AirHint found the following cheapest return flights from Seoul (ICN) to Chiang Mai (CNX)
in May 2025 (see full year ).
Return flights
10 May
- 15 May
Jeju Air
$ 206
direct
10 May
- 11 May
Jeju Air
$ 210
direct
25 May
- 12 Jun
Jeju Air
$ 210
direct
10 May
- 12 Jun
Jeju Air
$ 210
direct
16 May
- 20 May
AirAsia X
$ 217
14 May
- 21 May
Eastar Jet
$ 218
15 May
- 20 May
Thai AirAsia X
$ 220
17 May
- 20 May
Thai AirAsia X
$ 223
22 May
- 26 May
Eastar Jet
$ 224
20 May
- 29 May
Thai AirAsia X
$ 224
28 May
- 01 Jun
Thai AirAsia X
$ 225
18 May
- 22 May
Thai AirAsia X
$ 226
13 May
- 18 May
Thai AirAsia X
$ 226
22 May
- 14 Jun
Jeju Air
$ 234
direct
14 May
- 19 Jun
Eastar Jet
$ 236
28 May
- 04 Jun
Jeju Air
$ 237
direct
22 May
- 04 Jun
Jeju Air
$ 237
direct
25 May
- 26 Jun
Jeju Air
$ 247
direct
26 May
- 02 Jun
Thai AirAsia X
$ 249
17 May
- 12 Jun
Jeju Air
$ 251
direct
Also check the deals for one-way flights from Seoul to Chiang Mai in May .
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.