Rimini Airport is served by a single, very small and uncluttered terminal. Departures and arrivals are in the ground floor. Check-in desks for all flights can be found immediately upon entering the terminal.
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The security checkpoint is on the far left, followed by a division into gates going into the Schengen area (without passport control) and gates outside the Schengen area (with passport control).
The actual departure floor with the gates to the aircraft is then on the first floor (there are fixed stairs and a lift).