AirHint found the following cheapest return flights from Portland (PDX) to Taipei (TPE) in December 2025 (see full year).
Return flights
| 21 Dec - 05 Jan | Hawaiian Airlines | ||
| 12 Dec - 03 Jan | Delta | ||
| 20 Dec - 05 Jan | Hawaiian Airlines | ||
| 19 Dec - 05 Jan | Alaska Airlines |
Also check the deals for one-way flights from Portland to Taipei in December.
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