$129 Cheap Flights from Buffalo (BUF) to San Antonio (SAT)

View $129 flight on Tue, Aug 25, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to San Antonio International Airport (SAT)

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Cheap Flights from Buffalo to San Antonio (BUF-SAT)

Prices were available within the past 7 days and start at $129 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $257 found 1 day ago
United
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $257 found 1 day ago
American Airlines
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $270 found 1 day ago
American Airlines
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $270 found 1 day ago
American Airlines
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $278 found 1 day ago
American Airlines
Wed, Sep 9 - Sat, Sep 12
BUF
Buffalo
SAT
San Antonio
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 9 from Buffalo to San Antonio, returning Sat, Sep 12, priced at $282 found 1 day ago
American Airlines
Wed, Sep 9 - Sat, Sep 12
BUF
Buffalo
SAT
San Antonio
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 9 from Buffalo to San Antonio, returning Sat, Sep 12, priced at $287 found 1 day ago
American Airlines
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $288 found 1 day ago
Southwest Airlines
Tue, Aug 11 - Tue, Aug 18
BUF
Buffalo
SAT
San Antonio
$300 Roundtrip, found 1 day ago
$300
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Aug 11 from Buffalo to San Antonio, returning Tue, Aug 18, priced at $300 found 1 day ago
Frontier Airlines
Sun, Jul 26 - Sat, Aug 1
BUF
Buffalo
SAT
San Antonio
$304 Roundtrip, found 11 hours ago
$304
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Sun, Jul 26 from Buffalo to San Antonio, returning Sat, Aug 1, priced at $304 found 11 hours ago

Alternative airports near San Antonio

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Antonio Intl. SAT. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $450
SAT
San Antonio Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $450

What you need to know for your flight from Buffalo Niagara Intl. to San Antonio Intl.

Buffalo (BUF) to San Antonio (SAT) at a glance

Embark on your journey from Buffalo (BUF) to San Antonio (SAT) with various airlines offering options on this domestic short-haul route. Whether you prefer full-service carriers or budget-friendly choices, you can easily compare schedules and fares to find the best fit for your travel needs. Discover the key details for flights from Buffalo Niagara International Airport to San Antonio International Airport as you plan your exploration of San Antonio's iconic sights and vibrant neighborhoods.

  • Fastest flight duration: around 5 hours in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 1,400 miles (2,250 km)
  • Flights per week: around 12 departures on average
  • Typical fares (one-way): economy tickets often range from $130–$450, depending on seasonality and how far ahead you book

Flights from Buffalo Niagara International Airport (BUF) to San Antonio International Airport (SAT)

Based on recent traveler bookings, here are the top airlines favored for one-stop service from Buffalo to San Antonio. Many passengers opt for layovers at O'Hare International Airport (ORD) with a layover of about 1 hour, Detroit Metropolitan Wayne County Airport (DTW) with a 1 hour and 15-minute layover, or Hartsfield-Jackson Atlanta International Airport (ATL) with a 1 hour and 30-minute layover. This variety allows you to tailor your travel plans by balancing price, total travel time, and cabin class to find the ideal itinerary.

  • American Airlines: This comprehensive airline provides one-stop service and represents around 33% of flights on this route. One-way ticket prices generally range from $150 to $445. Expect about 5 hours of flying time, with a total duration of approximately 6 hours and 15 minutes, including a layover.
  • Delta: As another major player, Delta offers one-stop flights and covers about 30% of departures on this route. One-way fares typically fall between $140 and $520. Travelers can anticipate around 5 hours of in-air time, with the total trip taking roughly 6 hours and 15 minutes, counting the layover.
  • Southwest Airlines: Known for its budget-friendly options, Southwest Airlines provides one-stop service, accounting for approximately 20% of the flights on this route. One-way fares usually range from $130 to $470. The flight time is about 5 hours, with an overall travel time of around 6 hours and 15 minutes, including layover time.
  • United: A full-service option, United operates one-stop flights and makes up roughly 13% of departures on this route. One-way fares typically range from $165 to $520. Passengers can expect about 5 hours of air travel, with the entire journey lasting approximately 6 hours and 15 minutes, including layover time.
  • Frontier Airlines: This low-cost carrier offers one-stop service, representing around 5% of all departures on this route. One-way fares typically range between $130 and $220. Expect to spend about 5 hours in the air, with the total travel time being approximately 6 hours and 15 minutes, factoring in the layover.

Travelers flying from Buffalo to San Antonio have the option to upgrade to first class with American Airlines, enjoying a premium service experience on this route.

Best time to fly from Buffalo (BUF) to San Antonio (SAT)

The most popular months for travelers flying from Buffalo to San Antonio are March, April, and November, when peak temperatures in San Antonio reach up to 70°F in April. If you prefer quieter travel, consider May, the least busy time to visit with temperatures around 76.3°F and typically the lowest average one-way fare (around $218). Flight availability peaks in September, with approximately 16 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 10 flights per week.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $218, roughly 14% cheaper than the yearly average.
  • More budget-friendly months to fly: August and October typically offer average one-way fares of around $238.
  • Most flight options: September has the highest number of flights from Buffalo to San Antonio, with approximately 16 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January53.2°F (11.8°C)Average11$251
February56.1°F (13.4°C)Average10$261
March63.7°F (17.6°C)High12$265
April70.0°F (21.1°C)High13$290
May76.3°F (24.6°C)Low11$218
June82.8°F (28.2°C)Average13$249
July85.3°F (29.6°C)Average12$274
August86.5°F (30.3°C)Average13$238
September81.0°F (27.2°C)Average16$244
October72.5°F (22.5°C)Low11$238
November61.7°F (16.5°C)High13$261
December55.6°F (13.1°C)Low14$272

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Buffalo (BUF) to San Antonio (SAT)

  • Buffalo to Austin (BUF-AUS): Austin-Bergstrom International Airport (AUS) is located approximately 67 miles from San Antonio International Airport (SAT). One-way economy fares for this journey generally range from $125 to $445, influenced by the season and how far in advance you book. This route often features one-stop flights, with common layover points at Charlotte-Douglas International Airport (CLT) and O'Hare International Airport (ORD). Major airlines operating on this route include American Airlines and Delta, with options for business and first-class service available as well.
  • Rochester to San Antonio (ROC-SAT): Greater Rochester International Airport (ROC) lies about 56 miles from Buffalo Niagara International Airport (BUF). One-way economy prices typically vary from $100 to $445, depending on the time of year and booking timing. Travelers can expect one-stop flights on this route, with popular layover airports being O'Hare International Airport (ORD) and Detroit Metropolitan Wayne County Airport (DTW). American Airlines and Delta are the main carriers for this route, and first-class seating is also offered.

How to find the best prices for flights from Buffalo (BUF) to San Antonio (SAT)

Getting some of the best deals on flights from Buffalo to San Antonio is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book 2 to 8 weeks ahead. Departures in the morning, from 5 am to 12 pm, not only offer lower prices but are also the most popular. Additionally, flying on Saturday can yield cheaper rates, while Tuesday remains the most common travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Antonio International Airport from Buffalo Niagara International Airport

San Antonio welcomes travelers from Buffalo with a range of transport options based on price, convenience, and proximity. Here's how to reach San Antonio efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Antonio, with private rides that can be arranged in advance.
  • Car rental: Renting a car from San Antonio International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Antonio International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Antonio International Airport, San Antonio Seaport, a seaport, is located about 0.4 miles away, while San Antonio Station, a train station, is approximately 7.5 miles from the airport.

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) cost?
You can find cheap one-way flights from $129 and cheap return flights from $257 Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) with Expedia. One-way flights usually range from $180 to $1195, and return flights typically cost between $371 and $1174. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
January is the cheapest month to fly from Buffalo, NY (BUF) to San Antonio, TX (SAT), with average return fares around $375. This price is about 11% lower than the average for the year, as travel demand is lower after the holiday season. Other budget-friendly months to consider are August and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Enter BUF to SAT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
The best times to fly from Buffalo (BUF) to San Antonio (SAT) are in January and August. You can expect to pay around $375 for a return flight in January, which is a quieter travel period. August also offers good prices, making it a great time to visit Texas.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
The earliest flight from Buffalo Niagara International Airport (BUF) to San Antonio International Airport (SAT) typically departs at around 5:00 AM, operated by American Airlines. This is a seasonal service active in November, allowing you to start your day early and maximize your time in San Antonio. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
The most popular departure times for flights from Buffalo, NY (BUF) to San Antonio, TX (SAT) are in the early morning, from 6am to 9am. About 40% of passengers prefer this time window. Many major carriers, including American Airlines, Delta and Southwest Airlines, offer flights during this window. This timing works well because it lets you start your travel day early and maximize your time in San Antonio.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Flying from BUF to SAT with a connection usually takes about 6 hours 20 minutes, traveling roughly 1,432 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
You can fly first class between BUF and SAT. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Antonio from Buffalo Niagara Intl. (BUF)?
If you're planning to travel to San Antonio from Buffalo Niagara Intl. (BUF), you can fly into San Antonio Intl. (SAT) Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), Baltimore Washington Intl. Thurgood Marshall (BWI) before reaching San Antonio. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) San Antonio Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
San Antonio Intl.
Roundtrip price
$256
Distance
1431 mi

Book with confidence

Buffalo to San Antonio Flights

The cheapest times to fly from Buffalo to San Antonio

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Buffalo to San Antonio are during the month of August. You can find some of the cheapest flights from Buffalo to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to San Antonio

Sunday is one of the best days to book for cheap flights from Buffalo to San Antonio: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Buffalo to San Antonio

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Buffalo to San Antonio in 2026. You can also book with separate airlines for your outbound and return journeys, from $129 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Buffalo to San Antonio flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Buffalo to San Antonio airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Buffalo to San Antonio Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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