Fort Smith Regional Airport operates from just one terminal building. Not sure what to do with that spare time between check in and boarding? Do some research online to discover what sorts of services and amenities are on offer here. For domestic journeys, we recommend arriving 1.5-2 hours before your scheduled departure time. If you're traveling internationally, arrive 2-3 hours ahead of your flight to allow ample time for dropping off bags, security lines and finding your departure gate.