AirHint found the following cheapest return flights from Porto (OPO) to Bangkok (BKK) in August 2026 (see full year).

Return flights

24 Aug - 07 Sep	SWISS
17 Aug - 30 Aug	Aegean Airlines
17 Aug - 31 Aug	Aegean Airlines
23 Aug - 30 Aug	Aegean Airlines
03 Aug - 10 Aug	Aegean Airlines
03 Aug - 29 Aug	Aegean Airlines
16 Aug - 30 Aug	Aegean Airlines
05 Aug - 29 Aug	Aegean Airlines
02 Aug - 15 Aug	Aegean Airlines
15 Aug - 29 Aug	Vueling Airlines
08 Aug - 29 Aug	Ryanair
22 Aug - 05 Sep	Air Europa

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

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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Cheapest return flights from Porto to Bangkok in August from 646€

Return flights