Thessaloniki Airport is open 24 hours a day, so accommodation near the terminal may be useful for late arrivals or very early departures. Unfortunately, however, there is currently no hotel directly on the airport grounds.
Hotels near the airport
The nearest hotel with a free private transfer service is approximately 2.5 km away City Gate Hotel Airport Thessaloniki *** with prices from 66 eur per night.
Hotels in the centre
For cheaper hotels starting from 29 eur per night then look for hotels in the centre of Thessaloniki, just be aware that especially at night the transport takes more than an hour (the bus interval is 30 minutes).