BUF - SFO

C$ 125 Find Cheap Flights from Buffalo 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 Buffalo to San Francisco departing on 7/6. 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 Buffalo 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 Buffalo to San Francisco, as well as popular online travel agencies
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Cheap Flight Deals from Buffalo to San Francisco (BUF-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo 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.

Recent round-trip flight deals from Buffalo to San Francisco

KAYAK's recommended round-trip deals from the most popular airlines that fly from Buffalo to San Francisco.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Frontier Logo
3:51 p.m. - 10:22 p.m.BUF-SFO
9h 31m1 stop
Frontier Logo
9:59 p.m. - 9:01 a.m.SFO-BUF
32h 02m1 stop
C$ 274Frontier
Find Deal
Thu, 8 May - Tue, 13 May
United Airlines Logo
7:55 p.m. - 12:58 a.m.BUF-SFO
8h 03m1 stop
United Airlines Logo
11:15 p.m. - 9:56 a.m.SFO-BUF
7h 41m1 stop
C$ 366United Airlines
Find Deal
Mon, 2 Jun - Tue, 3 Jun
Frontier Logo
3:45 p.m. - 10:22 p.m.BUF-SFO
9h 37m1 stop
Frontier Logo
11:45 p.m. - 2:51 p.m.SFO-BUF
12h 06m1 stop
C$ 375Frontier
Find Deal
Sun, 4 May - Wed, 7 May
 Logo
3:51 p.m. - 10:22 p.m.BUF-SFO
9h 31m1 stop
 Logo
11:59 p.m. - 10:44 a.m.SFO-BUF
7h 45m1 stop
C$ 378
Find Deal
Thu, 15 May - Sun, 10 Aug
Delta Logo
6:30 a.m. - 10:25 a.m.BUF-SFO
6h 55m1 stop
Delta Logo
6:15 a.m. - 6:41 p.m.SFO-BUF
9h 26m1 stop
C$ 384Delta
Find Deal
Sun, 15 Jun - Wed, 18 Jun
Delta Logo
5:55 p.m. - 10:38 p.m.BUF-SFO
7h 43m1 stop
Delta Logo
5:50 a.m. - 5:09 p.m.SFO-BUF
8h 19m1 stop
C$ 413Delta
Find Deal
Fri, 23 May - Sun, 25 May
Southwest Logo
4:10 p.m. - 11:20 p.m.BUF-SFO
10h 10m1 stop
Southwest Logo
4:45 p.m. - 7:55 a.m.SFO-BUF
12h 10m2 stops
C$ 442Southwest
Find Deal
Thu, 4 Sep - Sat, 6 Sep
Southwest Logo
7:55 a.m. - 2:25 p.m.BUF-SFO
9h 30m1 stop
Southwest Logo
6:20 p.m. - 8:10 a.m.SFO-BUF
10h 50m2 stops
C$ 460Southwest
Find Deal
Thu, 2 Oct - Mon, 6 Oct
United Airlines Logo
6:00 a.m. - 2:09 p.m.BUF-SFO
11h 09m1 stop
United Airlines Logo
12:10 a.m. - 10:12 a.m.SFO-BUF
7h 02m1 stop
C$ 591United Airlines
Find Deal
Wed, 7 May - Mon, 12 May
American Airlines Logo
10:16 a.m. - 2:55 p.m.BUF-SFO
7h 39m1 stop
American Airlines Logo
11:59 p.m. - 9:41 a.m.SFO-BUF
6h 42m1 stop
C$ 863American Airlines
Find Deal
Sun, 4 May - Sun, 4 May

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

Get data-powered insights and trends into flights from Buffalo to San Francisco 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 Buffalo to San Francisco?

The average price of all round-trip flights from Buffalo to San Francisco clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to San Francisco on a Wednesday and more expensive on a Sunday. On your return trip to Buffalo, you should consider flying back on a Monday, and avoid Tuesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo 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 Buffalo to San Francisco is January, where tickets cost C$ 447 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 577 and C$ 569 respectively.

How far in advance should I book a flight from Buffalo to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Buffalo to San Francisco, 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 Buffalo to San Francisco, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

C$ 125
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Buffalo to San Francisco

When to book flights from Buffalo to San Francisco

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

  • Does BUF have a pet relief area?

    BUF has a pet relief area on the lower level of the main terminal next to the terminal exit. It should be noted that pets are only permitted inside the airport's grounds if they are contained in approved animal crates.

  • Where is the USO military lounge located in SFO?

    The USO military lounge is located on the mezzanine level of Terminal 1. It features comfortable seats, clean restrooms, a snack bar, and complimentary magazines. The lounge is only open to serving members of the US military and their families. It is accessible via the elevators behind the Delta Airlines ticket counter.

  • How can I get assisted travel services on my flight from BUF to SFO?

    All the airlines that offer flights from BUF to SFO offer disabled travelers assisted travel services. If you’re one such traveler, you can get the assisted travel services you require if you inform the airline you intend to travel with in advance. Ideally, you should inform the airline when booking your flight ticket or at least 24 hours prior to your flight.

  • Can I breastfeed at SFO?

    Traveling mothers who wish to breastfeed or tend to their babies at SFO can do so with ease, given that this airport features numerous private and comfortable nursing rooms. These nursing rooms can be found in all terminals near the family restrooms. Mothers are urged to look for the nursery and family restroom signs and use the black courtesy phones next to the entrance to request access.

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

    In the last 3 days, the lowest price for a flight from Buffalo to San Francisco was C$ 90 for a one-way ticket and C$ 198 for a round-trip.

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

    Buffalo airport is called Buffalo and the only airport in San Francisco is San Francisco.

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

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

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

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

  • Which is the best airline for flights from Buffalo to San Francisco, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from Buffalo to San Francisco are Delta and Southwest. With an average price for the route of C$ 455 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of C$ 656 and an overall rating of 8.0.

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo 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 Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Buffalo to San Francisco

  • Buffalo Niagara International Airport (BUF) is the primary airport serving Buffalo. It is located in Cheektowaga, 11 miles east of downtown Buffalo. San Francisco International Airport (SFO) is the primary aviation gateway into San Francisco. It is located in San Mateo, 13 miles south of downtown San Francisco. It serves as a hub for United Airlines, Alaska Airlines, and SkyWest Airlines.
  • Take advantage of BUF's elite Club Lounge if you need a quiet place to relax before your flight. The lounge is located in the main Terminal between Gate 6 and Gate 9 and can be accessed by paying an entrance fee at the door.
  • In case you are traveling with children, take them to the children's play area at BUF. The Fisher-Price branded children's play area is located in the main terminal directly across from Gate 19. It features modern children's play equipment, including toys and slides, and an adult seating area with power outlets.
  • Travelers Aid, a non-profit organization, has teamed up with SFO to help passengers who are in distress or stranded at the airport. Volunteers from the organization assist travelers in emergencies, such as finding emergency accommodation or transportation. They have offices in Terminal 1 opposite Door 6 and Terminal 3 opposite Yankee Pier Restaurant.
  • If you arrive at SFO feeling stressed or anxious, look for the Wag Brigade. The Wag Brigade is a group of trained therapy dogs that roam the airport comforting passengers. You are welcome to cuddle and pet these animals as they will reciprocate the affection.
See more tips

Top 5 airlines serving from Buffalo to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Buffalo 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 Buffalo 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
SouthwestOverall score based on 4287 reviews
8.0Comfort
8.6Crew
7.6Entertainment
8.2Boarding
7.1Food
Airline reviews

It was a perfect flight in all aspects! Both legs!

10.0 ExcellentAnonymous, Apr 2025LGB - SMF
Read more Southwest reviews

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

Rough day of travel all the way around. Wrong info given to us multiple times and mistakes in their booking making our trip 10 hours longer than planned. I’m bummed because I fly Delta all the time and love them. Mistakes happen. Just bummed that this was a rare trip our whole family was traveling together.

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

AA is always pretty solid. Was on time all the way around today so can’t complain!

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

Everything went as planned. Crew was great. Seats were still not that comfortable.

Since they are a budget airline, I wasn’t expecting too much but they did some things well. They were on time, the plane was clean, boarding was fairly straightforward and the staff was cheerful and friendly. The only downside was comfort. The seats were fairly hard and after a 2 hour flight your rear end is not feeling so great. Maybe a little more cushion in the seats, Frontier!

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

The flight left over two hours late. They charged me $180 to bring a carry on. There was an error with the spelling of my name and Frontair agent lied that I would need to pay $200 for her to fix the spelling, and pressured me that if I don't do it quick I would lose the flight. I called back and another agent said it costs $75 to fix. All in all, this company is a complete scam.

I took my first and last flight with FRONTIER. The seats are not able to be reclined so it’s not a very comfortable experience when you take a flight of 3 hours or longer. You must pay for your luggage either carry on or check in, so taking all this in consideration at the end what you think you’re saving your paying in services that should be included. Not a beverage in sight. . You’re seriously better off getting on a proper airline such as Delta, AA, United, etc.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

I was surprised that all baggage, including carry on, were charged. Each additional bag went up in cost. Really disappointed in the additional costs.

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

Information on your arrival and departure airports

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