Seat selection impossible?
 

Hello everyone. I have booked a flight with LATAM Airlines and one of the segments is operated by Korean Air. I know it is a codeshare flight, but neither of the airlines allow me to choose my seat. Has anyone been through this before? Do I have to give up on the idea of getting an aisle seat? I would honestly be willing to pay if necessary...

EDIT: I have both reservation codes and can see my flights on both airlines, still I cannot choose my seat

I think it depends on your ticket fare class.

Some economy fare classes dont allow seat selection until online checkin/at airport/3 days before etc

Some airlines do that for business class tickets too