Nonstop flight route between White Plains, New York, United States and Knock, Ireland:
Departure Airport:

Arrival Airport:

Distance from HPN to NOC:
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- About this route
- HPN Airport Information
- NOC Airport Information
- Facts about HPN
- Facts about NOC
- Map of Nearest Airports to HPN
- List of Nearest Airports to HPN
- Map of Furthest Airports from HPN
- List of Furthest Airports from HPN
- Map of Nearest Airports to NOC
- List of Nearest Airports to NOC
- Map of Furthest Airports from NOC
- List of Furthest Airports from NOC
About this route:
A direct, nonstop flight between Westchester County Airport (HPN), White Plains, New York, United States and Ireland West Airport Knock (NOC), Knock, Ireland would travel a Great Circle distance of 3,040 miles (or 4,893 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 Westchester County Airport 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 Westchester County Airport 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:
IATA / ICAO Codes: | HPN / KHPN |
Airport Name: | Westchester County Airport |
Location: | White Plains, New York, United States |
GPS Coordinates: | 41°4'0"N by 73°42'26"W |
Area Served: | Westchester County, New York, Fairfield County, Connecticut |
Operator/Owner: | County of Westchester |
Airport Type: | Public-use |
Elevation: | 439 feet (134 meters) |
# of Runways: | 2 |
View all routes: | Routes from HPN |
More Information: | HPN Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | NOC / EIKN |
Airport Names: |
|
Location: | Knock, Ireland |
GPS Coordinates: | 53°54'37"N by 8°49'6"W |
Area Served: | Connacht, Ireland |
Airport Type: | Public |
Elevation: | 665 feet (203 meters) |
# of Runways: | 1 |
View all routes: | Routes from NOC |
More Information: | NOC Maps & Info |
Facts about Westchester County Airport (HPN):
- Westchester County Airport is a county-owned airport in Westchester County, New York, three miles northeast of the central business district of White Plains, in the towns of Harrison, North Castle and Rye Brook.
- The closest airport to Westchester County Airport (HPN) is Flushing Airport (closed 1984) (FLU), which is located 21 miles (34 kilometers) SSW of HPN.
- Because of Westchester County Airport's relatively low elevation of 439 feet, planes can take off or land at Westchester 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.
- The furthest airport from Westchester County Airport (HPN) is Margaret River Airport (MGV), which is located 11,747 miles (18,906 kilometers) away in Margaret River, Western Australia, Australia.
- Also, due to its location near a number of residential neighborhoods, Westchester County Airport instituted a Voluntary Restraint from Flying Program, sometimes referred to as a voluntary curfew, which has helped to ease some of the local concern of noise resulting from airport activity.
- Westchester County Airport is also the current home of the New York Wing of the United States Civil Air Patrol, as well as the Southeastern Group of the New York Wing.
- The airport is presently served by six airlines.
- In June 2009 Cape Air added service to Westchester, with service to Nantucket and Martha's Vineyard in Massachusetts.
- Westchester County Airport (HPN) has 2 runways.
Facts about Ireland West Airport Knock (NOC):
- It was voted Ireland's best regional airport in 2006 and 2009 by the Chambers of Commerce of Ireland.
- Ireland West Airport Knock handled 665,000 passengers last year.
- In 2008 a record 629,000 passengers used the airport, a 13% rise compared to the previous year.
- In 2005 the airport changed its name to Ireland West Airport Knock.
- Ireland West Airport Knock (NOC) currently has only 1 runway.
- 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.
- 2007 was a notable year, with scheduled transatlantic services to New York and Boston commencing in May, operated by the now-defunct Flyglobespan.
- The closest airport to Ireland West Airport Knock (NOC) is Sligo Airport (SXL), which is located 27 miles (44 kilometers) NNE of NOC.
- 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.
- 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.
- In addition to being known as "Ireland West Airport Knock", other names for NOC include "Horan International Airport" and "Aerfort Iarthar Éireann".