AirHint found the following cheapest return flights from Portland (PDX) to Amsterdam (AMS) in August 2026 (see full year).
Return flights
| 26 Aug - 09 Sep | Delta | ||
| 31 Aug - 11 Sep | United | ||
| 23 Aug - 06 Sep | Delta | ||
| 23 Aug - 06 Sep | KLM | direct |
Also check the deals for one-way flights from Portland to Amsterdam in August.
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