Air distance from San Marino, San Marino to Castries, Saint Lucia is 4700.1 Miles (7564 Kilometers / 4081.5 Nautical Miles).
Flight duration time from San Marino to Castries is 9 hrs, 45 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.