Nonstop flight route between Knock, Ireland and Rapid City, South Dakota, United States:

About this route:

A direct, nonstop flight between Ireland West Airport Knock (NOC), Knock, Ireland and Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States would travel a Great Circle distance of 4,000 miles (or 6,438 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 Ireland West Airport Knock and Ellsworth Air Force Base, 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 Ireland West Airport Knock and Ellsworth Air Force Base. 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 Ireland West Airport Knock (NOC):

• Ireland West Airport Knock (NOC) currently has only 1 runway.
• The closest airport to Ireland West Airport Knock (NOC) is Sligo Airport (SXL), which is located 27 miles (44 kilometers) NNE of NOC.
• The furthest airport from Ireland West Airport Knock (NOC) is Ryan's Creek Aerodrome (SZS), which is located 11,934 miles (19,206 kilometers) away in Stewart Island, New Zealand.
• In 2013, Ryanair launched a weekly summer route to Malaga on thursdays.
• In addition to being known as "Ireland West Airport Knock", other names for NOC include "Horan International Airport" and "Aerfort Iarthar Éireann".
• Because of Ireland West Airport Knock's relatively low elevation of 665 feet, planes can take off or land at Ireland West Airport Knock 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.
• Since 2003, flag-carrier, low-cost and regional airlines including Aer Lingus, MyTravelLite, Bmibaby, Ryanair, Aer Arann, flybe, Lufthansa and EasyJet have added routes to the UK and mainland Europe.
• The installation of the Category II Instrument Landing System in April 2009 has resulted in a significant reduction in the number of flight diversions to other airports due to poor visibility – the airport is 200 metres above sea level.
• Ireland West Airport Knock handled 665,000 passengers last year.

Facts about Ellsworth Air Force Base (RCA):

• The closest airport to Ellsworth Air Force Base (RCA) is Rapid City Regional Airport (RAP), which is located only 7 miles (11 kilometers) S of RCA.
• Air Defense Command deactivated the Ellsworth radar site on 15 August 1962 and the 740th was discontinued.
• To provide air defense of the base, the United States Army established the Ellsworth AFB Defense Area in 1957 and constructed Nike-Ajax Surface-to-air missile sites for air defense.
• The furthest airport from Ellsworth Air Force Base (RCA) is Sir Gaëtan Duval Airport (RRG), which is located 10,579 miles (17,026 kilometers) away in Rodrigues Island, Mauritius.
• In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
• The installation changed names a few more times during its early years.
• Ellsworth Air Force Base is a United States Air Force base located approximately 10 miles northeast of Rapid City, South Dakota just north of Box Elder, South Dakota.
• Military organizations periodically upgrade manpower and machines from time to time to meet new national security requirements and Ellsworth Air Force Base's organizations were no exception.
• Internationally, the destruction of the Berlin Wall in October 1989 symbolized the imminent demise of the Soviet Union over the next several months.
• Ellsworth's population of approximately 8,000 includes military members, family members and civilian employees.