Air distance from Majuro, Marshall Islands to Castries, Saint Lucia is 8597.3 Miles (13836.1 Kilometers / 7465.9 Nautical Miles).
Flight duration time from Majuro to Castries is 17 hrs, 51 mins. 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.