Several alternatives are available from Air france upgrade your ticket. On their website, you may manage your booking or check for any upgrade offers while you are making a reservation. You can also upgrade your ticket class by using Flying Blue Miles. Depending on your status as a Flying Blue Elite member, you can be qualified for free upgrades. In addition, Air France offers the Upgrade Challenge programme, which lets users compete for upgrades. Last but not least, you might ask about last-minute upgrades at the airport, pending availability. The availability of upgrades is constrained, and fees or restrictions could apply depending on the fare and the destination.