A number of Korean Air’s international and domestic flights have been cancelled due to a strike by the pilots’ union.
So far, 12 international routes to Japan, Hong Kong and the Middle East have been affected, while more than 60 domestic services have been halted.
The current schedule of affected international flights is as follows:

The airline has stated that all flights cancelled or delayed due to the strike can be changed at no additional cost or refunded without a penalty.
More information can be found at kr.koreanair.com