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

Return flights

21 May - 31 May	Vueling Airlines
04 May - 17 May	Cathay Pacific
28 May - 28 Jun	Cathay Pacific
25 May - 03 Jun	Cathay Pacific
05 May - 21 May	Vueling Airlines
18 May - 25 May	Vueling Airlines
09 May - 24 May	Vueling Airlines
10 May - 24 May	Vueling Airlines
12 May - 23 May	Vueling Airlines
24 May - 03 Jun	ITA Airways
26 May - 05 Jun	Vueling Airlines
04 May - 24 May	Ryanair
03 May - 20 May	Etihad Airways
30 May - 08 Jun	SWISS
01 May - 21 May	SWISS
30 May - 07 Jun	Air Europa
31 May - 07 Jun	Air Europa
12 May - 04 Jun	British Airways

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Barcelona to Bangkok in May from 515€

Return flights