Cheapest return flights from Knoxville to Zagreb in December from $1113

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

Return flights

03 Dec - 07 Dec Allegiant Air
24 Dec - 04 Jan Allegiant Air
23 Dec - 04 Jan Allegiant Air
25 Dec - 04 Jan Allegiant Air

Also check the deals for one-way flights from Knoxville to Zagreb 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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