Cheapest return flights from Washington to Copenhagen in December from 566€

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

Return flights

31 Dec - 08 Jan Lufthansa
29 Dec - 08 Jan Air France
27 Dec - 01 Jan Lufthansa
29 Dec - 01 Jan Lufthansa
27 Dec - 06 Jan SWISS
27 Dec - 02 Jan SWISS
30 Dec - 06 Jan British Airways
28 Dec - 04 Jan Lufthansa
29 Dec - 08 Jan Scandinavian Airlines direct
29 Dec - 01 Jan Scandinavian Airlines direct

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

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