AirHint found the following cheapest return flights from Portland (PDX) to Amsterdam (AMS) in December 2025 (see full year).
Return flights
| 06 Dec - 14 Dec | Icelandair | ||
| 02 Dec - 09 Dec | Virgin Atlantic | ||
| 23 Dec - 07 Jan | Delta | ||
| 05 Dec - 27 Dec | British Airways | ||
| 30 Dec - 06 Jan | Virgin Atlantic | ||
| 22 Dec - 02 Jan | Delta | direct |
Also check the deals for one-way flights from Portland to Amsterdam in December.
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