Cheapest return flights from Porto to Bangkok in September from $618

Best time to book flights for Porto (OPO) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Porto (OPO) to Bangkok (BKK) in September 2025 (see full year).

Return flights

02 Sep - 17 Sep Austrian Airlines
14 Sep - 24 Sep Austrian Airlines
13 Sep - 30 Sep Austrian Airlines
07 Sep - 17 Sep Austrian Airlines
19 Sep - 30 Sep SWISS
20 Sep - 01 Oct SWISS
21 Sep - 01 Oct Austrian Airlines
13 Sep - 27 Sep Austrian Airlines
15 Sep - 22 Sep KLM
21 Sep - 02 Oct Austrian Airlines
15 Sep - 18 Sep KLM
02 Sep - 14 Sep Turkish Airlines
01 Sep - 13 Sep Austrian Airlines

Also check the deals for one-way flights from Porto to Bangkok in September.

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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