Originally Posted by
Dr. HFH
I just don't understand why. What difference does it make to QR whether you upgrade in advance or on departure?
And I would add that an upgrade booked in advance might use a seat QR could have sold to a customer whereas an airport upgrade just fill a vacant seat that QR won't sell (if they have any doubt, like it happened to me when I requested the last J seat for an airport upgrade, they will make you wait until 1 hour prior to the flight to confirm your upgrade) so they should even thank better airport upgrade customers...