AirHint found the following cheapest return flights from Bangkok (BKK) to Barcelona (BCN) in October 2025 (see full year).

Return flights

09 Oct - 15 Oct	Air India
12 Oct - 23 Oct	Air India
02 Oct - 20 Nov	China Eastern
19 Oct - 26 Oct	China Eastern
21 Oct - 28 Oct	China Eastern
12 Oct - 24 Oct	Air India
04 Oct - 10 Oct	China Eastern
14 Oct - 21 Oct	Air India
02 Oct - 18 Oct	Air India
06 Oct - 26 Oct	Vietnam Airlines
03 Oct - 10 Oct	Etihad Airways
22 Oct - 02 Nov	Singapore Airlines

Also check the deals for one-way flights from Bangkok to Barcelona in October.

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 October from 458€

Return flights