Montego Bay Airport uses 1 terminal common to all departures and arrivals.
The building is quite small and very clear and can be walked through in 10 minutes.
The check-in desks for departures are on the left and the arrivals hall is on the right when viewed from the outside.
Queues for security can reach up to 20 minutes. Passport control after arrival is usually quick and you will usually wait no more than 15-30 minutes.
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Transfer between flights
Montego Bay is not a typical transfer hub. Currently, no airline offers guaranteed transfers here, partly because the airport does not have a direct transfer option.
You always have to go through immigration, enter Jamaica and check in again.