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Cheap flights from Buffalo to San Antonio from $105

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to San Antonio departing on 4/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Buffalo to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
3:25 pm - 9:00 pm
BUF
-
SAT
6h 35m
1 stop
Southwest Logo
9:05 am - 3:20 pm
SAT
-
BUF
5h 15m
1 stop
$340Southwest
Sat, May 2 - Wed, May 6
United Airlines Logo
7:00 am - 3:43 pm
BUF
-
SAT
9h 43m
2 stops
United Airlines Logo
2:00 pm - 9:01 pm
SAT
-
BUF
6h 01m
1 stop
$345United Airlines
Sat, May 2 - Tue, May 5
Frontier Logo
11:19 am - 9:24 am
BUF
-
SAT
23h 05m
1 stop
Frontier Logo
4:04 pm - 12:42 pm
SAT
-
BUF
19h 38m
2 stops
$353Frontier
Thu, Apr 16 - Tue, Apr 21
Multiple Airlines Logo
11:44 am - 1:17 pm
BUF
-
SAT
26h 33m
1 stop
Multiple Airlines Logo
8:59 pm - 10:41 am
SAT
-
BUF
12h 42m
2 stops
$354Multiple Airlines
Sat, May 2 - Wed, May 6
Southwest Logo
6:55 pm - 11:50 pm
BUF
-
SAT
5h 55m
1 stop
Southwest Logo
3:45 pm - 10:15 pm
SAT
-
BUF
5h 30m
1 stop
$365Southwest
Tue, Apr 21 - Tue, Apr 28
Delta Logo
4:59 pm - 10:25 pm
BUF
-
SAT
6h 26m
1 stop
Delta Logo
12:26 pm - 6:35 pm
SAT
-
BUF
5h 09m
1 stop
$367Delta
Thu, Apr 30 - Mon, May 4
Southwest Logo
4:00 pm - 10:00 pm
BUF
-
SAT
7h 00m
2 stops
Southwest Logo
12:10 pm - 10:50 pm
SAT
-
BUF
9h 40m
1 stop
$370Southwest
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
5:55 pm - 10:54 pm
BUF
-
SAT
5h 59m
1 stop
United Airlines Logo
2:00 pm - 11:55 pm
SAT
-
BUF
8h 55m
2 stops
$372United Airlines
Thu, May 7 - Sat, May 9
Southwest Logo
4:00 pm - 10:00 pm
BUF
-
SAT
7h 00m
2 stops
Southwest Logo
7:25 am - 6:15 pm
SAT
-
BUF
9h 50m
2 stops
$375Southwest
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
2:00 pm - 9:30 pm
BUF
-
SAT
8h 30m
2 stops
Southwest Logo
12:30 pm - 8:25 pm
SAT
-
BUF
6h 55m
2 stops
$377Southwest
Sat, May 2 - Tue, May 5

United Airlines flights from Buffalo to San Antonio

Our best United Airlines deals on Buffalo to San Antonio flight tickets
United Airlines
May 2
BUF7:00 amBuffalo
9h 43m
2 stops
SAT3:43 pmSan Antonio
May 5
SAT2:00 pmSan Antonio
6h 01m
1 stop
BUF9:01 pmBuffalo
$345
United Airlines
May 7
BUF5:55 pmBuffalo
5h 59m
1 stop
SAT10:54 pmSan Antonio
May 9
SAT2:00 pmSan Antonio
8h 55m
2 stops
BUF11:55 pmBuffalo
$372
United Airlines
Jun 10
BUF6:00 amBuffalo
7h 30m
1 stop
SAT12:30 pmSan Antonio
Jun 21
SAT1:40 pmSan Antonio
6h 23m
1 stop
BUF9:03 pmBuffalo
$380

American Airlines flights from Buffalo to San Antonio

Our best American Airlines deals on Buffalo to San Antonio flight tickets
American Airlines
May 19
BUF6:00 pmBuffalo
6h 59m
1 stop
SAT11:59 pmSan Antonio
May 24
SAT1:28 pmSan Antonio
7h 29m
1 stop
BUF9:57 pmBuffalo
$400
American Airlines
May 19
BUF6:00 pmBuffalo
6h 59m
1 stop
SAT11:59 pmSan Antonio
May 24
SAT7:02 amSan Antonio
7h 54m
1 stop
BUF3:56 pmBuffalo
$403
American Airlines
May 19
BUF6:00 pmBuffalo
6h 59m
1 stop
SAT11:59 pmSan Antonio
May 24
SAT2:51 pmSan Antonio
6h 45m
1 stop
BUF10:36 pmBuffalo
$416

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to San Antonio 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, momondo users made 832,500 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from Buffalo to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Sat 5/2

3:25 pm-9:00 pm

1 stop6h 35m

San Antonio

Wed 5/6

9:05 am-3:20 pm

1 stop5h 15m

$340

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Sat 5/2

7:00 am-3:43 pm

2 stops9h 43m

San Antonio

Tue 5/5

2:00 pm-9:01 pm

1 stop6h 01m

$345

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Thu 4/16

11:19 am-9:24 am

1 stop23h 05m

San Antonio

Tue 4/21

4:04 pm-12:42 pm

2 stops19h 38m

$353

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Sat 5/2

11:44 am-1:17 pm

1 stop26h 33m

San Antonio

Wed 5/6

8:59 pm-10:41 am

2 stops12h 42m

$354
Quickest round-trip

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Tue 4/21

6:55 pm-11:50 pm

1 stop5h 55m

San Antonio

Tue 4/28

3:45 pm-10:15 pm

1 stop5h 30m

$365

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Thu 4/30

4:59 pm-10:25 pm

1 stop6h 26m

San Antonio

Mon 5/4

12:26 pm-6:35 pm

1 stop5h 09m

$367

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Tue 4/21

4:00 pm-10:00 pm

2 stops7h 00m

San Antonio

Tue 4/28

12:10 pm-10:50 pm

1 stop9h 40m

$370

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Thu 5/7

5:55 pm-10:54 pm

1 stop5h 59m

San Antonio

Sat 5/9

2:00 pm-11:55 pm

2 stops8h 55m

$372

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Tue 4/21

4:00 pm-10:00 pm

2 stops7h 00m

San Antonio

Tue 4/28

7:25 am-6:15 pm

2 stops9h 50m

$375

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

Sat 5/2

2:00 pm-9:30 pm

2 stops8h 30m

San Antonio

Tue 5/5

12:30 pm-8:25 pm

2 stops6h 55m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

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

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

What is the typical price of a round-trip flight between Buffalo and San Antonio?

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Buffalo during January instead. Flights to San Antonio in January, while not as cheap as those in September, still average around $350.

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

You are more likely to see cheaper flights to San Antonio from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Buffalo for as low as $338 on momondo.

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

As of April 2026, prices for Buffalo to San Antonio flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to San Antonio

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

Cheap Buffalo to San Antonio (BUF to SAT) flight deals and tips

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

Fastest flight time

6h 00m

Direct flights

None
The fastest flight from Buffalo to San Antonio takes 6h 00m
There are no direct flights from Buffalo to San Antonio. There are no popular flight routes from Buffalo to San Antonio.
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Frequently asked questions about flying from Buffalo to San Antonio

  • How far is Buffalo to San Antonio by plane?

    San Antonio is 1428.7 mi away from Buffalo. A reasonable flight in good conditions will take 6h 00m.

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

    Prices for flights from Buffalo Airport to San Antonio Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buffalo Airport to San Antonio Airport.

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

    The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Buffalo to San Antonio?

Best airlines flying from Buffalo to San Antonio

Compare and see reviews for airlines that fly from Buffalo to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $262Free CancellationRating
7.1
11,549 reviews
Search American Airlines flights
DeltaPriceFrom $280Free CancellationRating
7.9
8,370 reviews
Search Delta flights
SouthwestPriceFrom $329Free CancellationRating
8.0
4,337 reviews
Search Southwest flights
United AirlinesPriceFrom $331Free CancellationRating
7.4
9,533 reviews
Search United Airlines flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Pleasanton
Schertz

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Buffalo to San Antonio for you.

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

Yes. momondo allows you to filter the results for Buffalo to San Antonio flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Buffalo to San Antonio.

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

Yes momondo offers price alerts on flights to San Antonio from Buffalo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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