Please be advised of the fact that Korean Air has changed the booking class for the Korean domestic flight. Accordingly the booking class which can be upgraded will be changed as follows:

This change will be effective as of October 1st, 2017, (Based on boarding date)

Booking Class Details

Until September 30, 2017

From October 1, 2017

Y, W, M (Reference 1) 

Y, M (Reference 1) 

M (Reference 1)  class can be applied only to KE1401~KE1410