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

Return flights

12 May - 19 May	Icelandair
03 May - 15 May	jetBlue
19 May - 26 May	Icelandair
13 May - 20 May	KLM
20 May - 27 May	Icelandair
20 May - 27 May	KLM	direct
17 May - 07 Jun	Air Canada
17 May - 07 Jun	KLM	direct

Also check the deals for one-way flights from Portland 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.

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Cheapest return flights from Portland to Amsterdam in May from $776

Return flights