Cheapest return flights from Portland to Bangkok in August from $819

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

Return flights

12 Aug - 20 Aug Alaska Airlines
05 Aug - 27 Aug STARLUX Airlines
07 Aug - 21 Aug STARLUX Airlines
14 Aug - 28 Aug STARLUX Airlines
15 Aug - 28 Aug STARLUX Airlines
15 Aug - 25 Aug China Airlines
14 Aug - 24 Aug STARLUX Airlines
15 Aug - 24 Aug STARLUX Airlines
12 Aug - 24 Aug STARLUX Airlines
04 Aug - 25 Aug China Airlines
22 Aug - 06 Sep Delta

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

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.

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