Originally Posted by
SFO777
Only if KE has an interline agreement with JL and, is so, if the KE ICN agent knows this and agrees to check your bags thru. Absent an interline agreement, it won't work.
Do you really need to check bags?
Interline agreement in and by itself is bad indicator. BA has an interline agreement with AA, but also has a policy of no luggage checked through across separate tickets.
Korean and JAL has a code share operation on the Korea Japan routes. So there is also an interline agreement for sure. But a question for the Korean airlines forum, how does KE handle luggage across tickets?