Air distance from Libreville, Gabon to Cayenne, French Guiana is 4251.7 Miles (6842.4 Kilometers / 3692.1 Nautical Miles).
8 hrs, 49 mins is the flight duration between Libreville and Cayenne. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.