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Cheap flights from Buffalo to San Francisco from C$ 145

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 17/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SFO
7 Apr — 14 Apr1
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 8 March 2026.

Wed 29/46:02 p.m.
BUF
-
SFO
1 stop7h 43m
United Airlines
Wed 13/510:55 p.m.
SFO
-
BUF
1 stop7h 46m
United Airlines
Deal found 3/3C$ 340
Wed 29/46:55 p.m.
BUF
-
SFO
1 stop7h 40m
Southwest
Wed 13/57:15 p.m.
SFO
-
BUF
2 stops9h 35m
Southwest
Deal found 3/3C$ 347
Mon 13/44:00 p.m.
BUF
-
SFO
1 stop10h 20m
Southwest
Sun 26/411:25 p.m.
SFO
-
BUF
1 stop7h 50m
Southwest
Deal found 3/3C$ 357
Tue 14/47:00 a.m.
BUF
-
SFO
1 stop9h 27m
United Airlines
Sat 18/411:20 p.m.
SFO
-
BUF
1 stop7h 40m
United Airlines
Deal found 5/3C$ 361
Mon 13/44:00 p.m.
BUF
-
SFO
1 stop10h 20m
Southwest
Mon 20/410:55 p.m.
SFO
-
BUF
2 stops10h 20m
Southwest
Deal found 3/3C$ 363
Sat 18/43:25 p.m.
BUF
-
SFO
1 stop9h 30m
Southwest
Sat 25/49:15 p.m.
SFO
-
BUF
1 stop8h 00m
Southwest
Deal found 3/3C$ 367
Thu 30/47:00 a.m.
BUF
-
SFO
1 stop9h 23m
United Airlines
Sat 9/512:45 p.m.
SFO
-
BUF
1 stop7h 20m
United Airlines
Deal found 4/3C$ 369
Tue 14/411:00 a.m.
BUF
-
SFO
2 stops11h 55m
Southwest
Sat 18/411:25 p.m.
SFO
-
BUF
1 stop8h 00m
Southwest
Deal found 5/3C$ 374
Fri 10/412:07 p.m.
BUF
-
SFO
1 stop8h 29m
Delta
Wed 15/46:00 a.m.
SFO
-
BUF
1 stop9h 35m
Delta
Deal found 6/3C$ 376
Fri 17/47:00 a.m.
BUF
-
SFO
1 stop9h 27m
United Airlines
Mon 20/411:52 p.m.
SFO
-
BUF
1 stop7h 18m
United Airlines
Deal found 6/3C$ 377
Tue 21/43:10 p.m.
BUF
-
SFO
2 stops10h 35m
Southwest
Tue 28/47:15 p.m.
SFO
-
BUF
2 stops9h 35m
Southwest
Deal found 7/3C$ 381

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 8 March 2026.

Round-trip from

C$ 340

One-way from

C$ 145

Popular in

December

Cheapest in

January

Average price

C$ 498
United Airlines
  • United Airlines
  • 29/4-13/5
  • 2 total stops
  • 15h 29m total
  • Buffalo to San Francisco
Search Deals
Frontier
  • Frontier
  • 17/4
  • 1 total stop
  • 32h 26m total
  • Buffalo to San Francisco
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 8 March 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

Fri 1/5

12:09 p.m.-8:24 p.m.

1 stop11h 15m

San Francisco

Mon 4/5

10:55 p.m.-8:16 a.m.

1 stop6h 21m

C$ 382

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 9/4

4:00 p.m.-11:20 p.m.

1 stop10h 20m

San Francisco

Thu 23/4

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

2 stops9h 35m

C$ 391

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 19/8

6:15 a.m.-12:15 p.m.

1 stop9h 00m

San Francisco

Sat 22/8

10:40 p.m.-11:04 a.m.

1 stop9h 24m

C$ 407

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 19/8

12:35 p.m.-6:15 p.m.

2 stops8h 40m

San Francisco

Sat 22/8

11:40 p.m.-10:50 a.m.

1 stop8h 10m

C$ 466

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Tue 14/7

12:45 p.m.-7:55 p.m.

2 stops10h 10m

San Francisco

Sun 19/7

9:10 p.m.-8:10 a.m.

1 stop8h 00m

C$ 507

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Thu 30/4

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

2 stops10h 25m

San Francisco

Sat 9/5

6:15 a.m.-8:40 p.m.

2 stops11h 25m

C$ 507
Quickest round-trip

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 17/4

7:00 a.m.-1:27 p.m.

1 stop9h 27m

San Francisco

Mon 20/4

11:52 p.m.-10:10 a.m.

1 stop7h 18m

C$ 513

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 26/6

5:52 p.m.-12:30 a.m.

1 stop9h 38m

San Francisco

Fri 3/7

10:35 p.m.-9:57 a.m.

1 stop8h 22m

C$ 518

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 1/5

11:02 a.m.-6:56 p.m.

2 stops10h 54m

San Francisco

Mon 4/5

11:56 p.m.-9:41 a.m.

1 stop6h 45m

C$ 525
Cheapest one-way

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Fri 17/4

12:40 p.m.-8:00 p.m.

2 stops10h 20m

C$ 186

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Francisco. Price data was last updated on 6 March 2026.

To ensure you get the cheapest price possible for a flight from Buffalo to San Francisco, you should look to book at least 56 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, September is the cheapest month in which you can book a flight from Buffalo to San Francisco (average of C$ 214). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 339). 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 8 March 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.

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 8 March 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
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,315 reviews
Southwest
8.0
Very good
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,269 reviews
Southwest
8.0
Very good
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,405 reviews
Southwest
8.0
Very good
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.1
Good
11,397 reviews
Southwest
8.0
Very good
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.7
Fair
3,035 reviews
Southwest
8.0
Very good
4,315 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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, Southwest, and American Airlines can get you from Buffalo to San Francisco in just under 9h. Your travel time can differ by up to 2h 15m. 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$ 151, 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 66% 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, September is the cheapest month in which you can book a flight from Buffalo to San Francisco (average of C$ 214). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 339). 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
Richmond
Burlingame
South San Francisco
Scotts Valley
Novato
Santa Clara
Vallejo

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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 8 March 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 151AverageC$ 389FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 163AverageC$ 556FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 186AverageC$ 487FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 221AverageC$ 399FlexibilityNo cancel feeOn-time63%
Search Southwest flights
American AirlinesCheapestC$ 259AverageC$ 358FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights 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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