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

Return flights

31 May - 21 Jun	Cathay Pacific
13 May - 26 May	Shenzhen Airlines
22 May - 04 Jun	Shenzhen Airlines
29 May - 16 Jun	Shenzhen Airlines
25 May - 07 Jun	Shenzhen Airlines
05 May - 12 May	Vueling Airlines
18 May - 31 May	Vueling Airlines
11 May - 18 May	Vueling Airlines
01 May - 10 May	Ryanair
19 May - 26 May	SWISS
21 May - 08 Jun	SWISS
24 May - 01 Jun	SWISS
26 May - 02 Jun	SWISS
19 May - 09 Jun	SWISS
15 May - 15 Jun	SWISS
05 May - 16 Jun	SWISS
03 May - 10 May	Ryanair
02 May - 07 May	Vueling Airlines
14 May - 28 May	Wizz Air Malta
07 May - 14 May	Vueling 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 $597

Return flights