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

Return flights

31 Aug - 14 Sep	SWISS
20 Aug - 22 Sep	Lufthansa
29 Aug - 12 Sep	Ryanair
20 Aug - 10 Sep	KLM
30 Aug - 12 Sep	Air Europa
27 Aug - 10 Sep	Air France
13 Aug - 27 Aug	Ryanair
22 Aug - 29 Aug	IndiGo
31 Aug - 07 Sep	Air Europa
19 Aug - 04 Sep	Austrian Airlines
18 Aug - 27 Aug	Iberia
17 Aug - 29 Aug	Air Europa
16 Aug - 22 Aug	IndiGo
19 Aug - 06 Sep	Austrian Airlines
11 Aug - 25 Aug	Ryanair
21 Aug - 30 Aug	easyJet
31 Aug - 06 Sep	Iberia
06 Aug - 17 Aug	Ryanair
13 Aug - 26 Aug	Ryanair
05 Aug - 30 Aug	easyJet

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 643€

Return flights