Nonstop flight route between Washington, D.C. / Virginia, United States and Mahé, Seychelles:
Departure Airport:

Arrival Airport:

Distance from IAD to SEZ:
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- About this route
- IAD Airport Information
- SEZ Airport Information
- Facts about IAD
- Facts about SEZ
- Map of Nearest Airports to IAD
- List of Nearest Airports to IAD
- Map of Furthest Airports from IAD
- List of Furthest Airports from IAD
- Map of Nearest Airports to SEZ
- List of Nearest Airports to SEZ
- Map of Furthest Airports from SEZ
- List of Furthest Airports from SEZ
About this route:
A direct, nonstop flight between Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States and Seychelles International Airport (SEZ), Mahé, Seychelles would travel a Great Circle distance of 8,666 miles (or 13,947 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 Washington Dulles International Airport and Seychelles 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 Washington Dulles International Airport and Seychelles 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: | IAD / KIAD |
Airport Name: | Washington Dulles International Airport |
Location: | Washington, D.C. / Virginia, United States |
GPS Coordinates: | 38°56'39"N by 77°27'20"W |
Area Served: | Washington metropolitan area |
Airport Type: | Public |
Elevation: | 313 feet (95 meters) |
# of Runways: | 5 |
View all routes: | Routes from IAD |
More Information: | IAD Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SEZ / FSIA |
Airport Names: |
|
Location: | Mahé, Seychelles |
GPS Coordinates: | 4°40'27"S by 55°31'18"E |
Area Served: | Victoria |
Operator/Owner: | SCAA (Seychelles Civil Aviation Authority) |
Airport Type: | Public / Military |
Elevation: | 10 feet (3 meters) |
# of Runways: | 1 |
View all routes: | Routes from SEZ |
More Information: | SEZ Maps & Info |
Facts about Washington Dulles International Airport (IAD):
- The furthest airport from Washington Dulles International Airport (IAD) is Margaret River Airport (MGV), which is located 11,659 miles (18,763 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Washington Dulles International Airport's relatively low elevation of 313 feet, planes can take off or land at Washington Dulles 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 Washington Dulles International Airport (IAD) is Leesburg Executive Airport (JYO), which is located only 11 miles (17 kilometers) NNW of IAD.
- Washington Dulles International Airport (IAD) has 5 runways.
- Washington Dulles Airport is the busiest airport in the Washington metropolitan area, and second busiest airport in the larger Baltimore–Washington metropolitan area with over 22 million passengers a year.
- Conceived in early planning sessions in 1959, Dulles is one of the few remaining airports to use the mobile lounge for boarding and disembarkation from aircraft, and to transfer passengers between the midfield concourses and to and from the main terminal building.
- Dulles is accessible via the Dulles Access Road/Dulles Greenway and State Route 28.
- United Airlines maintains one of two East Coast hubs at Dulles which handled 56.7% of scheduled air carrier passengers at the airport.JetBlue handled 6.8% of scheduled air carrier passengers.
- Under the development plan, future phases would see the addition of several new midfield concourses and a new south terminal.
Facts about Seychelles International Airport (SEZ):
- A domestic terminal is a short walking distance north of the international terminal and offers inter-island flights with a peak of a departure every 10–15 minutes at busy times which corresponds with international arrivals/departures and every 30 minutes at other times.
- The airport has been home to unmanned aerial vehicles operated by the United States Air Force and possibly the Central Intelligence Agency for operations over Somalia and the Horn of Africa.
- Because of Seychelles International Airport's relatively low elevation of 10 feet, planes can take off or land at Seychelles 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 "Seychelles International Airport", another name for SEZ is "Aéroport International de Seychelles – Pointe Larue".
- Seychelles International Airport (SEZ) currently has only 1 runway.
- The closest airport to Seychelles International Airport (SEZ) is Praslin Island Airport (PRI), which is located 27 miles (44 kilometers) NNE of SEZ.
- The furthest airport from Seychelles International Airport (SEZ) is Atuona Airport (AUQ), which is located 11,024 miles (17,741 kilometers) away in Atuona, Marquesas Islands, French Polynesia.