Ulsan (USN) to Jeju (CJU) flights
2 airlines fly nonstop from Ulsan (USN) to Jeju (CJU): Air Busan and Korean Air. The two airports are 217 miles (350 km) apart. Korean Air is in SkyTeam. There are also 1 way to fly it with one stop, through Seoul.
Airlines flying nonstop from USN to CJU
- BXAir BusanNot in an alliance
- Korean AirSkyTeam · bookable with 10 programsWho books it
Book USN to CJU 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
USN to CJU with one stop
1 connection, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Seoul (GMP)Korean Air and Jin Air the whole way
BX+6
USN to CJU: common questions
Which airlines fly nonstop from USN to CJU?
Air Busan and Korean Air (SkyTeam) fly nonstop from Ulsan (USN) to Jeju (CJU).
How far is Ulsan from Jeju by plane?
Ulsan (USN) and Jeju (CJU) are 217 miles (350 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book USN to CJU 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 USN to CJU cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for USN to CJU with taxes and fees.
Where can I connect between Ulsan and Jeju?
The most direct connections are through Seoul (GMP). On 1 of them the same airline flies both flights, for example Korean Air through Seoul.
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.