Nonstop flight route between Sembach, Germany and Seattle, Washington, United States:
Departure Airport:
Arrival Airport:
Distance from SEX to BFI:
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- About this route
 - SEX Airport Information
 - BFI Airport Information
 - Facts about SEX
 - Facts about BFI
 - Map of Nearest Airports to SEX
 - List of Nearest Airports to SEX
 - Map of Furthest Airports from SEX
 - List of Furthest Airports from SEX
 - 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 Sembach KaserneSembach Air Base (SEX), Sembach, Germany and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 5,101 miles (or 8,210 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 Sembach KaserneSembach Air Base 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 Sembach KaserneSembach Air Base 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: | SEX / ETAS | 
| Airport Name: | Sembach KaserneSembach Air Base | 
| Location: | Sembach, Germany | 
| GPS Coordinates: | 49°31'41"N by 7°51'56"E | 
| Operator/Owner: | United States with authority from Germany | 
| View all routes: | Routes from SEX | 
| More Information: | SEX 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 Sembach KaserneSembach Air Base (SEX):
- The closest airport to Sembach KaserneSembach Air Base (SEX) is Ramstein Air Base (RMS), which is located only 13 miles (21 kilometers) WSW of SEX.
 - The furthest airport from Sembach KaserneSembach Air Base (SEX) is Chatham Islands (CHT), which is located 11,992 miles (19,299 kilometers) away in Waitangi, Chatham Islands, New Zealand.
 - In 1939, the German Luftwaffe ordered that the area be reserved for use as a fighter base.
 - Despite these efforts, the land was successfully surveyed in August 1952.
 - On 6 December 1957 HQ, USAFE transferred the 19th and 30th TRS and their RB-66s to the 10th TRW.
 
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.
 - 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.
 - 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 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.
 - The August 1946 OAG shows 24 United Airlines weekday departures, 10 Northwest and two or three Pan Am DC-3s to Juneau via Annette Island.
 - In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
 - 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.
 - The Museum of Flight is on the southwest corner of the field.
 
