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

Return flights

31 May - 14 Jun	Vueling Airlines
18 May - 31 May	Air China
11 May - 23 May	Air China
18 May - 28 May	Air China
18 May - 04 Jun	Austrian Airlines
02 May - 10 May	Vueling Airlines
09 May - 19 May	Vueling Airlines
03 May - 13 May	Vueling Airlines
28 May - 25 Jun	Vueling Airlines
01 May - 16 May	Wizz Air Malta
01 May - 15 May	Oman Air
21 May - 24 May	Air China
14 May - 17 Jun	Air China
18 May - 02 Jun	Air China
18 May - 03 Jun	Air China
12 May - 02 Jun	Air China
01 May - 23 May	Vueling Airlines
18 May - 15 Jun	Condor
30 May - 30 Jun	SWISS
18 May - 01 Jun	Austrian Airlines

Also check the deals for one-way flights from Barcelona 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 Barcelona to Bangkok in May from 577€

Return flights