AirHint found the following cheapest return flights from Seoul (ICN) to Chiang Mai (CNX)
in December 2025 (see full year ).
Return flights
05 Dec
- 07 Dec
China Southern
$ 299
06 Dec
- 07 Dec
Malaysia Airlines
$ 322
24 Dec
- 05 Jan
China Southern
$ 350
21 Dec
- 05 Jan
China Southern
$ 352
11 Dec
- 14 Dec
Malaysia Airlines
$ 378
01 Dec
- 05 Dec
Malaysia Airlines
$ 378
01 Dec
- 07 Dec
Malaysia Airlines
$ 378
01 Dec
- 04 Dec
Malaysia Airlines
$ 378
08 Dec
- 13 Dec
Malaysia Airlines
$ 378
06 Dec
- 13 Dec
Malaysia Airlines
$ 378
06 Dec
- 11 Dec
Malaysia Airlines
$ 378
07 Dec
- 13 Dec
Malaysia Airlines
$ 378
18 Dec
- 03 Jan
Malaysia Airlines
$ 402
18 Dec
- 15 Jan
Malaysia Airlines
$ 409
29 Dec
- 02 Jan
China Southern
$ 448
21 Dec
- 06 Jan
China Southern
$ 448
22 Dec
- 07 Jan
China Southern
$ 448
25 Dec
- 01 Jan
China Southern
$ 448
28 Dec
- 03 Jan
China Southern
$ 448
16 Dec
- 14 Jan
China Southern
$ 448
Also check the deals for one-way flights from Seoul to Chiang Mai in December .
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.