Updating of all programs 4 3 build 9426
Runway 34 was lengthened to 7500 ft in 1951, to 8500 ft by 1958 and to 11900 ft by 1962. The April 1957 OAG shows 216 departures a week on United, 80 Northwest, 35 Western, 21 Trans-Canada, 20 Pan Am, 20 Pacific Northern and 10 Alaska.
The first jet flights were Pan Am 707s to Honolulu via Portland (OR) in late 1959.
The airport has flights to cities throughout North America, Europe, the Middle East and Asia.
Airport-noise contours were developed, real estate was purchased and some homes were retrofitted to achieve noise mitigation. With a 3–2 vote of the Port of Seattle Commission, the name was reverted to Sea–Tac in early 1984.In 2008 the airport averaged 946 aircraft operations per day, 89% being commercial flights, 10% air taxi operations and 1% transient general aviation.) of space and was designed to support operation by ten controllers, with possible future expansion up to 15.The site and construction method of the tower were designed to maximize visibility and efficacy of radar systems.It is a hub and international gateway to Asia and Europe for Delta Air Lines, which has expanded at Sea–Tac since 2011.The airport is the 28th busiest airport in the world by passenger traffic, serving over 45 million passengers in 2016, and is considered one of the fastest growing in the United States and the world.