Play Airlines allows passengers to upgrade their seats to a more comfortable seating class during booking or at check-in. The airlines deliver upgrade options, such as using the miles, paying in cash, or placing a bid if the seat is available. Travelers can get several benefits with Play Airlines Upgrade, such as big seats, delicious meal options, or access to the lounges. If you need assistance with upgrades, you can contact Play customer service or read the blog by Airlines Group Travel at the mentioned link.