1805 showing an exit Oct 20 as DL9963:
https://www.flightradar24.com/data/aircraft/n827mh
1815 showing an exit Oct 21 as DL9966:
https://www.flightradar24.com/data/aircraft/n839mh
Looks like 1806 is scheduled for a couple of ICN-CAN-ICN-CAN legs to position crews (basing this solely off FR24):
https://www.flightradar24.com/data/aircraft/n830mh