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

Return flights

03 Aug - 24 Aug	Turkish Airlines
12 Aug - 15 Aug	Finnair
09 Aug - 13 Aug	Turkish Airlines
10 Aug - 13 Aug	Turkish Airlines
07 Aug - 14 Aug	Thai Lion Air
10 Aug - 14 Aug	Turkish Airlines
21 Aug - 12 Sep	TAP

Also check the deals for one-way flights from Bangkok to Lisbon 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 Bangkok to Lisbon in August from $944

Return flights