According to Air France 24 hour cancellation policy, a traveller has 24 hours from the time of purchase to cancel a flight reservation. You will get a full refund if you purchase your ticket more than one week before the scheduled departure date of your Air France trip. At any time, Air France has the right to modify cancellations made up to 24 hours in advance. If a tourist books a flight on Air France a week in advance and cancels just a few hours before takeoff, Air France will charge a penalty based solely on the price limits.