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

Return flights

27 May - 02 Jun	Air France
04 May - 11 May	Etihad Airways
30 May - 10 Jun	Air France
30 May - 07 Jun	Air France
11 May - 14 May	Gulf Air
23 May - 30 May	KLM
11 May - 18 May	Air France
08 May - 10 May	Iberojet
01 May - 09 May	Etihad Airways
08 May - 16 May	Finnair
10 May - 18 May	Air France
30 May - 06 Jun	TAP

Also check the deals for one-way flights from Bangkok to Lisbon 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 Bangkok to Lisbon in May from $634

Return flights