BIL - SFO

$181 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 9/15. 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
$315
Typical prices: $396-$432
Multiple Airlines
Thu 7/9Wed 7/15
BIL - SFO • 1 stop
Cheapest one-way
$181
Typical prices: $209-$228
Alaska Airlines
Tue 9/15
BIL - SFO • 1 stop
Top airlines
Cheapest • from $355 (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 Billings and San Francisco. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $288 (round-trip)
Shortest trip • 4h 54m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% 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 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

Thu, Jul 9 - Wed, Jul 15
Multiple Airlines Logo
5:56 pm - 4:11 pm
BIL
-
SFO
23h 15m
1 stop
Multiple Airlines Logo
10:23 pm - 9:14 am
SFO
-
BIL
33h 51m
2 stops
$315Multiple Airlines
Thu, Jul 9 - Wed, Jul 15
Multiple Airlines Logo
5:56 pm - 4:11 pm
BIL
-
SFO
23h 15m
1 stop
Multiple Airlines Logo
10:23 pm - 9:14 am
SFO
-
BIL
33h 51m
2 stops
$323Multiple Airlines
Thu, Jul 23 - Sun, Jul 26
Multiple Airlines Logo
5:56 pm - 4:11 pm
BIL
-
SFO
23h 15m
1 stop
Multiple Airlines Logo
9:00 pm - 9:09 am
SFO
-
BIL
11h 09m
1 stop
$330Multiple Airlines
Sat, Oct 31 - Tue, Nov 3
Alaska Airlines Logo
6:01 am - 12:26 pm
BIL
-
SFO
7h 25m
1 stop
Alaska Airlines Logo
11:39 am - 2:52 pm
SFO
-
BIL
26h 13m
1 stop
$355Alaska Airlines
Tue, Nov 3 - Wed, Nov 4
Alaska Airlines Logo
5:12 pm - 9:35 pm
BIL
-
SFO
5h 23m
1 stop
Alaska Airlines Logo
10:32 am - 4:32 pm
SFO
-
BIL
5h 00m
1 stop
$357Alaska Airlines
Tue, Nov 3 - Wed, Nov 4
Alaska Airlines Logo
5:12 pm - 9:00 am
BIL
-
SFO
16h 48m
2 stops
Alaska Airlines Logo
2:56 pm - 10:43 pm
SFO
-
BIL
6h 47m
1 stop
$360Alaska Airlines
Tue, Nov 3 - Wed, Nov 4
Alaska Airlines Logo
5:12 pm - 9:35 pm
BIL
-
SFO
5h 23m
1 stop
Alaska Airlines Logo
10:32 am - 4:32 pm
SFO
-
BIL
5h 00m
1 stop
$361Alaska Airlines
Thu, Oct 15 - Wed, Oct 21
Alaska Airlines Logo
7:32 pm - 11:44 pm
BIL
-
SFO
5h 12m
1 stop
Alaska Airlines Logo
9:00 am - 3:04 pm
SFO
-
BIL
5h 04m
1 stop
$367Alaska Airlines
Tue, Nov 3 - Wed, Nov 4
Alaska Airlines Logo
5:12 pm - 9:00 am
BIL
-
SFO
16h 48m
2 stops
Alaska Airlines Logo
2:56 pm - 10:43 pm
SFO
-
BIL
6h 47m
1 stop
$372Alaska Airlines
Sat, Oct 31 - Tue, Nov 3
Alaska Airlines Logo
6:01 am - 12:26 pm
BIL
-
SFO
7h 25m
1 stop
Alaska Airlines Logo
8:35 am - 10:43 pm
SFO
-
BIL
13h 08m
2 stops
$378Alaska 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 July.

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 September, where tickets cost $254 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $488 and $457 respectively.

Good to know

Low seasonSeptember
Cheapest flight$181
Best time to beat the crowds with an average 31% 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 5 days, the lowest price for a flight from Billings to San Francisco was $181 for a one-way ticket and $315 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?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Billings and San Francisco, with Star Alliance 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 $306 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 $377 and an overall rating of 7.8.

  • 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 3 airlines serving 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.
7.9
Alaska AirlinesOverall score based on 12539 reviews
8.1Boarding
8.5Crew
7.8Comfort
7.0Entertainment
7.0Food
Airline reviews

Terrible experience with an extremely obese passenger seated directly behind me - who snored and gagged so loudly, even throughout takeoff, that no one within ten rows could have gotten any rest even with earplugs! I get that this poor person has a serious health issue, and that Alaska (maybe) had no way to prepare in advance (though he did occupy two seats). Still there must be a way to take a six-hour flight without feeling like I'm next to a roaring grizzly bear.

2.0 MediocreAnonymous, May 2026
EWR - SFO
Read more Alaska Airlines reviews

Terrible experience with an extremely obese passenger seated directly behind me - who snored and gagged so loudly, even throughout takeoff, that no one within ten rows could have gotten any rest even with earplugs! I get that this poor person has a serious health issue, and that Alaska (maybe) had no way to prepare in advance (though he did occupy two seats). Still there must be a way to take a six-hour flight without feeling like I'm next to a roaring grizzly bear.

It might not have been their fault, but there was a two hour delay due to weather. Then we boarded and were about to leave when they said there were more problems at the destination, took us back to the gate where we had to fully deplane. But then five minutes later, they said everything was fine and to get back on the plane. This was the part that pissed everybody off.

The check-in crew for Alaska was rude, unhelpful, and the opposite of customer-centric. We arrived 50 minutes before our flight and were told it was too late to check baggage. When I asked what the cutoff was, the agent started speaking in codes “D50” and yelling to their manager who also spoke in codes. They then tried to speak to me using these codes and all I wanted to know was the time of the cutoff, which they would not — or could not — articulate. They booked me and my family on the next flight while smirking.

Generally Good. Outbound flight was marred by a continuously s creaming baby. Fortunately the flight was only 90 mins long it would be nice if people traveling with small childres could be centered in one part of the plane. Also, you need to adapt your servey to include a "not applicable " option for things like food and entertainment, which are not offered on shorter flights. I fily Alaska by choice as given all the cirumstances, I fel\el you do a good job.

i canceled my flight from SEA to SFO, SNA to SEA and received full refund from Alaska Airlines. i am pleased with the customer service.

i canceled my return flight package with Alaska Airlines. Customer Service was excellent and assisted me to cancelled both of our reservations and returned the payment in full. that is excellent service and understanding and empathy of the customers' needs. i like Alaska Airlines and recommend AS to everyone.

Representatives both at the gate and on the plane have zero interest in helping you! It’s really unfortunate…

I was in economy class and there was plenty of leg room. New interior which was nice and they served various kinds of chips and sodas on the red eye. You couldn't get a bottle of water but they instead served it in a medium paper cup from a reinforced structured paper container, environmental friendly.

Great experience, staff and crew were very professional, friendly and helpful!

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

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

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

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

Information on your arrival and departure airports