Sapporo (CTS) to Seoul (ICN) flights
7 airlines fly nonstop from Sapporo (CTS) to Seoul (ICN): Asiana Airlines, Eastar Jet, Jeju Air, Jin Air, Korean Air, T´Way Air and Thai Smile. The two airports are 884 miles (1,422 km) apart. Asiana Airlines is in Star Alliance and Korean Air is in SkyTeam. There are also 17 ways to fly it with one stop, through Hakodate, Aomori and Daegu and more.
Airlines flying nonstop from CTS to ICN
- Asiana AirlinesStar Alliance · bookable with 11 programsWho books it
- 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
- Thai SmileNot in an alliance
Book CTS to ICN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Aeromexico RewardsBooks Korean Air
- Air Canada AeroplanBooks Asiana Airlines
- Air France-KLM Flying BlueBooks Korean Air
- Air New Zealand AirpointsBooks Asiana Airlines
- Alaska Atmos RewardsBooks Korean Air
- ANA Mileage ClubBooks Asiana Airlines
- Avianca LifeMilesBooks Asiana Airlines
- China Eastern Eastern MilesBooks Korean Air
- Delta SkyMilesBooks Korean Air
- Emirates SkywardsBooks Korean Air
- EVA Air Infinity MileageLandsBooks Asiana Airlines
- Garuda Indonesia GarudaMilesBooks Korean Air
- Korean Air SKYPASSBooks Korean Air
- Lufthansa Miles & MoreBooks Asiana Airlines
- SAS EuroBonusBooks Korean Air
- Singapore Airlines KrisFlyerBooks Asiana Airlines
- TAP Miles&GoBooks Asiana Airlines
- Thai Royal Orchid PlusBooks Asiana Airlines
- Turkish Airlines Miles&SmilesBooks Asiana Airlines
- United MileagePlusBooks Asiana Airlines
- Virgin Atlantic Flying ClubBooks Korean Air
CTS to ICN with one stop
17 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Hakodate (HKD)ANA, then Jeju Air
- Via Aomori (AOJ)JAL and ANA, then Korean Air
- Via Daegu (TAE)T´Way Air, then Korean Air
- Via Niigata (KIJ)ANA and Fuji Dream Airlines, then Korean AirJH
- Via Busan (PUS)Air Busan, Eastar Jet and 3 more, then Korean AirBXZE+2
- Via Komatsu (KMQ)ANA, then Korean Air
- Via Sendai (SDJ)Air Do, JAL and 3 more, then Asiana AirlinesHD+2
- Via Okayama (OKJ)ANA, then Korean Air
- Via Hiroshima (HIJ)JAL and ANA, then Jeju Air and Korean Air
- Via Kobe (UKB)Skymark Airlines, Air Do and 1 more, then Korean Air, Asiana Airlines and 2 moreBCHD+1
- Via Osaka (KIX)Peach Aviation the whole way
+1+7 - Via Nagoya (NGO)Skymark Airlines, Air Do and 4 more, then Jeju Air, Korean Air and 2 moreBCHD+3+1
- Via Tokushima (TKS)JAL, then Eastar JetZE
- Via Fukuoka (FUK)Skymark Airlines, JAL and 5 more, then Jeju Air, Korean Air and 6 moreBC+4+5
- Via Tokyo (HND)Skymark Airlines, Air Do and 2 more, then Korean Air, Peach Aviation and 1 moreBCHD+1
CTS to ICN: common questions
Which airlines fly nonstop from CTS to ICN?
Asiana Airlines (Star Alliance), Eastar Jet, Jeju Air, Jin Air, Korean Air (SkyTeam), T´Way Air and Thai Smile fly nonstop from Sapporo (CTS) to Seoul (ICN).
How far is Sapporo from Seoul by plane?
Sapporo (CTS) and Seoul (ICN) are 884 miles (1,422 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book CTS to ICN award flights?
21 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air Canada Aeroplan, Air France-KLM Flying Blue, Air New Zealand Airpoints, Alaska Atmos Rewards, ANA Mileage Club, Avianca LifeMiles, China Eastern Eastern Miles and 13 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does CTS to ICN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for CTS to ICN with taxes and fees.
Where can I connect between Sapporo and Seoul?
The most direct connections are through Hakodate (HKD), Aomori (AOJ), Daegu (TAE), Niigata (KIJ) and Busan (PUS). On 2 of them the same airline flies both flights, for example Peach Aviation through Osaka.
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.