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

Return flights

27 Aug - 14 Sep	SWISS
27 Aug - 10 Sep	SWISS
28 Aug - 12 Sep	SWISS
30 Aug - 12 Sep	SWISS
13 Aug - 02 Sep	Finnair
22 Aug - 01 Sep	Finnair
18 Aug - 29 Aug	Ryanair
17 Aug - 29 Aug	Vueling Airlines
17 Aug - 30 Aug	Vueling Airlines
13 Aug - 19 Aug	Finnair
21 Aug - 07 Sep	SWISS
08 Aug - 19 Aug	Finnair
01 Aug - 20 Aug	Air Europa
01 Aug - 31 Aug	Air Europa
11 Aug - 25 Aug	Finnair
07 Aug - 21 Aug	Iberia
01 Aug - 08 Aug	Ryanair

Also check the deals for one-way flights from Lisbon 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 Lisbon to Bangkok in August from 590€

Return flights