Play Airlines allows passengers to upgrade their flight from a lower cabin class to a higher cabin class through various means, such as travelers can make an upgrade request at the time of booking or after the booking by visiting Play Airlines official website. Moreover, passengers can also upgrade their seats during the online check-in 24 hours before flight departure, or at the last minute from the airline counter at the airport. You can find more details about how do i upgrade on Play Airlines, its benefits, and guidelines by visiting their official website or by going through the blog at the provided link.