$109 Cheap Frontier Airlines flights Buffalo (BUF) to Knoxville (TYS)

Scoring cheap one-way Frontier Airlines flights from BUF to TYS from $109 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares from $206 for your next exciting getaway.**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.

Look for return or one-way flights to Knoxville in January or December. You could find cheaper fares with Frontier Airlines during these quieter months.

To find cheap Frontier Airlines fares from Buffalo Niagara Intl. Airport (BUF) to McGhee Tyson Airport (TYS), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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 find out if there’s a direct trip from BUF to TYS with Frontier Airlines or another carrier, check the “Nonstop” box when browsing for tickets.

Find Frontier Airlines’s earliest flights from BUF to TYS by selecting our “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures are also 20% less likely to be canceled.**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.

McGhee Tyson Airport (TYS) is the primary Knoxville gateway for Frontier Airlines flights from Buffalo Niagara Intl. Airport (BUF).

Travel from BUF to TYS with Frontier Airlines and enjoy a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can reschedule or cancel your flight, although additional charges may apply if you made your booking over 24 hours ago. Prefer to keep your options open? Use our “No cancel fee” and “Changes included” filters to find flights that won’t charge extra if you have to adjust your plans. To make changes, visit “Trips,” select your flight and click on “Manage Booking” for more information.