Cheapest return SEA–CPH flights, May

AirHint found the following cheapest return flights from Seattle (SEA) to Copenhagen (CPH) in May 2026 (see full year).

Return flights

06 May - 10 May Lufthansa
03 May - 10 May Lufthansa
02 May - 09 May Lufthansa
06 May - 11 May Delta
01 May - 11 May Air France
07 May - 11 May Delta
06 May - 13 May Delta
07 May - 12 May KLM
11 May - 19 May Icelandair
05 May - 18 May Icelandair
28 May - 04 Jun Icelandair
29 May - 05 Jun Icelandair
30 May - 06 Jun Icelandair
25 May - 01 Jun Icelandair
26 May - 02 Jun Icelandair
27 May - 03 Jun Icelandair
31 May - 16 Jun Icelandair
25 May - 08 Jun Icelandair
31 May - 16 Jun Scandinavian Airlines direct
26 May - 02 Jun Scandinavian Airlines direct

Also check the deals for one-way flights from Seattle to Copenhagen in May.

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