Cheapest return flights from Washington to Belgrade in December from $775

AirHint found the following cheapest return flights from Washington (IAD) to Belgrade (BEG) in December 2025 (see full year).

Return flights

27 Dec - 17 Jan Lufthansa
01 Dec - 27 Dec Turkish Airlines
14 Dec - 12 Jan Frontier Airlines
24 Dec - 17 Jan Air France
26 Dec - 17 Jan Austrian Airlines
21 Dec - 21 Jan Frontier Airlines
21 Dec - 23 Jan Frontier Airlines
26 Dec - 09 Jan Austrian Airlines
18 Dec - 10 Jan Frontier Airlines
22 Dec - 17 Jan Icelandair
21 Dec - 25 Jan Frontier Airlines

Also check the deals for one-way flights from Washington to Belgrade in December.

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