AirHint found the following cheapest return flights from Portland (PDX) to Taipei (TPE) in December 2025 (see full year).
Return flights
| 15 Dec - 22 Dec | Delta | ||
| 12 Dec - 18 Jan | United | ||
| 20 Dec - 26 Dec | Hawaiian Airlines |
Also check the deals for one-way flights from Portland to Taipei in December.
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