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

About this route:

A direct, nonstop flight between Buchanan FieldConcord Army Air Base (CCR), Concord, California, United States and Ireland West Airport Knock (NOC), Knock, Ireland 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 Buchanan FieldConcord Army Air Base and Ireland West Airport Knock, 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 Buchanan FieldConcord Army Air Base and Ireland West Airport Knock. 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 Buchanan FieldConcord Army Air Base (CCR):

• Beginning in the 1990s the Board of Supervisors updated the Buchanan Field Airport Master Plan.
• Buchanan FieldConcord Army Air Base (CCR) has 4 runways.
• 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.
• 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.
• Another plane crashed on April 13, 2004, shortly after leaving Buchanan Field.
• 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.
• In 1977 Buchanan Field reached its peak of activity with 357,000 total operations.

Facts about Ireland West Airport Knock (NOC):

• During September 2011 Ryanair celebrated its 4 millionth passenger through the airport, while Lufthansa announced it would be commencing weekly flights to Düsseldorf in May 2012.
• In 2013, Ryanair launched a weekly summer route to Malaga on thursdays.
• Ireland West Airport Knock is 5.6km south-west of Charlestown, County Mayo, Ireland.
• 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.
• The airport is on the main N17 north – south road, halfway between Galway and Sligo, close to the junction with the N5 east – west Westport – Castlebar – Longford road.
• Ireland West Airport Knock (NOC) currently has only 1 runway.
• 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.
• 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.
• The closest airport to Ireland West Airport Knock (NOC) is Sligo Airport (SXL), which is located 27 miles (44 kilometers) NNE of NOC.