When I was flying on a weekly basis, and only had the occasional voucher to deal with, I'd just keep it with me at all times and it was certainly a nuisance but manageable. You actually have to bring the paper voucher to the (currently very short-staffed) airport service desk to book your flight. And do you know what you have to do to actually use these paper vouchers? You can't use them when booking online and you can't use them over the phone. In contrast, American Airlines is still issuing paper vouchers to many passengers that take up to six weeks to be mailed to your home address. United future flight credits expire two years after they are issued. There's a section in their app under “My Trips” that lists your future flight credits and a simple “Book with Credit” button that automatically applies the credit to your booking. United Airlines makes it easy to keep track of and use future flight credits. If you're like me and had to cancel flights when the coronavirus pandemic hit, you most likely received a refund from your airline in the form of a flight voucher. United Airlines Flight Booking Screenshot Amber Gibson In my observations, United Airlines personnel are also more diligent about policing passengers to wear face masks and more consistently wearing their face masks covering both their mouth and nose. Instead of boarding with group one, I hang back far from the madding crowd and wait until they have announced final boarding call before I enter the jet bridge. However, I do not wish to spend any additional time in my seat as other passengers board, and have every single passenger on the plane walk past me. When I fly with American, I am in the first boarding group, and lucky enough to be consistently upgraded to first class. Usually the passengers in the final boarding groups are seated at the back of the plane, so they are waiting in the aisles, squeezing into middle seats and fiddling around trying to find space for their bags in the overhead bins all while surrounded by seated passengers. On the other hand, American Airlines is sticking to their traditional boarding process of dividing passengers into nine groups based on elite status, ticket purchased and other factors.