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Cheap flights from Buffalo to San Francisco from C$ 171

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SFO
11 Jun — 18 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to San Francisco
Explore the most affordable flight options available from Buffalo to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 May 2026.

Thu 28/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Mon 1/610:05 p.m.
SFO
-
BUF
1 stop9h 36m
Frontier
Deal found 7/5C$ 362
Tue 9/66:29 a.m.
BUF
-
SFO
1 stop7h 00m
Delta
Wed 10/66:00 a.m.
SFO
-
BUF
1 stop9h 50m
Delta
Deal found 10/5C$ 427
Fri 25/97:35 p.m.
BUF
-
SFO
1 stop7h 10m
Delta
Mon 28/911:45 p.m.
SFO
-
BUF
1 stop8h 30m
Delta
Deal found 12/5C$ 428
Thu 28/58:00 p.m.
BUF
-
SFO
1 stop7h 20m
Southwest
Mon 1/67:15 p.m.
SFO
-
BUF
2 stops9h 35m
Southwest
Deal found 7/5C$ 435
Sat 29/82:51 p.m.
BUF
-
SFO
1 stop11h 08m
American Airlines
Sat 5/910:10 p.m.
SFO
-
BUF
1 stop9h 08m
American Airlines
Deal found 8/5C$ 440
Thu 10/912:09 p.m.
BUF
-
SFO
1 stop10h 15m
Delta
Mon 14/911:45 p.m.
SFO
-
BUF
1 stop8h 30m
Delta
Deal found 8/5C$ 442
Wed 26/812:00 p.m.
BUF
-
SFO
2 stops10h 05m
Southwest
Tue 1/911:05 p.m.
SFO
-
BUF
1 stop13h 20m
Southwest
Deal found 8/5C$ 457
Mon 31/87:59 p.m.
BUF
-
SFO
1 stop8h 00m
United Airlines
Sat 5/910:35 p.m.
SFO
-
BUF
1 stop7h 33m
United Airlines
Deal found 8/5C$ 464
Thu 25/67:27 p.m.
BUF
-
SFO
1 stop8h 18m
Delta
Sat 4/710:55 p.m.
SFO
-
BUF
1 stop6h 28m
Delta
Deal found 11/5C$ 473
Thu 6/87:10 p.m.
BUF
-
SFO
1 stop7h 55m
Southwest
Mon 10/811:40 p.m.
SFO
-
BUF
1 stop8h 40m
Southwest
Deal found 10/5C$ 480
Fri 4/94:30 p.m.
BUF
-
SFO
1 stop9h 09m
Delta
Tue 15/94:15 p.m.
SFO
-
BUF
2 stops13h 08m
Delta
Deal found 8/5C$ 483
Thu 4/611:36 a.m.
BUF
-
SFO
1 stop11h 21m
Frontier
Thu 11/610:10 p.m.
SFO
-
BUF
1 stop12h 45m
Frontier
Deal found 7/5C$ 485

Find flight deals from Buffalo to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 May 2026.

Round-trip from

C$ 362

One-way from

C$ 171

Popular in

March

Cheapest in

January

Average price

C$ 473
Frontier
  • Frontier
  • 28/5-1/6
  • 2 total stops
  • 20h 34m total
  • Buffalo to San Francisco
Search Deals
Frontier
  • Frontier
  • 4/6
  • 1 total stop
  • 11h 21m total
  • Buffalo to San Francisco
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 May 2026.
Use the filters below to find and compare flights from Buffalo to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Tue 9/6

6:29 a.m.-10:29 a.m.

1 stop7h 00m

San Francisco

Wed 10/6

6:00 a.m.-6:50 p.m.

1 stop9h 50m

C$ 427
Quickest round-trip

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Sun 7/6

6:29 a.m.-10:29 a.m.

1 stop7h 00m

San Francisco

Fri 12/6

2:23 p.m.-11:59 p.m.

1 stop6h 36m

C$ 428

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 29/7

5:12 p.m.-10:49 p.m.

1 stop8h 37m

San Francisco

Wed 5/8

2:21 p.m.-11:58 p.m.

1 stop6h 37m

C$ 428

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 28/5

8:00 p.m.-12:20 a.m.

1 stop7h 20m

San Francisco

Mon 1/6

7:15 p.m.-7:50 a.m.

2 stops9h 35m

C$ 435

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 10/9

12:09 p.m.-7:24 p.m.

1 stop10h 15m

San Francisco

Tue 15/9

6:15 a.m.-6:33 p.m.

1 stop9h 18m

C$ 442

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 17/7

8:55 a.m.-2:17 p.m.

1 stop8h 22m

San Francisco

Sun 19/7

9:56 p.m.-11:11 a.m.

1 stop10h 15m

C$ 473

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 25/6

7:27 p.m.-12:45 a.m.

1 stop8h 18m

San Francisco

Sat 4/7

10:55 p.m.-8:23 a.m.

1 stop6h 28m

C$ 473

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Sat 5/9

6:25 a.m.-5:50 p.m.

2 stops14h 25m

San Francisco

Sun 13/9

6:00 a.m.-6:43 p.m.

1 stop9h 43m

C$ 510

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 22/7

6:29 a.m.-10:27 a.m.

1 stop6h 58m

San Francisco

Thu 30/7

11:38 a.m.-11:59 p.m.

1 stop9h 21m

C$ 517

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 24/7

7:36 p.m.-11:46 p.m.

1 stop7h 10m

San Francisco

Sun 26/7

9:56 p.m.-11:11 a.m.

1 stop10h 15m

C$ 528

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/5

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Buffalo to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Buffalo to San Francisco, you should look to book at least 55 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Buffalo to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Buffalo to San Francisco (average of C$ 358). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 547). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BUF to SFO?

Find hourly flight availability from Buffalo to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 May 2026.

When flying from Buffalo to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Buffalo to San Francisco?

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 12 May 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Buffalo to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,446 reviews
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,701 reviews
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,661 reviews
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,952 reviews
Southwest
8.0
Very good
4,295 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Buffalo to San Francisco?

    Delta and Southwest can get you from Buffalo to San Francisco in just under 7h. Your travel time can differ by up to 20m. Airlines will cover a distance of 3705 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buffalo to San Francisco round-trip?

    Frontier, at C$ 153, was found to be the cheapest airline from Buffalo to San Francisco.Alternate airlines to your destination round-trip include United Airlines and Delta. Users have found that Frontier is 67% cheaper than the other options available to this destination.

  • Can I find deals for flights from Buffalo to San Francisco that include hotel bookings?

    Yes. In addition to deals on Buffalo to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to San Francisco.

  • Can I find deals for business class flights from Buffalo to San Francisco?

    Yes. Cheapflights offers flight deals from Buffalo to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Buffalo to San Francisco (average of C$ 358). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 547). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Burlingame
San Bruno
Roseville
Livermore
South San Francisco
Novato
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Buffalo to San Francisco

Discover the top 5 airlines that operate flights from Buffalo to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 May 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 153AverageC$ 383FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 165AverageC$ 515FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 187AverageC$ 491FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 254AverageC$ 409FlexibilityNo cancel feeOn-time63%
Search Southwest flights
American AirlinesCheapestC$ 261AverageC$ 359FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to San Francisco?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Buffalo today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Buffalo to San Francisco?

Cheapflights simply makes it quick and affordable to book flights from Buffalo to San Francisco by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Buffalo to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Buffalo? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Buffalo to San Francisco become cheaper?

Of course! You can now track prices for flights from Buffalo to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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