Nonstop flight route between Alconbury, England, United Kingdom and Seattle, Washington, United States:
Departure Airport:

Arrival Airport:

Distance from AYH to BFI:
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- About this route
- AYH Airport Information
- BFI Airport Information
- Facts about AYH
- Facts about BFI
- Map of Nearest Airports to AYH
- List of Nearest Airports to AYH
- Map of Furthest Airports from AYH
- List of Furthest Airports from AYH
- 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 RAF AlconburyUSAAF Station 102 (AYH), Alconbury, England, United Kingdom and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 4,739 miles (or 7,626 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 large distance between RAF AlconburyUSAAF Station 102 and King County International Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between RAF AlconburyUSAAF Station 102 and King County International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | AYH / EGWZ |
Airport Name: | RAF AlconburyUSAAF Station 102 |
Location: | Alconbury, England, United Kingdom |
GPS Coordinates: | 52°21'47"N by 0°13'22"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from AYH |
More Information: | AYH Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | BFI / KBFI |
Airport Names: |
|
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 RAF AlconburyUSAAF Station 102 (AYH):
- Also in 1942, to bring the station up to Class A airfield standards, the runways were extended to 2,000 yards, and 1,400 yards, with 26 additional hardstands along with the taxiways altered.
- The 501 CSW ensures United Kingdom-based air base groups are resourced, sustained, trained and equipped to exacting command standards in order to provide mission support that enables United States and NATO war fighters to conduct full spectrum flying operations during expeditionary deployments, theatre munitions movements, global command and control communications to forward deployed locations, support for theatre intelligence operations and joint/combined training.
- In the spring of 1938, the Air Ministry acquired about 150 acres of open meadowland at Alconbury Hill, Huntingdonshire, expressly for use as a satellite airfield.
- The closest airport to RAF AlconburyUSAAF Station 102 (AYH) is Cambridge International Airport (CBG), which is located 20 miles (32 kilometers) ESE of AYH.
- The furthest airport from RAF AlconburyUSAAF Station 102 (AYH) is Chatham Islands (CHT), which is located 11,821 miles (19,024 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- The construction attracted the attention of the Luftwaffe as the flying field of RAF Alconbury was attacked by German bombers on 16 September 1940, although no serious damage was done.
Facts about King County International Airport (BFI):
- In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
- It is in the National Plan of Integrated Airport Systems for 2011–2015, which called it a primary commercial service airport.Federal Aviation Administration records say the airport had 34,597 passenger boardings in calendar year 2008, 35,863 in 2009 and 33,656 in 2010.
- Boeing Field, officially King County International Airport, is a public airport owned and operated by King County, five miles south of downtown Seattle, Washington.
- 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.
- 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.
- King County International Airport (BFI) has 2 runways.
- 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.