Cheapest return flights from Seoul to Bangkok in December from $165

AirHint found the following cheapest return flights from Seoul (ICN) to Bangkok (BKK) in December 2025 (see full year).

Return flights

11 Dec - 17 Dec Vietnam Airlines
16 Dec - 21 Dec Vietnam Airlines
13 Dec - 17 Dec Vietnam Airlines
13 Dec - 20 Dec Vietnam Airlines
17 Dec - 23 Dec Vietnam Airlines
15 Dec - 24 Dec Vietnam Airlines
14 Dec - 17 Dec Vietnam Airlines
10 Dec - 20 Dec Vietnam Airlines
09 Dec - 15 Dec Vietnam Airlines
10 Dec - 16 Dec Vietnam Airlines
14 Dec - 27 Jan Vietnam Airlines
11 Dec - 23 Jan Vietnam Airlines
14 Dec - 03 Jan Vietnam Airlines
16 Dec - 16 Jan Vietnam Airlines
15 Dec - 28 Jan Vietnam Airlines
10 Dec - 10 Jan Vietnam Airlines
19 Dec - 03 Jan Vietnam Airlines
19 Dec - 04 Jan Vietnam Airlines
23 Dec - 13 Jan Thai AirAsia X direct
17 Dec - 07 Jan Thai AirAsia X direct

Also check the deals for one-way flights from Seoul to Bangkok in December.

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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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