The flight time from Atlanta to Montego Bay can vary depending on whether you opt for a non-stop flight or a connecting flight. flight time from atlanta to montego bay? Non-stop flights are the most time-efficient option, offering a direct journey from ATL to MBJ. On average, non-stop flights typically take around 3 to 4 hours, making it a relatively quick and convenient route to Jamaica. However, if you choose a connecting flight, the total travel time will be longer due to layovers at intermediary airports. Common layover airports for this route may include Miami International Airport (MIA) or Fort Lauderdale-Hollywood International Airport (FLL).