Seoul (ICN) to Chiang Mai (CNX) flights
6 airlines fly nonstop from Seoul (ICN) to Chiang Mai (CNX): Air Busan, Eastar Jet, Jeju Air, Jin Air, Korean Air and T´Way Air. The two airports are 2,100 miles (3,380 km) apart. Korean Air is in SkyTeam. There are also 19 ways to fly it with one stop, through Kunming, Hanoi and Chongqing and more.
Airlines flying nonstop from ICN to CNX
- BXAir BusanNot in an alliance
- ZEEastar JetNot in an alliance
- Jeju AirNot in an alliance
- Jin AirNot in an alliance
- Korean AirSkyTeam · bookable with 10 programsWho books it
- T´Way AirNot in an alliance
Book ICN to CNX with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Aeromexico RewardsBooks Korean Air
- Air France-KLM Flying BlueBooks Korean Air
- Alaska Atmos RewardsBooks Korean Air
- China Eastern Eastern MilesBooks Korean Air
- Delta SkyMilesBooks Korean Air
- Emirates SkywardsBooks Korean Air
- Garuda Indonesia GarudaMilesBooks Korean Air
- Korean Air SKYPASSBooks Korean Air
- SAS EuroBonusBooks Korean Air
- Virgin Atlantic Flying ClubBooks Korean Air
ICN to CNX with one stop
19 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Kunming (KMG)China Eastern Airlines the whole way
- Via Hanoi (HAN)Jeju Air, Korean Air and 5 more, then Thai AirAsia+4
- Via Chongqing (CKG)Air China and Asiana Airlines, then West Air (China)
PN - Via Shanghai (PVG)Spring Airlines and China Eastern Airlines the whole way
+4
- Via Chengdu (TFU)Sichuan Airlines, Asiana Airlines and 1 more, then Chengdu Airlines3UEU
- Via Guangzhou (CAN)China Southern Airlines the whole way
- Via Xian (XIY)Korean Air, China Eastern Airlines and 1 more, then Spring Airlines
- Via Hong Kong (HKG)HK Express the whole way
+7
- Via Busan (PUS)Korean Air, then Eastar Jet and Air BusanZEBX
- Via Beijing (PEK)Air China the whole way
- Via Taipei (TPE)EVA Air and China Airlines the whole way
+6
+1 - Via Yangon (RGN)Myanmar Airways International the whole way8M8M
- Via Bangkok (DMK)Thai Lion Air and Thai AirAsia the whole way
DD - Via Bangkok (BKK)Thai Airways International and Thai Vietjet Air the whole way+6
VZ+1 - Via Ho Chi Minh City (SGN)VietJet Air the whole way+3
ICN to CNX: common questions
Which airlines fly nonstop from ICN to CNX?
Air Busan, Eastar Jet, Jeju Air, Jin Air, Korean Air (SkyTeam) and T´Way Air fly nonstop from Seoul (ICN) to Chiang Mai (CNX).
How far is Seoul from Chiang Mai by plane?
Seoul (ICN) and Chiang Mai (CNX) are 2,100 miles (3,380 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book ICN to CNX award flights?
10 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air France-KLM Flying Blue, Alaska Atmos Rewards, China Eastern Eastern Miles, Delta SkyMiles, Emirates Skywards, Garuda Indonesia GarudaMiles, Korean Air SKYPASS and 2 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does ICN to CNX cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for ICN to CNX with taxes and fees.
Where can I connect between Seoul and Chiang Mai?
The most direct connections are through Kunming (KMG), Hanoi (HAN), Chongqing (CKG), Shanghai (PVG) and Chengdu (TFU). On 12 of them the same airline flies both flights, for example China Eastern Airlines through Kunming.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.