Cheapest return flights from Portland to Bangkok in December from 1147€

AirHint found the following cheapest return flights from Portland (PDX) to Bangkok (BKK) in December 2025 (see full year).

Return flights

15 Dec - 21 Dec Delta
16 Dec - 21 Dec Delta
28 Dec - 07 Jan Alaska Airlines
11 Dec - 21 Dec STARLUX Airlines
01 Dec - 31 Dec Qatar Airways
06 Dec - 03 Jan STARLUX Airlines
12 Dec - 04 Jan STARLUX Airlines

Also check the deals for one-way flights from Portland to Bangkok in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Feel free to contact us with any feedback or request another flight research.