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Cheap flights from Buffalo to San Francisco from C$ 144

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SFO
27 Apr — 4 May1
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 28 March 2026.

Tue 5/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Wed 6/510:15 p.m.
SFO
-
BUF
1 stop9h 26m
Frontier
Deal found 25/3C$ 257
Wed 22/41:10 p.m.
BUF
-
SFO
1 stop11h 15m
Southwest
Wed 29/49:15 p.m.
SFO
-
BUF
1 stop7h 35m
Southwest
Deal found 24/3C$ 287
Wed 15/49:25 a.m.
BUF
-
SFO
1 stop14h 30m
Southwest
Wed 22/411:25 p.m.
SFO
-
BUF
1 stop7h 50m
Southwest
Deal found 24/3C$ 294
Tue 12/51:10 p.m.
BUF
-
SFO
1 stop11h 15m
Southwest
Mon 18/59:15 p.m.
SFO
-
BUF
1 stop7h 35m
Southwest
Deal found 25/3C$ 315
Tue 12/511:36 a.m.
BUF
-
SFO
1 stop10h 58m
Frontier
Tue 19/510:15 p.m.
SFO
-
BUF
1 stop12h 39m
Frontier
Deal found 25/3C$ 326
Sat 25/49:30 a.m.
BUF
-
SFO
2 stops12h 25m
Southwest
Tue 28/47:15 p.m.
SFO
-
BUF
2 stops9h 35m
Southwest
Deal found 25/3C$ 329
Wed 22/41:45 p.m.
BUF
-
SFO
1 stop10h 43m
American Airlines
Wed 29/45:30 a.m.
SFO
-
BUF
1 stop9h 00m
American Airlines
Deal found 25/3C$ 341

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 28 March 2026.

Round-trip from

C$ 257

One-way from

C$ 144

Popular in

March

Cheapest in

January

Average price

C$ 557
Frontier
  • Frontier
  • 5/5-6/5
  • 2 total stops
  • 20h 24m total
  • Buffalo to San Francisco
Search Deals
Southwest
  • Southwest
  • 12/5
  • 1 total stop
  • 8h 25m total
  • Buffalo to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 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 28 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

Tue 12/5

1:10 p.m.-9:25 p.m.

1 stop11h 15m

San Francisco

Mon 18/5

9:15 p.m.-7:50 a.m.

1 stop7h 35m

C$ 315

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 22/4

1:10 p.m.-7:55 p.m.

2 stops9h 45m

San Francisco

Wed 29/4

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

2 stops9h 35m

C$ 359

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Wed 29/4

1:10 p.m.-9:25 p.m.

1 stop11h 15m

San Francisco

Wed 6/5

11:25 p.m.-10:15 a.m.

1 stop7h 50m

C$ 403

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Tue 5/5

1:10 p.m.-7:55 p.m.

2 stops9h 45m

San Francisco

Wed 6/5

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

2 stops9h 35m

C$ 417
Quickest round-trip

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Mon 27/4

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

1 stop7h 20m

San Francisco

Wed 27/5

11:25 p.m.-10:15 a.m.

1 stop7h 50m

C$ 434

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Tue 12/5

1:10 p.m.-9:25 p.m.

1 stop11h 15m

San Francisco

Sun 17/5

11:25 p.m.-10:15 a.m.

1 stop7h 50m

C$ 448

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Sun 3/5

2:55 p.m.-11:20 p.m.

1 stop11h 25m

San Francisco

Wed 6/5

9:15 p.m.-7:50 a.m.

1 stop7h 35m

C$ 455

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Sat 12/9

10:50 a.m.-7:35 p.m.

2 stops11h 45m

San Francisco

Sat 19/9

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

1 stop8h 10m

C$ 469
Cheapest one-way

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Tue 12/5

1:10 p.m.-9:25 p.m.

1 stop11h 15m

C$ 144

BuffaloSan Francisco

BUF - SFO

BUFSFO

Buffalo

Mon 4/5

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

1 stop10h 20m

C$ 172

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 15 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 13 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$ 219). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 347). 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 28 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
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
4,333 reviews
Southwest
8.0
Very good
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
8,356 reviews
Southwest
8.0
Very good
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
9,499 reviews
Southwest
8.0
Very good
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
11,520 reviews
Southwest
8.0
Very good
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
3,013 reviews
Southwest
8.0
Very good
4,333 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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?

    Southwest can get you from Buffalo to San Francisco in just under 11h 15m. 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$ 155, 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$ 219). Flying from Buffalo to San Francisco in March is currently the most expensive (average of C$ 347). 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
San Bruno
Burlingame
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 28 March 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 155AverageC$ 398FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 167AverageC$ 569FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 190AverageC$ 498FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 226AverageC$ 419FlexibilityNo cancel feeOn-time63%
Search Southwest flights
American AirlinesCheapestC$ 265AverageC$ 365FlexibilityNo 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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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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