https://flightcancelationnumber.com/how-to-upgrade-air-france-miles/ Flying with Air France is already a comfortable experience, but did you know you can use your Flying Blue Miles to upgrade your seat? Whether you’re flying short-haul within Europe or taking a long-haul journey across the Atlantic, upgrading with miles lets you enjoy premium services without paying full fare. Here’s everything you need to know about upgrading Air France flight with miles.