AirHint found the following cheapest one-way flights from Portland (PDX) to Amsterdam (AMS) in September 2026 (see full year).
One-Way flights
| 04 Sep | Icelandair | ||
| 12 Sep | WestJet | ||
| 14 Sep | Alaska Airlines | ||
| 21 Sep | KLM | direct | |
| 13 Sep | KLM | direct | |
| 14 Sep | Delta | direct | |
| 12 Sep | KLM | direct | |
| 04 Sep | Delta | direct |
Also check the deals for return flights from Portland to Amsterdam in September.
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