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

Return flights

27 Aug - 31 Aug	T'way Air
21 Aug - 25 Aug	Jin Air
18 Aug - 23 Aug	Korean Air
21 Aug - 24 Aug	Jin Air
16 Aug - 19 Aug	Jin Air
26 Aug - 30 Aug	Scoot
22 Aug - 29 Aug	T'way Air
22 Aug - 25 Aug	T'way Air
27 Aug - 03 Sep	T'way Air
22 Aug - 26 Aug	T'way Air
18 Aug - 29 Aug	T'way Air
29 Aug - 05 Sep	T'way Air
25 Aug - 02 Sep	T'way Air
29 Aug - 01 Sep	T'way Air
30 Aug - 01 Sep	Asiana Airlines
30 Aug - 04 Sep	Asiana Airlines

Also check the deals for one-way flights from Cheju to Bangkok 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 Cheju to Bangkok in August from 199€

Return flights