Wondering how to upgrade on Air France? There are several ways to enjoy a higher cabin class. You can upgrade during online check-in, at the airport, or through a special email offer if eligible. Air France also allows upgrades via its bidding system or by redeeming Flying Blue Miles. Upgrades are subject to seat availability and fare conditions. To increase your chances, check your b... https://airlines-updates.com/blog/air-france-upgrade/