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

Return flights

13 May - 26 May	SWISS
05 May - 19 May	SWISS
06 May - 19 May	SWISS
05 May - 26 May	SWISS
14 May - 26 May	SWISS
26 May - 09 Jun	SWISS
04 May - 18 May	SWISS
19 May - 26 May	Finnair
12 May - 19 May	Finnair
10 May - 17 May	Ryanair
26 May - 30 May	Finnair
30 May - 13 Jun	TAP
25 May - 13 Jun	Ryanair
22 May - 08 Jun	Finnair

Also check the deals for one-way flights from Lisbon to Bangkok in May.

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 May from $701

Return flights