What is the cheapest airline that flies from Buffalo to San Diego?

Southwest, Delta, and Frontier are the most popular carriers operating from Buffalo to San Diego

Which airlines fly to San Diego?

Southwest, Delta and United Airlines are the top three most popular airlines that fly to San Diego from Buffalo according to our data. Southwest is the first choice among our users, with 77% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 3 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Buffalo Airport to San Diego Airport?

Prices for flights from Buffalo Airport to San Diego Airport were last updated today.

How many operators does momondo search for flights from Buffalo Airport to San Diego Airport?

The number of operators available for flights from Buffalo Airport to San Diego Airport is 2 as of August 2025.

How old do you have to be to fly from Buffalo Airport to San Diego Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buffalo Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 171 Cheap Flights from Buffalo to San Diego (BUF-SAN) in 2025

1 adult

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Find the cheapest flights from Buffalo to San Diego (BUF-SAN)

Round-trip

One-way

Last minute

Cheap round-trip flights

5:45 a.m. - 12:20 p.m.BUF-SAN

9h 35m1 stop

6:50 a.m. - 5:35 p.m.SAN-BUF

7h 45m1 stop

C$ 321Southwest

Find Deal

Fri, 14 Nov - Thu, 20 Nov

5:45 p.m. - 10:50 p.m.BUF-SAN

8h 05m1 stop

9:55 a.m. - 9:05 p.m.SAN-BUF

8h 10m2 stops

C$ 322Southwest

Find Deal

Fri, 14 Nov - Tue, 18 Nov

4:15 p.m. - 11:10 p.m.BUF-SAN

9h 55m1 stop

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

8h 00m1 stop

C$ 325Southwest

Find Deal

Wed, 15 Oct - Mon, 20 Oct

7:05 a.m. - 11:40 a.m.BUF-SAN

7h 35m1 stop

10:30 p.m. - 9:54 a.m.SAN-BUF

8h 24m1 stop

C$ 340United Airlines

Find Deal

Mon, 25 Aug - Fri, 29 Aug

6:00 a.m. - 11:20 a.m.BUF-SAN

8h 20m1 stop

10:10 a.m. - 9:51 p.m.SAN-BUF

8h 41m1 stop

C$ 347American Airlines

Find Deal

Tue, 2 Sep - Tue, 9 Sep

5:55 p.m. - 10:14 p.m.BUF-SAN

7h 19m1 stop

11:08 a.m. - 10:46 p.m.SAN-BUF

8h 38m2 stops

C$ 353United Airlines

Find Deal

Wed, 15 Oct - Tue, 21 Oct

6:00 a.m. - 11:20 a.m.BUF-SAN

8h 20m1 stop

10:10 a.m. - 9:51 p.m.SAN-BUF

8h 41m1 stop

C$ 369American Airlines

Find Deal

Tue, 2 Sep - Tue, 9 Sep

2:09 p.m. - 11:50 p.m.BUF-SAN

12h 41m1 stop

9:03 p.m. - 1:14 p.m.SAN-BUF

13h 11m1 stop

C$ 384Frontier

Find Deal

Sun, 12 Oct - Thu, 23 Oct

4:35 p.m. - 9:20 p.m.BUF-SAN

7h 45m1 stop

10:20 p.m. - 8:23 a.m.SAN-BUF

7h 03m1 stop

C$ 409Delta

Find Deal

Tue, 14 Oct - Mon, 20 Oct

3:56 p.m. - 9:47 p.m.BUF-SAN

8h 51m1 stop

10:06 p.m. - 10:31 a.m.SAN-BUF

9h 25m1 stop

C$ 442Delta

Find Deal

Thu, 16 Oct - Wed, 22 Oct

United Airlines flights from Buffalo to San Diego

Our best United Airlines deals on Buffalo to San Diego flight tickets

United Airlines

25 Aug

BUF7:05 a.m.Buffalo

7h 35m

1 stop

SAN11:40 a.m.San Diego

29 Aug

SAN10:30 p.m.San Diego

8h 24m

1 stop

BUF9:54 a.m.Buffalo

C$ 340

Find similar

United Airlines

15 Oct

BUF5:55 p.m.Buffalo

7h 19m

1 stop

SAN10:14 p.m.San Diego

21 Oct

SAN11:08 a.m.San Diego

8h 38m

2 stops

BUF10:46 p.m.Buffalo

C$ 353

Find similar

United Airlines

24 Aug

BUF6:00 a.m.Buffalo

8h 22m

1 stop

SAN11:22 a.m.San Diego

31 Aug

SAN10:30 p.m.San Diego

8h 23m

1 stop

BUF9:53 a.m.Buffalo

C$ 368

Find similar

Frontier flights from Buffalo to San Diego

Our best Frontier deals on Buffalo to San Diego flight tickets

Frontier

12 Oct

BUF2:09 p.m.Buffalo

12h 41m

1 stop

SAN11:50 p.m.San Diego

23 Oct

SAN9:03 p.m.San Diego

13h 11m

1 stop

BUF1:14 p.m.Buffalo

C$ 384

Find similar

Frontier

6 Aug

BUF5:12 p.m.Buffalo

8h 50m

1 stop

SAN11:02 p.m.San Diego

14 Aug

SAN10:52 a.m.San Diego

23h 24m

1 stop

BUF1:16 p.m.Buffalo

C$ 642

Find similar

Frontier

8 Aug

BUF2:11 p.m.Buffalo

23h 59m

1 stop

SAN11:10 a.m.San Diego

14 Aug

SAN6:25 a.m.San Diego

27h 51m

1 stop

BUF1:16 p.m.Buffalo

C$ 897

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Fri 14/11

5:45 a.m.-12:20 p.m.

1 stop9h 35m

San Diego

Thu 20/11

6:50 a.m.-5:35 p.m.

1 stop7h 45m

C$ 321

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Fri 14/11

5:45 p.m.-10:50 p.m.

1 stop8h 05m

San Diego

Tue 18/11

9:55 a.m.-9:05 p.m.

2 stops8h 10m

C$ 322

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Wed 15/10

4:15 p.m.-11:10 p.m.

1 stop9h 55m

San Diego

Mon 20/10

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

1 stop8h 00m

C$ 325

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Mon 25/8

7:05 a.m.-11:40 a.m.

1 stop7h 35m

San Diego

Fri 29/8

10:30 p.m.-9:54 a.m.

1 stop8h 24m

C$ 340

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 2/9

6:00 a.m.-11:20 a.m.

1 stop8h 20m

San Diego

Tue 9/9

10:10 a.m.-9:51 p.m.

1 stop8h 41m

C$ 347

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Wed 15/10

5:55 p.m.-10:14 p.m.

1 stop7h 19m

San Diego

Tue 21/10

11:08 a.m.-10:46 p.m.

2 stops8h 38m

C$ 353

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 2/9

6:00 a.m.-11:20 a.m.

1 stop8h 20m

San Diego

Tue 9/9

10:10 a.m.-9:51 p.m.

1 stop8h 41m

C$ 369

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Sun 12/10

2:09 p.m.-11:50 p.m.

1 stop12h 41m

San Diego

Thu 23/10

9:03 p.m.-1:14 p.m.

1 stop13h 11m

C$ 384

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Tue 14/10

4:35 p.m.-9:20 p.m.

1 stop7h 45m

San Diego

Mon 20/10

10:20 p.m.-8:23 a.m.

1 stop7h 03m

C$ 409

BuffaloSan Diego

BUF - SAN

BUFSAN

Buffalo

Thu 16/10

3:56 p.m.-9:47 p.m.

1 stop8h 51m

San Diego

Wed 22/10

10:06 p.m.-10:31 a.m.

1 stop9h 25m

C$ 442

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Buffalo to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to San Diego?

In general, November is the cheapest month to fly from Buffalo to San Diego. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 524. If you are unable to visit San Diego during the month of November, then departing from Buffalo during the month January is also very affordable. Most momondo users find prices during this month for around C$ 528.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart on your flight to San Diego is on a Wednesday when prices can be found for as low as C$ 435. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Diego on Friday is C$ 832.

What is the cheapest time of day to depart on your flight to San Diego?

Flying to San Diego from Buffalo in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 349 when looking at flights departing in the evening. Flights to San Diego are more costly in the morning, with an average ticket price of C$ 712. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around C$ 596 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Buffalo for as low as C$ 501 on momondo.

How have Buffalo to San Diego flight prices changed over time?

As of August 2025, prices for Buffalo to San Diego flights are approximately 7% cheaper when compared to flights at the same time last year.

When to book flights from Buffalo to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Buffalo to San Diego (BUF to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to San Diego

Best price found	C$ 171
Fastest flight time	6h 55m
Direct flights	None
Airports in San Diego	1 airport

The best one-way flight to San Diego from Buffalo in the past 72 hours is C$ 171. The best round-trip flight deal from Buffalo to San Diego found on momondo in the last 72 hours is C$ 321.

The fastest flight from Buffalo to San Diego takes 6h 55m

There are no direct flights from Buffalo to San Diego. Popular non-direct route for this connection is Buffalo Airport - San Diego Airport.

There is 1 airport near San Diego: San Diego (SAN)

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How far is Buffalo to San Diego by plane?
The straight-line distance from Buffalo to San Diego is 3511.1 km. 6h 55m is a normal flight duration for this route.
When did momondo last update prices for flights from Buffalo Airport to San Diego Airport?
Prices for flights from Buffalo Airport to San Diego Airport were last updated today.
How many operators does momondo search for flights from Buffalo Airport to San Diego Airport?
The number of operators available for flights from Buffalo Airport to San Diego Airport is 2 as of August 2025.
How old do you have to be to fly from Buffalo Airport to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buffalo Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Buffalo to San Diego?
Based on momondo bookings for flights between Buffalo and San Diego, the leading airline is Southwest, making up 79% of the total bookings. Other popular airlines include Delta with 21%.

Best airlines flying from Buffalo to San Diego

Compare and see reviews for airlines that fly from Buffalo to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom C$ 477	Free Cancellation	Rating 8.0 7,985 reviews		Search Delta flights
Southwest	PriceFrom C$ 521	Free Cancellation	Rating 8.0 4,246 reviews		Search Southwest flights

Coronado

Chula Vista

El Cajon

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to San Diego?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Buffalo.

Can I find flights from Buffalo to San Diego with flexible booking policies on momondo?

Yes. All flights to San Diego from Buffalo on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Buffalo to San Diego?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Buffalo.

I’m not ready to book a flight from Buffalo to San Diego right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Buffalo to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.