Nonstop flight route between Knock, Ireland and Concord, California, United States:

About this route:

A direct, nonstop flight between Ireland West Airport Knock (NOC), Knock, Ireland and Buchanan FieldConcord Army Air Base (CCR), Concord, California, United States would travel a Great Circle distance of 4,953 miles (or 7,971 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 Buchanan FieldConcord Army Air 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 Buchanan FieldConcord Army Air 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):

• In addition to being known as "Ireland West Airport Knock", other names for NOC include "Horan International Airport" and "Aerfort Iarthar Éireann".
• Ireland West Airport Knock (NOC) currently has only 1 runway.
• It was voted Ireland's best regional airport in 2006 and 2009 by the Chambers of Commerce of Ireland.
• 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.
• 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 2005 the airport changed its name to Ireland West Airport Knock.
• The closest airport to Ireland West Airport Knock (NOC) is Sligo Airport (SXL), which is located 27 miles (44 kilometers) NNE of NOC.
• Ireland West Airport Knock handled 665,000 passengers last year.
• 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.

Facts about Buchanan FieldConcord Army Air Base (CCR):

• Buchanan FieldConcord Army Air Base (CCR) has 4 runways.
• Because of Buchanan FieldConcord Army Air Base's relatively low elevation of 26 feet, planes can take off or land at Buchanan FieldConcord Army Air Base 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 Buchanan FieldConcord Army Air Base (CCR) is Napa County Airport (APC), which is located only 20 miles (32 kilometers) NW of CCR.
• Buchanan Field does not have scheduled passenger flights.
• Another plane crashed on April 13, 2004, shortly after leaving Buchanan Field.
• The furthest airport from Buchanan FieldConcord Army Air Base (CCR) is Tôlanaro Airport (FTU), which is located 11,334 miles (18,241 kilometers) away in Tôlanaro, Madagascar.
• Buchanan Field Airport is a county-owned public-use airport in Contra Costa County, California, United States.
• In 1946 the War Assets Administration returned the airport to the County.