Originally Posted by
pregabalin
But from a previous post the trick is to use the regular change flight flow not going through checkin and the mileage difference is zeroed out.
Useful if trying to SDC and push back a flight more than one day.
Going through the regular change flight process flow works for paid tickets too. Fare difference will be $0 if SDC criteria is met (same fare class available, etc.). Haven't checked to see if I could later push beyond 24 hours of initial flight though. Good to know.