Originally Posted by
tgj1974
On SK, I know you cannot change once started - dont know if this applies to LH also.
Yes, also applies to *A awards.
Rebooking of flight awards is allowed (date & time) up to one 24 hours before the outward departure time, provided that your points have not expired. Once you have started your award trip, return trip cannot be rebooked nor refunded.
If it is a medical emergency, I would call anyway to see if they would help.