Originally Posted by
ranskis
Has someone used this feature on a comfort flex or on a biz ticket? Since I can check in 48 hours before the flight, can I goshow on a flight the previous evening or next morning? Or it needs to be on the same calendar day? I guess this only works when both flights are open for online check-in?
You can only change flights on the day of your original departure date. The option becomes available the very same second the departure date has arrived (midnight). It has worked for me like that in the recent past without any issues.