$142 Cheap Frontier Airlines flights Miami (MIA) to Knoxville (TYS)

You can find affordable round-trip Frontier Airlines flights from $262 from MIA to TYS by sorting your results from "Price (lowest to highest)" on Expedia. Or look for deals from $142 for a one-way journey.**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.

Begin your search one to three months ahead of your travel date to get cheap fares on Frontier Airlines flights from Miami Intl. Airport (MIA) to McGhee Tyson Airport (TYS). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic flights.*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.

Search Frontier Airlines's earliest flights from MIA to TYS by checking our "Early Morning" and "Morning" filters. Not only will you arrive at your destination sooner, early departures also have a 20% less chance of being 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.

A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to depart from MIA to TYS with Frontier Airlines. Plus, by joining Expedia's free One Key™ program, you can earn OneKeyCash™* alongside Frontier Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.