Nonstop flight route between Wilmington, Delaware, United States and Sidney, Montana, United States:
Departure Airport:
(39°40'42"N by 75°36'24"W)
Arrival Airport:
(47°42'24"N by 104°11'32"W)
Distance from ILG to SDY:
1,521.29 miles (2,448.27 km)
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Jump to:
- About this route
- ILG Airport Information
- SDY Airport Information
- Facts about ILG
- Facts about SDY
- Map of Nearest Airports to ILG
- List of Nearest Airports to ILG
- Map of Furthest Airports from ILG
- List of Furthest Airports from ILG
- 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 Wilmington/Philadelphia Regional Airport (ILG), Wilmington, Delaware, United States and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 1,521 miles (or 2,448 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 Wilmington/Philadelphia Regional 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: | ILG / KILG |
| Airport Name: | Wilmington/Philadelphia Regional Airport |
| Location: | Wilmington, Delaware, United States |
| GPS Coordinates: | 39°40'42"N by 75°36'24"W |
| Area Served: | Wilmington, Delaware |
| Operator/Owner: | New Castle County, Delaware |
| Airport Type: | Public |
| Elevation: | 80 feet (24 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from ILG |
| More Information: | ILG 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 Wilmington/Philadelphia Regional Airport (ILG):
- Frontier flies three times a week to Atlanta, Chicago-Midway, Denver, Detroit, and Orlando, while flying once a week to Fort Myers and Tampa.
- After the war ended control of the airport was returned to civil authorities.
- The furthest airport from Wilmington/Philadelphia Regional Airport (ILG) is Margaret River Airport (MGV), which is located 11,724 miles (18,869 kilometers) away in Margaret River, Western Australia, Australia.
- Wilmington/Philadelphia Regional Airport (ILG) has 3 runways.
- On June 29, 2006 a Delta Air Lines affiliate began flights from Atlanta's Hartsfield-Jackson Atlanta International Airport to Wilmington-Philadelphia Regional Airport, the first airline service in six years.
- From 1991 through 1998, again from 2000 to 2006, and from April 2008 until July 1, 2013, Delaware was the only U.S.
- The closest airport to Wilmington/Philadelphia Regional Airport (ILG) is Philadelphia Seaplane BaseChandler Field (PSQ), which is located 21 miles (33 kilometers) NE of ILG.
- Because of Wilmington/Philadelphia Regional Airport's relatively low elevation of 80 feet, planes can take off or land at Wilmington/Philadelphia Regional 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.
- United Airlines served Wilmington until 1991.
Facts about Sidney-Richland Municipal Airport (SDY):
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
- 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.
- 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.
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 20.57 miles (33.11 km) NE | Philadelphia Seaplane BaseChandler Field (PSQ) | Essington, Pennsylvania, United States |     |
| 2 | 21.55 miles (34.69 km) N | Brandywine Airport (OQN) | West Chester, Pennsylvania, United States | |
| 3 | 23.56 miles (37.92 km) NE | Philadelphia International Airport (PHL) | Philadelphia, Pennsylvania, United States | |
| 4 | 24.88 miles (40.04 km) NNW | Chester County G. O. Carlson Airport (CTH) | Coatesville, Pennsylvania, United States | |
| 5 | 33.35 miles (53.67 km) WSW | Phillips Army Airfield (APG) | Aberdeen Proving Ground, Maryland, United States | |
| 6 | 35.67 miles (57.41 km) SE | Millville Municipal Airport (MIV) | Millville, New Jersey, United States | |
| 7 | 36.51 miles (58.76 km) NNE | Wings Field (BBX) | Blue Bell, Pennsylvania, United States | |
| 8 | 38.77 miles (62.39 km) SSE | Dover Air Force Base (DOV) | Dover, Delaware, United States | |
| 9 | 38.84 miles (62.51 km) N | Heritage Field (PTW) | Pottstown, Pennsylvania, United States | |
| 10 | 42.14 miles (67.81 km) NE | Northeast Philadelphia Airport (PNE) | Philadelphia, Pennsylvania, United States | |
| 11 | 43.44 miles (69.90 km) NE | NAS JRB Willow Grove (NXX) | Willow Grove, Pennsylvania, United States | |
| 12 | 44.31 miles (71.32 km) ENE | South Jersey Regional Airport (LLY) | Mount Holly, New Jersey, United States | |
| 13 | 47.63 miles (76.65 km) NW | Lancaster Airport (LNS) | Lancaster, Pennsylvania, United States | |
| 14 | 49.47 miles (79.61 km) WSW | Martin State Airport (MTN) | Baltimore, Maryland, United States | |
| 15 | 51.95 miles (83.61 km) NNW | Reading Regional Airport (RDG) | Reading, Pennsylvania, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,724.45 miles (18,868.62 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,700.58 miles (18,830.21 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,689.14 miles (18,811.80 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,674.90 miles (18,788.89 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,631.32 miles (18,718.74 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 6 | 11,618.99 miles (18,698.90 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 7 | 11,608.63 miles (18,682.24 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 8 | 11,597.58 miles (18,664.45 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,595.15 miles (18,660.53 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,552.80 miles (18,592.38 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,483.03 miles (18,480.11 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,457.17 miles (18,438.48 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,436.21 miles (18,404.74 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 11,434.43 miles (18,401.89 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 15 | 11,388.27 miles (18,327.61 km) WSW | Esperance Airport (EPR) | Esperance, 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 | |