AirHint found the following cheapest return flights from Lisbon (LIS) to Bangkok (BKK) in August 2025 (see full year).

Return flights

28 Aug - 29 Sep	Etihad Airways
28 Aug - 10 Sep	Etihad Airways
21 Aug - 11 Sep	Wizz Air
25 Aug - 08 Sep	Qatar Airways
25 Aug - 01 Sep	Qatar Airways
28 Aug - 04 Sep	Etihad Airways
31 Aug - 07 Sep	Wizz Air
30 Aug - 14 Sep	TAP
26 Aug - 02 Sep	Air Serbia
23 Aug - 07 Sep	Ryanair
19 Aug - 22 Aug	Ryanair
21 Aug - 28 Aug	Wizz Air
18 Aug - 25 Aug	KLM
19 Aug - 26 Aug	easyJet
21 Aug - 29 Aug	Ryanair
24 Aug - 30 Aug	easyJet
19 Aug - 29 Aug	Ryanair
26 Aug - 30 Aug	Air Serbia
27 Aug - 31 Aug	Etihad Airways
23 Aug - 30 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 695€

Return flights