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

Return flights

28 May - 11 Jun	Aer Lingus
06 May - 30 May	Aer Lingus
01 May - 15 May	Aer Lingus
07 May - 30 May	Icelandair
31 May - 20 Jun	Aer Lingus
15 May - 06 Jun	Icelandair
01 May - 15 May	Air France	direct
06 May - 30 May	Air France	direct
15 May - 06 Jun	KLM	direct
31 May - 20 Jun	Air France	direct
28 May - 11 Jun	Air France	direct

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

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.

Book a cheap hotel in Amsterdam

Cheap car rent in Amsterdam

Cheapest return flights from Seattle to Amsterdam in May from 650€

Return flights