The Airport is located in SeaTac, Washington. It serves the cities of Seattle and Tacoma, as well as the rest of western Washington state.

It is the 15th busiest airport in th U.S - handling more than 33.2million passengers in 2012. Sea-Tac`s Cargo operation rank 21st in the U.S. The airport also handle ship operation. The passenger cruise terminals at Pier 66 and Smith Cove Terminal handled 202 ship calls and an estimated 934,900 passenger during the 2012 season.

The Airport is the main HUB for Alaska Airlines and Horizon Air.