Cheapest return flights from Knoxville to Key West in December from $81

AirHint found the following cheapest return flights from Knoxville (TYS) to Key West (EYW) in December 2025 (see full year).

Return flights

22 Dec - 24 Dec Allegiant Air direct
22 Dec - 28 Dec Allegiant Air direct
22 Dec - 31 Dec Allegiant Air direct
19 Dec - 24 Dec Allegiant Air direct
28 Dec - 31 Dec Allegiant Air direct
19 Dec - 31 Dec Allegiant Air direct
31 Dec - 04 Jan Allegiant Air
31 Dec - 05 Jan Allegiant Air
31 Dec - 03 Jan Allegiant Air
28 Dec - 04 Jan Allegiant Air
19 Dec - 26 Dec Allegiant Air
28 Dec - 03 Jan Allegiant Air
30 Dec - 03 Jan Allegiant Air
22 Dec - 04 Jan Allegiant Air direct
29 Dec - 03 Jan Allegiant Air
27 Dec - 31 Dec Allegiant Air
31 Dec - 04 Jan Allegiant Air direct
28 Dec - 02 Jan Allegiant Air

Also check the deals for one-way flights from Knoxville to Key West in December.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Key West

Cheap car rent in Key West

Feel free to contact us with any feedback or request another flight research.