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

Return flights

08 May - 18 May	SWISS
15 May - 15 Jun	SWISS
06 May - 19 May	SWISS
13 May - 27 May	SWISS
07 May - 22 May	SWISS
10 May - 22 May	Lufthansa
05 May - 14 May	SWISS
01 May - 22 May	SWISS
01 May - 31 May	easyJet
16 May - 22 May	Vueling Airlines
30 May - 14 Jun	easyJet
01 May - 16 May	easyJet
31 May - 06 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 588€

Return flights