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

Return flights

01 May - 09 May	Thai Lion Air
25 May - 15 Jun	KLM
01 May - 08 May	Thai Lion Air
30 May - 05 Jun	KLM
30 May - 06 Jun	KLM
14 May - 21 May	Hainan Airlines
23 May - 06 Jun	Gulf Air
14 May - 30 Jun	Austrian Airlines
08 May - 14 May	Austrian Airlines
14 May - 26 May	Austrian Airlines
07 May - 13 May	SWISS
24 May - 05 Jun	Air Europa

Also check the deals for one-way flights from Bangkok to Barcelona 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 Barcelona in May from 556€

Return flights