SFO - BIL

$237 Find Cheap Flights from San Francisco to Billings

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Billings departing on 3/25. 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.
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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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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

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Francisco to Billings.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:11 pm - 12:16 amSFO-BIL
4h 05m1 stop
5:20 am - 9:14 amBIL-SFO
4h 54m1 stop
$237Delta
Find Deal
Tue, Mar 25 - Wed, Mar 26
1:45 pm - 12:16 amSFO-BIL
9h 31m2 stops
6:26 pm - 11:59 pmBIL-SFO
6h 33m1 stop
$242Delta
Find Deal
Tue, Mar 25 - Wed, Mar 26
7:00 pm - 12:16 amSFO-BIL
4h 16m1 stop
5:45 am - 9:12 amBIL-SFO
4h 27m1 stop
$283Delta
Find Deal
Tue, May 20 - Wed, May 28
8:00 am - 3:07 pmSFO-BIL
6h 07m1 stop
3:47 pm - 7:40 pmBIL-SFO
4h 53m1 stop
$287Alaska Airlines
Find Deal
Thu, May 1 - Thu, May 8
5:00 am - 1:23 pmSFO-BIL
7h 23m1 stop
2:45 pm - 8:54 pmBIL-SFO
7h 09m1 stop
$306United Airlines
Find Deal
Fri, Mar 21 - Sun, Mar 23
5:49 pm - 11:59 pmSFO-BIL
5h 10m1 stop
7:24 pm - 11:44 pmBIL-SFO
5h 20m1 stop
$328Alaska Airlines
Find Deal
Sun, May 25 - Thu, May 29
2:27 pm - 10:39 pmSFO-BIL
7h 12m1 stop
5:51 pm - 11:03 pmBIL-SFO
6h 12m1 stop
$444United Airlines
Find Deal
Sun, Jul 20 - Sun, Jul 27
5:49 pm - 11:59 pmSFO-BIL
5h 10m1 stop
3:45 pm - 7:45 pmBIL-SFO
5h 00m1 stop
$537Hawaiian Airlines
Find Deal
Fri, May 23 - Tue, May 27
12:47 am - 1:28 pmSFO-BIL
11h 41m1 stop
1:58 pm - 8:20 pmBIL-SFO
7h 22m1 stop
$676American Airlines
Find Deal
Wed, Apr 30 - Thu, May 8
12:45 am - 11:59 amSFO-BIL
10h 14m1 stop
6:15 am - 5:52 pmBIL-SFO
12h 37m1 stop
$714American Airlines
Find Deal
Sat, Jul 19 - Thu, Jul 24

Flights from San Francisco to Billings - Travel Insights & Trends

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 April, where tickets cost $328 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $549 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 11 weeks before departure.

Good to know

Low season

January

High season

July

Cheapest flight

$237
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 17% 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 $237 for a round-trip ticket.

  • 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 $420 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 $480 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.

See more FAQs

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 9702 reviews
8.5Crew
7.1Food
7.9Comfort
8.2Boarding
7.1Entertainment
Airline reviews

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.

2.0 MediocreAnonymous, Feb 2025SFO - BUR
Read more Alaska Airlines reviews

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.

When we checked in our luggage, we had to use the tray, but include this tray is extra weight. I think you should not use the tray.

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.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

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

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

Not enough room between rows and food was gross. $160 baggage charge?! Never again.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

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

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