Nonstop flight route between Roskilde (near Copenhagen), Denmark and Chicago, Illinois, United States:

About this route:

A direct, nonstop flight between Roskilde Airport (RKE), Roskilde (near Copenhagen), Denmark and Chicago O'Hare International Airport (ORD), Chicago, Illinois, United States would travel a Great Circle distance of 4,243 miles (or 6,828 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 Roskilde Airport and Chicago O'Hare 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 Roskilde Airport and Chicago O'Hare International 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 Roskilde Airport (RKE):

• Roskilde Airport (RKE) has 2 runways.
• Lately Roskilde Airport has been the departure airport of Danish troops deploying to or returning from overseas locations, primarily Afghanistan, due to its more private and secluded atmosphere, compared to the far busier Copenhagen Airport, Kastrup.
• The closest airport to Roskilde Airport (RKE) is Copenhagen Airport, Kastrup (CPH), which is located 21 miles (33 kilometers) E of RKE.
• Because of Roskilde Airport's relatively low elevation of 146 feet, planes can take off or land at Roskilde 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 "Roskilde Airport", other names for RKE include "Københavns Lufthavn, Roskilde" and "Copenhagen Airport, Roskilde".
• The furthest airport from Roskilde Airport (RKE) is Chatham Islands (CHT), which is located 11,539 miles (18,570 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• Roskilde Airport, officially known as Copenhagen Airport, Roskilde, is located 4 nautical miles southeast of Roskilde near the town Tune.

Facts about Chicago O'Hare International Airport (ORD):

• Because of Chicago O'Hare International Airport's relatively low elevation of 668 feet, planes can take off or land at Chicago O'Hare 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.
• Following the closure of the O'Hare Air Reserve Station, the former USAF facilities were redeveloped for air cargo and general aviation.
• The closest airport to Chicago O'Hare International Airport (ORD) is Chicago Executive Airport (PWK), which is located only 9 miles (15 kilometers) N of ORD.
• Chicago O'Hare International Airport (ORD) has 8 runways.
• Commercial passenger flights started in 1955 and by the following year O'Hare was served by American, BOAC, Braniff, Capital, Delta, Eastern, North Central, Pan Am, TWA and United, along with freight airlines Riddle and Slick.
• By the early 1950s, Chicago Midway International Airport, Chicago's primary airport since 1931, had become too crowded despite multiple expansions and could not handle the planned first generation of jets.
• The original Douglas Aircraft C-54 Skymaster transport manufacturing plant on the northeast side of the airport became a United States Air Force Air National Guard and Air Force Reserve facility after World War II.
• Total annual passenger volume at O'Hare reached 30 million in 1968, 40 million in 1976, 60 million in 1990 and 70 million in 1997.
• The furthest airport from Chicago O'Hare International Airport (ORD) is Margaret River Airport (MGV), which is located 11,071 miles (17,817 kilometers) away in Margaret River, Western Australia, Australia.