.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Billings to San Francisco Bay Area 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 Bay Area?

    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 from Billings to San Francisco Bay Area with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Billings to San Francisco Bay Area?

    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 from Billings to San Francisco Bay Area 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 Bay Area

 
See real verified KAYAK customer reviews for airlines flying from Billings to San Francisco Bay Area. 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 Bay Area? 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 11839 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.1Food
7.0Entertainment
Airline reviews

The he whole flight was very smooth on every aspects.

10.0 ExcellentPhilip, Feb 2026
SFO - SAN
Read more Alaska Airlines reviews

The he whole flight was very smooth on every aspects.

Flight cancelled and deplaned. Rescheduled 8 hours later at a different airport. Ended up at destination but late.

Alaska used to be a top notch airline. With it's growth it is now in line with the big airlines. Not bad, not great.

Due to plane delays on both legs of my flight home, I had to be rerouted from Santa Rosa to Las Vegas on Skywest and then to DCA on American. SkyWest airlines sat on runway in Las Vegas for 20 minutes waiting for gate to clear. My boarding pass for American that I was given by Alaska was incomplete and the Las Vegas airport lacked signage and departure boards. I barely made my flight bc it was so confusing. American Airlines has a much better wireless connection. I’ll never fly Alaska again. It clearly has problems.

Great. I did have a little issue getting into the Lounge, which is likely more an American Airlines issue. I did not carry my physical AAdvantage Executive credit card with me on this trip, which Admirals Club membership is a part of the benefits of having this card. The instructions on the AA website and the Citi cards website make it seem like you don't need the physical card, as both sites state you can enter with your boarding pass and driver's license. But both lounges said you were required to present the physical card (and not the digital version, via Apple Pay), as only the physical card says "Admirals Club" on the back.I also do not have a physical Admirals Club membership card, so while both lounges eventually let me in, both denied me entrance initially for this reason.

I paid for wifi and it never worked... it was miserable. I couldn't access my shared files to work on the plane, it didn't work on my phone. I paid for nothing but frustration and continual refreshing, hoping it would work

We left about 30 minutes late due to ramp issues. It did not impact me, but I know others on the flight had very tight connections to Maui.

Everything from the time I booked my flight through to the end when I got home was smooth and wonderful. Service was great, the flight attendants were attentive and there were no outstanding delays.

Delayed and no entertainment? I also forgot my headphones and immediately reported it and have not heard back yet.

The crew was very friendly. Boarding was quick and efficient.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

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.

Everything you need to know for your flight to San Francisco Bay Area

Information on your arrival and departure airports