AirHint found the following cheapest return flights from Washington (IAD) to Copenhagen (CPH) in January 2026 (see full year).

Return flights

14 Jan - 21 Jan	Scandinavian Airlines
24 Jan - 31 Jan	Scandinavian Airlines
28 Jan - 31 Jan	Scandinavian Airlines
19 Jan - 26 Jan	Icelandair
29 Jan - 05 Feb	Icelandair
09 Jan - 16 Jan	Icelandair
29 Jan - 05 Feb	Scandinavian Airlines	direct
15 Jan - 19 Jan	TAP
01 Jan - 08 Jan	Lufthansa
19 Jan - 26 Jan	Scandinavian Airlines	direct
16 Jan - 07 Feb	TAP
01 Jan - 08 Jan	Scandinavian Airlines	direct
04 Jan - 07 Jan	SWISS

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

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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Cheapest return flights from Washington to Copenhagen in January from 365€

Return flights