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

Return flights

19 Aug - 26 Aug	China Southern
01 Aug - 02 Sep	Etihad Airways
29 Aug - 05 Sep	Hainan Airlines
27 Aug - 29 Sep	Hainan Airlines
28 Aug - 04 Sep	Thai VietJet Air
15 Aug - 25 Aug	China Southern
05 Aug - 20 Aug	China Southern
06 Aug - 20 Aug	China Eastern
20 Aug - 26 Aug	China Southern
22 Aug - 27 Aug	China Southern
13 Aug - 03 Sep	Etihad Airways
10 Aug - 17 Aug	Air China
05 Aug - 12 Aug	Air China
19 Aug - 28 Aug	Finnair
13 Aug - 15 Aug	China Southern
26 Aug - 09 Sep	Air China
09 Aug - 09 Sep	Lufthansa
04 Aug - 04 Sep	Iberia
14 Aug - 03 Sep	Air Europa
13 Aug - 02 Sep	Air Europa

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

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 August from $784

Return flights