Billings Logan International Airport has a single passenger terminal with two concourses that are divided between the departure and arrival areas. The terminal opens two hours before the first flight at 4 am.
The baggage claim and arrivals area are near the car rental counters on the left side from the main entrance, while the check-in ticketing facilities are near the security screening and concourses area.
The concourses A and B house all of the gates. A1 to A3 are located in concourse A, and B1 to B4 are in concourse B.