Cheapest return flights from Knoxville to Jacksonville in December from 144€

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

Return flights

27 Dec - 15 Jan Allegiant Air direct
30 Dec - 15 Jan Allegiant Air direct
27 Dec - 30 Dec Allegiant Air direct
30 Dec - 30 Dec Allegiant Air direct
27 Dec - 27 Dec Allegiant Air direct
29 Dec - 31 Dec Allegiant Air

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

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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.

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