Nonstop flight route between White Plains, New York, United States and Sidney, Montana, United States:
Departure Airport:
(41°4'0"N by 73°42'26"W)
Arrival Airport:
(47°42'24"N by 104°11'32"W)
Distance from HPN to SDY:
1,562.05 miles (2,513.87 km)
Share this route:
Jump to:
- About this route
- HPN Airport Information
- SDY Airport Information
- Facts about HPN
- Facts about SDY
- 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 SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
About this route:
A direct, nonstop flight between Westchester County Airport (HPN), White Plains, New York, United States and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 1,562 miles (or 2,514 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 relatively short distance between Westchester County Airport and Sidney-Richland Municipal Airport, the route shown on this map most likely still appears to be a straight line.
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: | SDY / KSDY |
| Airport Name: | Sidney-Richland Municipal Airport |
| Location: | Sidney, Montana, United States |
| GPS Coordinates: | 47°42'24"N by 104°11'32"W |
| Area Served: | Sidney, Montana |
| Operator/Owner: | Sidney Richland Airport Authority |
| Airport Type: | Public |
| Elevation: | 1985 feet (605 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SDY |
| More Information: | SDY Maps & Info |
Facts about Westchester County Airport (HPN):
- 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.
- The IATA code for Westchester County Airport is 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 closest airport to Westchester County Airport (HPN) is Flushing Airport (closed 1984) (FLU), which is located 21 miles (34 kilometers) SSW of HPN.
- Westchester County Airport (HPN) has 2 runways.
- This airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a primary commercial service airport.
- 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.
- HPN is nestled between many existing neighborhoods and has many rules that must be followed.
- In June 2010 Air Canada announced it would be dropping service at the airport.
Facts about Sidney-Richland Municipal Airport (SDY):
- The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
- The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 20.94 miles (33.70 km) SSW | Flushing Airport (closed 1984) (FLU) | Flushing, New York, United States |     |
| 2 | 21.79 miles (35.07 km) SSW | LaGuardia Airport (LGA) | New York City, New York, United States | |
| 3 | 23.76 miles (38.24 km) SW | Teterboro Airport (TEB) | Teterboro, New Jersey, United States | |
| 4 | 24.09 miles (38.77 km) NNE | Danbury Municipal Airport (DXR) | Danbury, Connecticut, United States | |
| 5 | 26.33 miles (42.37 km) SSW | East 34th Street Heliport (TSS) | New York City, United States | |
| 6 | 26.64 miles (42.88 km) SW | West 30th Street Heliport (JRA) | New York City, New York, United States | |
| 7 | 26.86 miles (43.23 km) SSW | New York Skyports Inc. Seaplane Base (QNY) | New York City, New York, United States | |
| 8 | 27.96 miles (44.99 km) SSE | Republic Airport (FRG) | East Farmingdale, New York, United States | |
| 9 | 29.75 miles (47.88 km) S | John F. Kennedy International Airport (JFK) | New York City, New York, United States | |
| 10 | 29.78 miles (47.92 km) SSW | Downtown Manhattan Heliport (JRB) | New York City, New York, United States | |
| 11 | 30.99 miles (49.87 km) ENE | Igor I. Sikorsky Memorial Airport (BDR) | Bridgeport, Connecticut, United States | |
| 12 | 32.74 miles (52.68 km) WSW | Essex County Airport (CDW) | Caldwell, New Jersey, United States | |
| 13 | 35.35 miles (56.89 km) SW | Newark Liberty International Airport (EWR) | Newark/Elizabeth, New Jersey, United States | |
| 14 | 36.58 miles (58.87 km) NW | Stewart International Airport (SWF) | Newburgh, New York, United States | |
| 15 | 36.84 miles (59.28 km) ESE | Long Island MacArthur Airport (HAP) | Long Island, Queensland, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,747.41 miles (18,905.58 km) SW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,723.42 miles (18,866.97 km) SW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,722.84 miles (18,866.04 km) SW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,696.87 miles (18,824.24 km) SW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,681.45 miles (18,799.42 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,632.86 miles (18,721.22 km) SW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 7 | 11,628.25 miles (18,713.80 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 11,621.13 miles (18,702.35 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 9 | 11,609.46 miles (18,683.57 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 11,546.34 miles (18,581.98 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,465.33 miles (18,451.61 km) SSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,451.19 miles (18,428.86 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,445.39 miles (18,419.53 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |
| 14 | 11,422.74 miles (18,383.07 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,408.16 miles (18,359.61 km) SSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.33 miles (66.52 km) NE | Sloulin Field International Airport (ISN) | Williston, North Dakota, United States | |
| 2 | 48.66 miles (78.31 km) SW | Dawson Community Airport (GDV) | Glendive, Montana, United States | |
| 3 | 69.41 miles (111.70 km) WNW | L. M. Clayton Airport (OLF) | Wolf Point, Montana, United States | |
| 4 | 76.29 miles (122.77 km) NNW | Sher-Wood Airport (PWD) | Plentywood, Montana, United States | |
| 5 | 90.57 miles (145.76 km) SE | Dickinson Theodore Roosevelt Regional Airport (DIK) | Dickinson, North Dakota, United States | |
| 6 | 111.04 miles (178.70 km) SSE | Bowman Municipal Airport (BWM) | Bowman, North Dakota, United States | |
| 7 | 117.38 miles (188.91 km) WNW | Glasgow International Airport (GGW) | Glasgow, Montana, United States | |
| 8 | 118.10 miles (190.06 km) NNE | Estevan Regional Aerodrome (YEN) | Estevan, Saskatchewan, Canada | |
| 9 | 118.99 miles (191.50 km) SW | Miles City Airport (MLS) | Miles City, Montana, United States | |
| 10 | 131.42 miles (211.49 km) W | Jordan Airport (JDN) | Jordan, Montana, United States | |
| 11 | 139.74 miles (224.89 km) ENE | Minot Air Force Base (MIB) | Minot, North Dakota, United States | |
| 12 | 140.05 miles (225.38 km) ENE | Minot International Airport (MOT) | Minot, North Dakota, United States | |
| 13 | 174.07 miles (280.14 km) ESE | Bismarck Municipal Airport (BIS) | Bismarck, North Dakota, United States | |
| 14 | 189.51 miles (304.99 km) N | Regina International Airport (YQR) | Regina, Saskatchewan, Canada | |
| 15 | 191.53 miles (308.24 km) NNW | CFB Moose Jaw (YMJ) | Moose Jaw, Saskatchewan, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,383.49 miles (16,710.57 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,297.57 miles (16,572.29 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,290.39 miles (16,560.74 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,266.41 miles (16,522.14 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,218.50 miles (16,445.05 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,203.17 miles (16,420.36 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 10,179.29 miles (16,381.94 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 8 | 10,169.42 miles (16,366.06 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 9 | 10,153.64 miles (16,340.65 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 10 | 10,120.11 miles (16,286.69 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 11 | 10,113.85 miles (16,276.63 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 12 | 10,100.83 miles (16,255.67 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 13 | 10,089.33 miles (16,237.15 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 14 | 10,078.56 miles (16,219.83 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 15 | 10,076.48 miles (16,216.49 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |