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Cheap flights from Buffalo to San Diego from C$ 170

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SAN
19 Apr — 26 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to San Diego
Explore the most affordable flight options available from Buffalo to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 March 2026.

Tue 14/41:10 p.m.
BUF
-
SAN
1 stop8h 45m
Southwest
Sat 9/510:40 p.m.
SAN
-
BUF
1 stop8h 45m
Southwest
Deal found 20/3C$ 400
Sat 18/43:25 p.m.
BUF
-
SAN
2 stops11h 00m
Southwest
Tue 21/47:40 p.m.
SAN
-
BUF
2 stops9h 10m
Southwest
Deal found 19/3C$ 413
Tue 28/46:05 a.m.
BUF
-
SAN
1 stop7h 39m
Delta
Sat 2/510:25 p.m.
SAN
-
BUF
1 stop9h 45m
Delta
Deal found 15/3C$ 435
Fri 1/55:20 p.m.
BUF
-
SAN
1 stop7h 40m
Southwest
Wed 6/510:40 p.m.
SAN
-
BUF
1 stop8h 35m
Southwest
Deal found 15/3C$ 439
Tue 5/53:10 p.m.
BUF
-
SAN
2 stops9h 20m
Southwest
Fri 8/59:20 a.m.
SAN
-
BUF
2 stops9h 10m
Southwest
Deal found 16/3C$ 453
Wed 15/41:10 p.m.
BUF
-
SAN
1 stop12h 15m
Southwest
Wed 15/76:45 a.m.
SAN
-
BUF
2 stops11h 40m
Southwest
Deal found 17/3C$ 454
Mon 4/511:25 a.m.
BUF
-
SAN
2 stops9h 35m
Southwest
Sat 9/59:40 p.m.
SAN
-
BUF
1 stop7h 35m
Southwest
Deal found 16/3C$ 460
Tue 28/48:56 a.m.
BUF
-
SAN
1 stop8h 24m
Delta
Thu 7/52:30 p.m.
SAN
-
BUF
1 stop6h 29m
Delta
Deal found 15/3C$ 463
Wed 20/57:00 a.m.
BUF
-
SAN
1 stop7h 25m
United Airlines
Mon 25/510:40 p.m.
SAN
-
BUF
1 stop8h 36m
United Airlines
Deal found 19/3C$ 464
Tue 5/512:25 p.m.
BUF
-
SAN
1 stop10h 39m
JetBlue
Wed 6/511:05 a.m.
SAN
-
BUF
1 stop8h 52m
JetBlue
Deal found 16/3C$ 465

Find flight deals from Buffalo to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Diego (SAN). 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 20 March 2026.

Round-trip from

C$ 400

One-way from

C$ 170

Popular in

December

Cheapest in

October

Average price

C$ 597
Southwest
  • Southwest
  • 14/4-9/5
  • 2 total stops
  • 17h 30m total
  • Buffalo to San Diego
Search Deals
Frontier
  • Frontier
  • 4/5
  • 2 total stops
  • 47h 10m total
  • Buffalo to San Diego
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 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 Diego 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 20 March 2026.
Use the filters below to find and compare flights from Buffalo to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 14/4

1:10 p.m.-6:55 p.m.

1 stop8h 45m

San Diego

Sat 9/5

10:40 p.m.-10:25 a.m.

1 stop8h 45m

C$ 400

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Mon 4/5

4:00 p.m.-10:00 p.m.

1 stop9h 00m

San Diego

Sat 9/5

6:30 a.m.-4:35 p.m.

1 stop7h 05m

C$ 439

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Wed 15/4

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

1 stop12h 15m

San Diego

Wed 15/7

7:00 a.m.-7:55 p.m.

1 stop9h 55m

C$ 446

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Sun 24/5

5:11 p.m.-11:27 p.m.

1 stop9h 16m

San Diego

Fri 29/5

11:33 a.m.-11:59 p.m.

1 stop9h 26m

C$ 479

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Thu 28/5

4:00 p.m.-10:00 p.m.

1 stop9h 00m

San Diego

Sun 31/5

9:40 p.m.-7:50 a.m.

1 stop7h 10m

C$ 479

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Sat 23/5

3:25 p.m.-9:25 p.m.

1 stop9h 00m

San Diego

Wed 27/5

10:40 p.m.-10:15 a.m.

1 stop8h 35m

C$ 479
Quickest round-trip

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 23/6

7:10 p.m.-11:20 p.m.

1 stop7h 10m

San Diego

Fri 10/7

10:40 p.m.-10:20 a.m.

1 stop8h 40m

C$ 479
Cheapest one-way

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 23/6

12:50 p.m.-6:23 p.m.

1 stop8h 33m

C$ 240

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Mon 4/5

4:00 p.m.-10:00 p.m.

1 stop9h 00m

C$ 240

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 9/6

9:50 a.m.-7:08 p.m.

1 stop12h 18m

C$ 240

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/3

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Buffalo to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 Diego

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Diego. Price data was last updated on 13 March 2026.

Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, June is the cheapest month in which you can book a flight from Buffalo to San Diego (average of C$ 136). Flying from Buffalo to San Diego in July is currently the most expensive (average of C$ 380). 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated 20 March 2026.
See what other customers who have flown with Southwest from Buffalo to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,324 reviews
Check prices

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

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
4,324 reviews
Southwest
8.0
Very good
4,324 reviews
Check prices

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

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 Diego. 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 Diego?

    There are many flights that can get you from Buffalo to San Diego in 8h 45m. Fly via Southwest to get the fastest option. The distance from Buffalo to San Diego is about 3526 km.

  • What is the cheapest airline to fly from Buffalo to San Diego round-trip?

    Currently priced at C$ 407, Southwest will fly you from Buffalo to San Diego and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Southwest is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo to San Diego 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 Diego?

    Currently, June is the cheapest month in which you can book a flight from Buffalo to San Diego (average of C$ 136). Flying from Buffalo to San Diego in July is currently the most expensive (average of C$ 380). 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 Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

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Top airline flying from Buffalo to San Diego

Discover the top airline that operate flights from Buffalo to San Diego. 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 20 March 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 407AverageC$ 654FlexibilityNo cancel feeOn-time63%
Search Southwest 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 Diego?

When you search for this flight from Buffalo to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Buffalo to San Diego.

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

Yes, we can. To see specific flights from Buffalo to San Diego with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Diego from Buffalo today and book when prices fit your budget.

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