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

Return flights

18 Mar - 25 Mar	Icelandair
24 Mar - 31 Mar	Icelandair
04 Mar - 11 Mar	Icelandair
09 Mar - 18 Mar	Icelandair
23 Mar - 30 Mar	Icelandair
23 Mar - 08 Apr	Icelandair
11 Mar - 18 Mar	Scandinavian Airlines	direct
30 Mar - 03 Apr	Lufthansa
04 Mar - 09 Mar	Lufthansa
04 Mar - 11 Mar	Scandinavian Airlines	direct
23 Mar - 30 Mar	Scandinavian Airlines	direct
23 Mar - 08 Apr	Scandinavian Airlines	direct
09 Mar - 18 Mar	Scandinavian Airlines	direct
27 Mar - 12 Apr	Air Canada
31 Mar - 07 Apr	Air France
25 Mar - 01 Apr	KLM
30 Mar - 06 Apr	KLM
28 Mar - 05 Apr	Air Canada
26 Mar - 02 Apr	KLM
28 Mar - 04 Apr	KLM

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

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 March from 379€

Return flights