SFO - BIL

$123 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 5/27. 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

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 Flight Deals 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.

Recent round-trip flight deals from San Francisco to Billings

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Francisco to Billings.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
5:05 pm - 12:19 amSFO-BIL
6h 14m1 stop
Delta Logo
5:20 am - 9:22 amBIL-SFO
5h 02m1 stop
$245Delta
Find Deal
Fri, Jun 6 - Thu, Jun 12
Delta Logo
5:05 pm - 10:49 pmSFO-BIL
4h 44m1 stop
Delta Logo
5:20 am - 11:40 amBIL-SFO
7h 20m2 stops
$250Delta
Find Deal
Sat, Jun 7 - Wed, Jun 11
Hawaiian Airlines Logo
8:00 am - 1:24 pmSFO-BIL
4h 24m1 stop
Hawaiian Airlines Logo
3:43 pm - 7:49 pmBIL-SFO
5h 06m1 stop
$284Hawaiian Airlines
Find Deal
Fri, Sep 19 - Fri, Sep 26
Delta Logo
7:24 pm - 12:12 amSFO-BIL
3h 48m1 stop
Delta Logo
5:20 am - 9:22 amBIL-SFO
5h 02m1 stop
$285Delta
Find Deal
Wed, Jun 25 - Sun, Jun 29
Delta Logo
7:24 pm - 12:12 amSFO-BIL
3h 48m1 stop
Delta Logo
5:20 am - 12:52 pmBIL-SFO
8h 32m2 stops
$290Delta
Find Deal
Wed, Jun 25 - Sun, Jun 29
Alaska Airlines Logo
8:58 am - 11:59 pmSFO-BIL
14h 01m2 stops
Alaska Airlines Logo
7:24 pm - 7:39 amBIL-SFO
13h 15m2 stops
$333Alaska Airlines
Find Deal
Wed, Jun 4 - Mon, Jun 9
Alaska Airlines Logo
8:00 am - 1:24 pmSFO-BIL
4h 24m1 stop
Alaska Airlines Logo
3:43 pm - 11:59 pmBIL-SFO
9h 16m2 stops
$345Alaska Airlines
Find Deal
Fri, Sep 19 - Fri, Sep 26
United Airlines Logo
8:25 am - 9:57 pmSFO-BIL
12h 32m2 stops
United Airlines Logo
5:00 am - 3:01 pmBIL-SFO
11h 01m2 stops
$508United Airlines
Find Deal
Fri, Jun 6 - Wed, Jun 11
American Airlines Logo
12:53 am - 1:28 pmSFO-BIL
11h 35m1 stop
American Airlines Logo
6:01 am - 5:54 pmBIL-SFO
12h 53m1 stop
$570American Airlines
Find Deal
Fri, Jul 18 - Fri, Jul 25
American Airlines Logo
12:53 am - 1:28 pmSFO-BIL
11h 35m1 stop
American Airlines Logo
6:38 am - 5:52 pmBIL-SFO
12h 14m1 stop
$605American Airlines
Find Deal
Fri, Jul 11 - Wed, Jul 16
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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.

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 $294 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $548 and $517 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. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonSeptember
High seasonJuly
Cheapest flight$123
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 4% 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 $123 for a one-way ticket and $245 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 $394 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 $526 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.

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 9968 reviews
8.2Boarding
8.5Crew
7.1Food
7.1Entertainment
7.9Comfort
Airline reviews

No non-alcoholic drinks available except water and small apple juice cans.

8.0 ExcellentJohn, Apr 2025SFO - LAS
Read more Alaska Airlines reviews

No non-alcoholic drinks available except water and small apple juice cans.

The flight was delayed over two and a half hours thus causing me to miss my best friend’s funeral. All because the flight crew had to get more rest. That was the reason stated. I understand however very unfortunate. Glad everyone is well rested and resting in peace.

All good except both the outbound and return flights were delayed about 1 1/2 hrs.

Not great. My flight was canceled due to a mechanical problem and I could not get rebooked for the same day. I needed to get to my destination yesterday, not today. I was able to book with another airline but it was a layover and ultimately a 1 hour flight took me 12 hours. Normally I like Alaska much more than Southwest, but Southwest came through with a not terrible price for same day.

The plane was late arriving. The Alaska people did a great job of turning it around quickly and getting us off. We took off about 35 minutes after it reached the gate.

I liked the flight attendant named Tyler. He was charismatic and genuine. I like the pilot in my second flight, he was considerate to everyone’s feelings. I liked the people I sat beside. I like the plane size. I like Alaska airlines

Flight delay was inconvenient and exhausting getting in at 1 am. However the crew and lounge was very comfortable.

No complaints. Great service. A first class entry lane at boarding wouldn’t hurt.

I appreciate the priority for safety. I did not enjoy how the delays were handled.

Awful . Extra charge on my bags even after it was confirmed it wasn’t overweight.

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

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

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

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

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

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