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$123+ Cheap flights from Buffalo to San Antonio (BUF - SAT)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SAT
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to San Antonio are usually found in September or May, booked 12 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Buffalo to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Antonio (SAT). 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 agosto 14, 2025.

Round-trip from

$236
(Frontier)

One-way from

$123
(Frontier)

Popular in

December

Cheapest in

September

Average price

$399
From Buffalo to San Antonio
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One-way flight from Buffalo to San Antonio
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Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Buffalo to San Antonio

Cheapest flights from Buffalo to San Antonio
Explore the most affordable flight options available from Buffalo to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:38 pmBUF - SAT
2 stops17h 39mFrontier
vie. 11/75:35 pmSAT - BUF
2 stops15h 33mFrontier
Deal found 8/14$236
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:50 pmBUF - SAT
1 stop5h 44mDelta
mar. 9/1610:37 amSAT - BUF
1 stop6h 26mDelta
Deal found 8/13$269
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/36:00 amBUF - SAT
1 stop7h 24mDelta
jue. 9/184:31 pmSAT - BUF
1 stop5h 25mDelta
Deal found 8/13$289
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/312:02 pmBUF - SAT
1 stop5h 43mDelta
dom. 9/215:10 amSAT - BUF
1 stop5h 58mDelta
Deal found 8/13$298
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/66:50 pmBUF - SAT
1 stop5h 44mDelta
sáb. 9/203:30 pmSAT - BUF
1 stop6h 06mDelta
Deal found 8/13$309
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/24:15 pmBUF - SAT
2 stops8h 55mSouthwest
lun. 10/64:35 pmSAT - BUF
1 stop6h 15mSouthwest
Deal found 8/12$314
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/512:02 pmBUF - SAT
1 stop5h 43mDelta
sáb. 9/203:30 pmSAT - BUF
1 stop6h 06mDelta
Deal found 8/13$318
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:38 pmBUF - SAT
1 stop20h 32mMultiple Airlines
vie. 11/76:00 amSAT - BUF
2 stops13h 53mMultiple Airlines
Deal found 8/14$321
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/234:05 pmBUF - SAT
2 stops8h 00mSouthwest
vie. 9/263:30 pmSAT - BUF
1 stop6h 35mSouthwest
Deal found 8/13$323
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/76:00 amBUF - SAT
1 stop6h 00mDelta
mar. 9/164:31 pmSAT - BUF
1 stop5h 25mDelta
Deal found 8/13$324
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/246:10 amBUF - SAT
1 stop5h 56mDelta
vie. 1/25:25 amSAT - BUF
1 stop4h 49mDelta
Deal found 8/12$338

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
Use the filters below to find and compare flights from Buffalo to San Antonio that are best for you.

Fly from

Buffalo

Fly to

San Antonio

Route

Depart

Return

Price

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

vie. 10/31

9:38 pm-2:17 pm

2 stops17h 39m

San Antonio

vie. 11/7

5:35 pm-10:08 am

2 stops15h 33m

$236

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mar. 10/14

7:30 pm-12:20 am

1 stop5h 50m

San Antonio

mié. 10/15

4:35 pm-10:52 pm

1 stop5h 17m

$269

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mié. 9/3

6:50 pm-11:34 pm

1 stop5h 44m

San Antonio

mar. 9/16

10:37 am-6:03 pm

1 stop6h 26m

$269

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mié. 9/3

6:00 am-10:28 am

1 stop5h 28m

San Antonio

mié. 9/17

5:10 am-12:08 pm

1 stop5h 58m

$269

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mar. 9/30

5:35 pm-10:36 pm

1 stop6h 01m

San Antonio

sáb. 10/4

6:35 am-2:05 pm

1 stop6h 30m

$289

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mié. 9/3

5:10 pm-11:57 pm

1 stop7h 47m

San Antonio

sáb. 9/20

8:00 am-4:00 pm

1 stop7h 00m

$289

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

sáb. 9/6

12:02 pm-4:07 pm

1 stop5h 05m

San Antonio

mié. 9/17

5:10 am-12:08 pm

1 stop5h 58m

$289

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

jue. 9/4

5:10 pm-11:57 pm

1 stop7h 47m

San Antonio

mié. 9/17

5:10 am-12:08 pm

1 stop5h 58m

$289

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mar. 9/30

4:43 pm-11:59 pm

1 stop8h 16m

San Antonio

jue. 10/2

4:31 pm-10:56 pm

1 stop5h 25m

$289

BuffaloSan Antonio

BUF - SAT

BUFSAT

Buffalo

mié. 9/3

6:00 am-12:24 pm

1 stop7h 24m

San Antonio

jue. 9/18

4:31 pm-10:56 pm

1 stop5h 25m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 20 results
1
2

Best time to book a flight from Buffalo to San Antonio

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

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Antonio. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to San Antonio, you should look to book at least 12 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 Antonio?

Currently, August is the cheapest month in which you can book a flight from Buffalo to San Antonio (average of $295). Flying from Buffalo to San Antonio in March is currently the most expensive (average of $376). 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 SAT?

Find hourly flight availability from Buffalo to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

It’s typically best to fly out from Buffalo to San Antonio in the evening. Doing so could potentially save you 18% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 Antonio. Reviews last updated agosto 14, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Buffalo to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Buffalo to San Antonio round-trip?

    Currently priced at $298, American Airlines will fly you from Buffalo to San Antonio and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Southwest - these airlines can fly you to your destination from $326 and $335, respectively. American Airlines is 28% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Buffalo to San Antonio (average of $295). Flying from Buffalo to San Antonio in March is currently the most expensive (average of $376). 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

Traveling to a place near San Antonio?

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

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Alternative routes for Buffalo to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Buffalo to San Antonio

Discover the top 4 airlines that operate flights from Buffalo to San Antonio. 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 2,558,603 searches. Data last updated agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$298Average$411FlexibilityNo cancel feeOn-time71%
DeltaCheapest$326Average$398FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$335Average$449FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$335Average$486FlexibilityNo cancel feeOn-time69%

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