Busan (PUS) to Ulaanbaatar (UBN) flights
3 airlines fly nonstop from Busan (PUS) to Ulaanbaatar (UBN): Air Busan, Jeju Air and Jin Air. The two airports are 1,425 miles (2,294 km) apart. There are also 5 ways to fly it with one stop, through Seoul, Beijing and Shanghai and more.
Airlines flying nonstop from PUS to UBN
- BXAir BusanNot in an alliance
- Jeju AirNot in an alliance
- Jin AirNot in an alliance
PUS to UBN with one stop
5 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Seoul (ICN)Korean Air the whole way
OM+4
- Via Beijing (PEK)Air China the whole way
OM - Via Shanghai (PVG)Spring Airlines the whole way
+2
OM
- Via Osaka (KIX)Jeju Air, Air Busan and 3 more, then Miat - Mongolian AirlinesBX+2OM
- Via Tokyo (NRT)Jeju Air, Air Busan and 3 more, then Miat - Mongolian Airlines, Aero Mongolia and 1 moreBX+2OMM0
PUS to UBN: common questions
Which airlines fly nonstop from PUS to UBN?
Air Busan, Jeju Air and Jin Air fly nonstop from Busan (PUS) to Ulaanbaatar (UBN).
How far is Busan from Ulaanbaatar by plane?
Busan (PUS) and Ulaanbaatar (UBN) are 1,425 miles (2,294 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does PUS to UBN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for PUS to UBN with taxes and fees.
Where can I connect between Busan and Ulaanbaatar?
The most direct connections are through Seoul (ICN), Beijing (PEK), Shanghai (PVG), Osaka (KIX) and Tokyo (NRT). On 3 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.