Air distance from Libreville, Gabon to Guam, USA is 9231 Miles (14855.9 Kilometers / 8016.2 Nautical Miles).
19 hrs, 10 mins is the flight duration between Libreville and Guam. 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.