Seattle-Tacoma International Airport (airport code SEA) is more commonly referred to as Sea-Tac and is the gateway to the Pacific Northwest of the United States. Sea-Tac is 17th busiest airport in the US serving over 31.5 million passengers. The airport has a Central Terminal with four branching concourses, A through D. There are also two Satellite Terminals, North and South. The airport has over 20 airlines and includes international non-stop flights to cities such as Beijing, China, Calgary, Canada, Dubai, UAE, and Seoul, South Korea. Located between the cities of Seattle and Tacoma, the Light Rail Link's SeaTac Airport Station is connected to the fourth floor of the Airport Garage.