AirHint found the following cheapest return flights from Seattle (SEA) to Amsterdam (AMS) in May 2026 (see full year).
Return flights
| 16 May - 22 May | Turkish Airlines | ||
| 02 May - 23 May | Icelandair | ||
| 02 May - 23 May | KLM | direct | |
| 28 May - 15 Jun | Harbour Air | ||
| 28 May - 15 Jun | Air France | direct | |
| 16 May - 22 May | Air France | direct |
Also check the deals for one-way flights from Seattle to Amsterdam in May.
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