Cheapest return flights from Denver to Ljubljana in December from 791€

AirHint found the following cheapest return flights from Denver (DEN) to Ljubljana (LJU) in December 2025 (see full year).

Return flights

08 Dec - 15 Dec Lufthansa
31 Dec - 07 Jan Lufthansa
09 Dec - 16 Dec Lufthansa
30 Dec - 06 Jan Lufthansa
11 Dec - 18 Dec Lufthansa
10 Dec - 17 Dec Air Canada
24 Dec - 31 Dec Lufthansa
29 Dec - 05 Jan Air Canada
12 Dec - 19 Dec Turkish Airlines
15 Dec - 22 Dec Lufthansa
14 Dec - 21 Dec Air Canada
17 Dec - 24 Dec Lufthansa
21 Dec - 28 Dec SWISS
28 Dec - 04 Jan Frontier Airlines

Also check the deals for one-way flights from Denver to Ljubljana in December.

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