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Cheap flights from Buffalo to San Francisco from C$ 172

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SFO
26 May — 2 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 26 April 2026.

Tue 5/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Sat 16/510:15 p.m.
SFO
-
BUF
1 stop9h 26m
Frontier
Deal found 21/4C$ 295
Thu 28/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Mon 1/610:15 p.m.
SFO
-
BUF
1 stop9h 26m
Frontier
Deal found 22/4C$ 322
Tue 5/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Sat 9/510:15 p.m.
SFO
-
BUF
1 stop9h 26m
Frontier
Deal found 21/4C$ 350
Thu 27/812:50 p.m.
BUF
-
SFO
1 stop8h 58m
Delta
Mon 31/810:45 p.m.
SFO
-
BUF
1 stop6h 38m
Delta
Deal found 21/4C$ 351
Tue 12/56:25 a.m.
BUF
-
SFO
1 stop6h 59m
Delta
Sat 16/55:50 a.m.
SFO
-
BUF
1 stop6h 22m
Delta
Deal found 23/4C$ 380
Thu 28/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Fri 5/610:10 p.m.
SFO
-
BUF
1 stop10h 18m
Frontier
Deal found 25/4C$ 383
Thu 7/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Wed 13/510:15 p.m.
SFO
-
BUF
1 stop9h 26m
Frontier
Deal found 25/4C$ 396
Thu 7/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Tue 12/510:15 p.m.
SFO
-
BUF
1 stop12h 39m
Frontier
Deal found 25/4C$ 398
Wed 3/63:10 p.m.
BUF
-
SFO
2 stops9h 55m
Southwest
Mon 8/610:50 p.m.
SFO
-
BUF
1 stop12h 30m
Southwest
Deal found 21/4C$ 406
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 21/4C$ 410

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 26 April 2026.

Round-trip from

C$ 322

One-way from

C$ 172

Popular in

March

Cheapest in

January

Average price

C$ 547
Frontier
  • Frontier
  • 28/5-1/6
  • 2 total stops
  • 20h 24m total
  • Buffalo to San Francisco
Search Deals
Frontier
  • Frontier
  • 6/6
  • 1 total stop
  • 9h 53m total
  • Buffalo to San Francisco
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 46 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 April 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 26 April 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

Thu 27/8

12:50 p.m.-6:48 p.m.

1 stop8h 58m

San Francisco

Mon 31/8

10:45 p.m.-8:23 a.m.

1 stop6h 38m

C$ 351

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 8/7

12:03 p.m.-6:14 p.m.

1 stop9h 11m

San Francisco

Mon 20/7

2:19 p.m.-11:58 p.m.

1 stop6h 39m

C$ 428

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 9/10

7:35 p.m.-11:59 p.m.

1 stop7h 24m

San Francisco

Tue 20/10

11:45 p.m.-11:15 a.m.

1 stop8h 30m

C$ 428

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 21/8

7:35 p.m.-11:45 p.m.

1 stop7h 10m

San Francisco

Sun 30/8

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

1 stop9h 18m

C$ 473

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 25/9

6:00 a.m.-1:25 p.m.

1 stop10h 25m

San Francisco

Mon 28/9

10:45 p.m.-8:23 a.m.

1 stop6h 38m

C$ 473

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 20/8

7:35 p.m.-11:45 p.m.

1 stop7h 10m

San Francisco

Sun 23/8

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

1 stop9h 43m

C$ 515

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 15/5

7:50 p.m.-1:16 a.m.

1 stop8h 26m

San Francisco

Tue 19/5

11:10 p.m.-9:42 a.m.

1 stop7h 32m

C$ 532

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 15/5

7:50 p.m.-1:16 a.m.

1 stop8h 26m

San Francisco

Mon 18/5

11:10 p.m.-9:42 a.m.

1 stop7h 32m

C$ 532

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 24/9

8:35 a.m.-2:40 p.m.

2 stops9h 05m

San Francisco

Wed 30/9

6:35 a.m.-9:05 p.m.

2 stops11h 30m

C$ 545

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 21/8

5:25 p.m.-11:25 p.m.

1 stop9h 00m

San Francisco

Sun 30/8

11:05 a.m.-1:30 a.m.

2 stops11h 25m

C$ 583

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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.

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 26 April 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
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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
4,327 reviews
Southwest
8.0
Very good
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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
8,458 reviews
Southwest
8.0
Very good
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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
9,657 reviews
Southwest
8.0
Very good
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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
11,673 reviews
Southwest
8.0
Very good
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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
5.7
Fair
2,976 reviews
Southwest
8.0
Very good
4,327 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

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 can get you from Buffalo to San Francisco in just under 8h 58m. Your travel time can differ by up to . Airlines will cover a distance of 3705 km.

  • 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 26 April 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 153AverageC$ 377FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 165AverageC$ 514FlexibilityNo 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

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

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

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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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