Nonstop flight route between Washington, D.C. / Virginia, United States and Castres, Languedoc, France:

About this route:

A direct, nonstop flight between Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States and Castres - Mazamet Airport (DCM), Castres, Languedoc, France would travel a Great Circle distance of 3,991 miles (or 6,423 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 Castres - Mazamet 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 Castres - Mazamet Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Washington Dulles International Airport (IAD):

• 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.
• 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.
• 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.
• 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.
• By the 1980s, the original design, which had mobile lounges meet each plane, was no longer well-suited to Dulles' role as a hub airport.
• 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.

Facts about Castres - Mazamet Airport (DCM):

• Castres - Mazamet Airport (DCM) currently has only 1 runway.
• The closest airport to Castres - Mazamet Airport (DCM) is Carcassonne Airport (CCF), which is located 23 miles (38 kilometers) S of DCM.
• The furthest airport from Castres - Mazamet Airport (DCM) is Chatham Islands (CHT), which is nearly antipodal to Castres - Mazamet Airport (meaning Castres - Mazamet Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,372 miles (19,910 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• Because of Castres - Mazamet Airport's relatively low elevation of 785 feet, planes can take off or land at Castres - Mazamet 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 "Castres - Mazamet Airport", another name for DCM is "Aéroport de Castres - Mazamet".