Cheap Southwest Airlines flights Tri-Cities (TRI) to Buffalo (BUF)

You’ll find affordable return Southwest Airlines flights from TRI to BUF by organizing your results from “Price (lowest to highest)” on Expedia. Or look for options for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to travel to Buffalo with Southwest Airlines. You could also find fantastic deals on one-way and return tickets in February.

Search for cheap Southwest Airlines flights from Tri-Cities Regional Airport (TRI) to Buffalo Niagara Intl. Airport (BUF) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To figure out if there’s a direct route from TRI to BUF with Southwest Airlines or another carrier, check the “Nonstop” box when looking for flights.

Sort your results by “Morning” and “Early Morning” to find the earliest departures from TRI to BUF. Leaving early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Catch a Southwest Airlines flight from Tri-Cities Regional Airport (TRI) to Buffalo, and you’ll most likely touch down at Buffalo Niagara Intl. Airport (BUF). This is the airline’s primary hub here.

Changes are generally free within 24 hours of making your booking, but your airline may charge a fee after that. For more details about modifying your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to make changes without additional charges, tick the “Changes included” and “No cancel fee” filters when organizing your next adventure.