Ontario International Airport (ONT)

Ontario International Airport uses two passenger terminals: Terminal 2 hosts most international and some domestic airlines, while Terminal 4 handles the bulk of domestic operations. The buildings face each other across a short plaza and are linked landside by a covered walkway; there is no airside connector between them. Walking times are short—most gates are 5–8 minutes from curb to seat, and moving between Terminal 2 and Terminal 4 along the landside walkway takes about 5 minutes. Passengers with reduced mobility can request wheelchair assistance at either terminal curb or use the courtesy cart service that circulates between the buildings. Each terminal has its own TSA checkpoint with PreCheck lanes; standard waits hover around 5–20 minutes but can spike during early-morning Southwest or holiday departures. Terminal 2 also handles arriving international flights, routing passengers through customs before they re-enter the public arrivals hall. Amenities include the Aspire Lounge in Terminal 2 (post-security near Gate 209), coffee bars and grab-and-go outlets in both terminals, and sit-down options such as Wahoo’s Fish Taco and P.F. Chang’s in Terminal 4. Nursing rooms and family restrooms are signed near the center of each concourse, pet-relief areas sit outside each terminal entrance, and elevators plus wide corridors provide step-free circulation.