Cheapest return flights from Seattle to Amsterdam in September from 646€

Best time to book flights for Seattle (SEA) to Amsterdam (AMS) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Amsterdam (AMS) in September 2025 (see full year).

Return flights

16 Sep - 30 Sep Finnair
14 Sep - 21 Sep Icelandair
16 Sep - 30 Sep Air France direct

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

Skyscanner

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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