The airport has three terminals, each lettered A–C, with a fourth — Terminal D — currently being built.
Terminal A
Terminal A is the older terminal of the existing three. It opened in 1945, was expanded in 1955 and underwent a major renovation in 2015, completely modernising the terminal and updating its look and facilities. Terminal A is mainly used by Air Canada Express, Frontier, and Southwest Airlines.
Terminal B
Terminal B opened in 1997 and was built and opened at the same time as Terminal C. The terminal has three concourses and accommodates flights from Alaska Airlines, Delta Air Lines, United, American Airlines and JetBlue. There is an indoor bridge that connects Terminal B to Terminal C.
Terminal C
Terminal C opened in 1997, at the same time as Terminal B. The two terminals are connected by an indoor bridge. Terminal C facilitates flights from American Airlines and JetBlue.