Cheapest return flights from Portland to Amsterdam in September from 766€

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

Return flights

20 Sep - 24 Sep Frontier Airlines
28 Sep - 18 Oct Icelandair
19 Sep - 29 Sep Frontier Airlines
18 Sep - 28 Sep Frontier Airlines
17 Sep - 11 Oct Icelandair
17 Sep - 30 Sep United
29 Sep - 06 Oct Delta direct
17 Sep - 29 Sep Delta
28 Sep - 18 Oct KLM direct
19 Sep - 29 Sep KLM direct
20 Sep - 24 Sep KLM direct

Also check the deals for one-way flights from Portland 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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