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

About this route:

A direct, nonstop flight between Ireland West Airport Knock (NOC), Knock, Ireland and Napa County Airport (APC), Napa, California, United States would travel a Great Circle distance of 4,947 miles (or 7,962 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 Napa County 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 Ireland West Airport Knock and Napa County 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 Ireland West Airport Knock (NOC):

• In recent years Ryanair has grown operations and it is the largest airline to serve the airport with 14 scheduled routes.
• 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.
• 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 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 handled 665,000 passengers last year.
• In 2005 the airport changed its name to Ireland West Airport Knock.
• 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.
• On 21 February 2007, the Government of Ireland announced that it was making a €27 million capital grant.

Facts about Napa County Airport (APC):

• The closest airport to Napa County Airport (APC) is Marin County Airport (NOT), which is located only 16 miles (25 kilometers) WSW of APC.
• In addition to being known as "Napa County Airport", another name for APC is "Napa Army Airfield".
• Napa County Airport is a public airport five miles south of Napa, in Napa County, California.
• The furthest airport from Napa County Airport (APC) is Tôlanaro Airport (FTU), which is located 11,330 miles (18,233 kilometers) away in Tôlanaro, Madagascar.
• Napa County Airport (APC) has 3 runways.
• The airport was built by the United States Army Air Forces about 1942, and was known as Napa Flight Strip.
• Because of Napa County Airport's relatively low elevation of 35 feet, planes can take off or land at Napa County 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.