AirHint found the following cheapest return flights from Seattle (SEA) to Copenhagen (CPH) in April 2026 (see full year).
Return flights
| 08 Apr - 13 Apr | British Airways | ||
| 14 Apr - 21 Apr | Icelandair | ||
| 07 Apr - 18 Apr | Delta | ||
| 09 Apr - 16 Apr | Icelandair | ||
| 24 Apr - 01 May | Icelandair | ||
| 04 Apr - 11 Apr | Icelandair |
Also check the deals for one-way flights from Seattle to Copenhagen in April.
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