Nonstop flight route between Washington, D.C. / Virginia, United States and Challis, Idaho, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from IAD to CHL:
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- About this route
- IAD Airport Information
- CHL Airport Information
- Facts about IAD
- Facts about CHL
- 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 CHL
- List of Nearest Airports to CHL
- Map of Furthest Airports from CHL
- List of Furthest Airports from CHL
About this route:
A direct, nonstop flight between Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States and Challis Airport (CHL), Challis, Idaho, United States would travel a Great Circle distance of 1,917 miles (or 3,086 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 Washington Dulles International Airport and Challis Airport, the route shown on this map most likely still appears to be a straight line.
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: | CHL / KLLJ | 
| Airport Names: | 
 | 
| Location: | Challis, Idaho, United States | 
| GPS Coordinates: | 44°31'24"N by 114°13'4"W | 
| Operator/Owner: | City of Challis | 
| Airport Type: | Public | 
| Elevation: | 5072 feet (1,546 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from CHL | 
| More Information: | CHL Maps & Info | 
Facts about Washington Dulles International Airport (IAD):
- The civil engineering firm Ammann and Whitney was named lead contractor.
- A new and permanent C/D concourse is planned as part of the D2 Dulles Development Project.
- Washington Dulles International Airport is a public airport in Dulles, Virginia, 26 miles west of downtown Washington, D.C.
- 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.
- The main terminal was extended in 1996 to 1,240 feet —Saarinen's original design length—which was slightly more than double its originally constructed length of 600 feet.
- 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.
- 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 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.
- Washington Dulles International Airport (IAD) has 5 runways.
- A new train system, dubbed AeroTrain and developed by Mitsubishi, began in 2010 to transport passengers between the concourses and the main terminal.
Facts about Challis Airport (CHL):
- The closest airport to Challis Airport (CHL) is Lemhi County Airport (SMN), which is located 45 miles (72 kilometers) NNE of CHL.
- The furthest airport from Challis Airport (CHL) is Pierrefonds Airport (ZSE), which is located 10,728 miles (17,265 kilometers) away in Saint-Pierre, Réunion.
- Challis Airport (CHL) currently has only 1 runway.
- Because of Challis Airport's high elevation of 5,072 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CHL. Combined with a high temperature, this could make CHL a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- In addition to being known as "Challis Airport", another name for CHL is "LLJ".




