Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Seattle, Washington, United States:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 1,722 miles (or 2,771 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between St. Louis Downtown Airport and King County International Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about St. Louis Downtown Airport (CPS):

• The two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
• The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
• Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.

Facts about King County International Airport (BFI):

• Helijet, a helicopter airline based at Vancouver International Airport in British Columbia, scheduled Sikorsky S-76s to the Victoria Harbour Heliport in British Columbia and on to Helijet's Vancouver Harbour Heliport near downtown Vancouver, B.C.
• King County International Airport (BFI) has 2 runways.
• The airport's property is mostly in Seattle just south of Georgetown, with its southern tip extending into Tukwila.
• In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
• The closest airport to King County International Airport (BFI) is Renton Municipal Airport (RNT), which is located only 5 miles (8 kilometers) ESE of BFI.
• The initial assembly of the 737 was at Boeing Field in the 1960s because the factory in Renton was at capacity building the 707 and 727.
• The furthest airport from King County International Airport (BFI) is Tôlanaro Airport (FTU), which is located 10,775 miles (17,341 kilometers) away in Tôlanaro, Madagascar.
• Because of King County International Airport's relatively low elevation of 21 feet, planes can take off or land at King County International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Boeing Field/King County International Airport covers 634 acres at an elevation of 21 feet above mean sea level.