Nonstop flight route between Pittsburgh, Pennsylvania, United States and Seattle, Washington, United States:
Departure Airport:
Arrival Airport:
Distance from AGC to BFI:
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- About this route
 - AGC Airport Information
 - BFI Airport Information
 - Facts about AGC
 - Facts about BFI
 - Map of Nearest Airports to AGC
 - List of Nearest Airports to AGC
 - Map of Furthest Airports from AGC
 - List of Furthest Airports from AGC
 - Map of Nearest Airports to BFI
 - List of Nearest Airports to BFI
 - Map of Furthest Airports from BFI
 - List of Furthest Airports from BFI
 
About this route:
A direct, nonstop flight between Allegheny County Airport (AGC), Pittsburgh, Pennsylvania, United States and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 2,137 miles (or 3,440 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 Allegheny County Airport and King County International Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | AGC / KAGC | 
| Airport Name: | Allegheny County Airport | 
| Location: | Pittsburgh, Pennsylvania, United States | 
| GPS Coordinates: | 40°21'15"N by 79°55'48"W | 
| Operator/Owner: | Allegheny County Airport Authority | 
| Airport Type: | Public | 
| Elevation: | 1252 feet (382 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from AGC | 
| More Information: | AGC Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | BFI / KBFI | 
| Airport Names: | 
                    
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| Location: | Seattle, Washington, United States | 
| GPS Coordinates: | 47°31'48"N by 122°18'6"W | 
| Area Served: | Seattle, Washington | 
| Airport Type: | Public | 
| Elevation: | 21 feet (6 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from BFI | 
| More Information: | BFI Maps & Info | 
Facts about Allegheny County Airport (AGC):
- Allegheny County Airport (AGC) has 2 runways.
 - The airport had a Hollywood big screen moment in 2004's The Mothman Prophecies, serving as the small "Pt.
 - The closest airport to Allegheny County Airport (AGC) is Forbes Field (FOE), which is located only 6 miles (10 kilometers) NNW of AGC.
 - The furthest airport from Allegheny County Airport (AGC) is Margaret River Airport (MGV), which is located 11,499 miles (18,506 kilometers) away in Margaret River, Western Australia, Australia.
 - In 1981, the Pittsburgh History and Landmarks Foundation added the Allegheny County Airport to their List of Historic Landmarks.
 
Facts about King County International Airport (BFI):
- 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.
 - 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.
 - 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.
 - Boeing Field/King County International Airport covers 634 acres at an elevation of 21 feet above mean sea level.
 - King County International Airport (BFI) has 2 runways.
 - Boeing Field, officially King County International Airport, is a public airport owned and operated by King County, five miles south of downtown Seattle, Washington.
 - 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.
 - Except for the World War II period, when it was taken over by the U.S.
 - Passenger terminal, Boeing Field
 - The King County International Airport contracts with the King County Sheriff's Office for police services.
 - 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.
 
