Nonstop flight route between Sidney, Montana, United States and Alliance, Nebraska, United States:
Departure Airport:
(47°42'24"N by 104°11'32"W)
Arrival Airport:
(42°3'11"N by 102°48'14"W)
Distance from SDY to AIA:
396.48 miles (638.07 km)
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Jump to:
- About this route
- SDY Airport Information
- AIA Airport Information
- Facts about SDY
- Facts about AIA
- Map of Nearest Airports to SDY
- List of Nearest Airports to SDY
- Map of Furthest Airports from SDY
- List of Furthest Airports from SDY
- Map of Nearest Airports to AIA
- List of Nearest Airports to AIA
- Map of Furthest Airports from AIA
- List of Furthest Airports from AIA
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Alliance Municipal Airport (AIA), Alliance, Nebraska, United States would travel a Great Circle distance of 396 miles (or 638 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 Sidney-Richland Municipal Airport and Alliance Municipal Airport, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
| IATA / ICAO Codes: | AIA / KAIA |
| Airport Names: |
|
| Location: | Alliance, Nebraska, United States |
| GPS Coordinates: | 42°3'11"N by 102°48'14"W |
| Area Served: | Alliance, Nebraska |
| Operator/Owner: | City of Alliance |
| Airport Type: | Public |
| Elevation: | 3931 feet (1,198 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from AIA |
| More Information: | AIA Maps & Info |
Facts about Sidney-Richland Municipal Airport (SDY):
- Sidney-Richland Municipal Airport (SDY) has 2 runways.
- Sidney-Richland Municipal Airport is a public use airport located one nautical mile west of the central business district of Sidney, a city in Richland County, Montana, United States.
- Sidney-Richland Municipal Airport covers an area of 335 acres at an elevation of 1,985 feet above mean sea level.
- 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.
Facts about Alliance Municipal Airport (AIA):
- The furthest airport from Alliance Municipal Airport (AIA) is Sir Gaëtan Duval Airport (RRG), which is located 10,697 miles (17,215 kilometers) away in Rodrigues Island, Mauritius.
- Alliance Municipal Airport is in Box Butte County, Nebraska, three miles southeast of the city of Alliance, which owns it.Great Lakes Airlines scheduled passenger flights are subsidized by the Essential Air Service program.
- During construction over 5,000 workers came from all over the country, causing a housing shortage.
- Alliance AAF was divided into air operations, quartermaster, troop cantonment, and gunnery ranges.
- In addition to being known as "Alliance Municipal Airport", another name for AIA is "(former Alliance Army Airfield)".
- Alliance Municipal Airport (AIA) has 3 runways.
- Alliance Municipal Airport was built during World War II by the United States Army Air Forces It was one of eleven USAAF training airfields in Nebraska during World War II.
- The closest airport to Alliance Municipal Airport (AIA) is Western Nebraska Regional Airport (BFF), which is located 43 miles (68 kilometers) WSW of AIA.
- Today many World War II-era buildings remain in use.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 42.52 miles (68.43 km) WSW | Western Nebraska Regional Airport (BFF) | Scottsbluff, Nebraska, United States | |
| 2 | 56.18 miles (90.41 km) NNW | Chadron Municipal Airport (CDR) | Chadron, Nebraska, United States | |
| 3 | 66.55 miles (107.10 km) S | Sidney Municipal Airport (SNY) | Sidney, Nebraska, United States | |
| 4 | 68.60 miles (110.40 km) NNE | Pine Ridge Airport (XPR) | Pine Ridge, South Dakota, United States | |
| 5 | 69.20 miles (111.37 km) W | Torrington Municipal Airport (TOR) | Torrington, Wyoming, United States | |
| 6 | 120.81 miles (194.42 km) WSW | Cheyenne Regional Airport (CYS) | Cheyenne, Wyoming, United States | |
| 7 | 124.12 miles (199.75 km) WSW | Francis E. Warren Air Force Base (FEW) | Cheyenne, Wyoming, United States | |
| 8 | 126.92 miles (204.25 km) ESE | North Platte Regional Airport (LBF) | North Platte, Nebraska, United States | |
| 9 | 127.65 miles (205.43 km) ENE | Miller Field (VTN) | Valentine, Nebraska, United States | |
| 10 | 131.55 miles (211.71 km) S | Colorado Plains Regional Airport (AKO) | Akron, Colorado, United States | |
| 11 | 138.22 miles (222.45 km) N | Rapid City Regional Airport (RAP) | Rapid City, South Dakota, United States | |
| 12 | 141.35 miles (227.48 km) WNW | Converse County Airport (DGW) | Douglas, Wyoming, United States | |
| 13 | 145.26 miles (233.77 km) N | Ellsworth Air Force Base (RCA) | Rapid City, South Dakota, United States | |
| 14 | 146.60 miles (235.93 km) SW | Greeley-Weld County Airport (GXY) | Greeley, Colorado, United States | |
| 15 | 148.12 miles (238.38 km) ENE | Ainsworth Regional Airport (ANW) | Ainsworth, Nebraska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,696.91 miles (17,214.97 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,559.59 miles (16,993.98 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,527.35 miles (16,942.09 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,506.71 miles (16,908.88 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,353.37 miles (16,662.10 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,316.77 miles (16,603.18 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 10,293.82 miles (16,566.25 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 8 | 10,273.71 miles (16,533.90 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 9 | 10,269.88 miles (16,527.73 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 10 | 10,233.46 miles (16,469.11 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 11 | 10,231.84 miles (16,466.50 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 12 | 10,230.37 miles (16,464.14 km) ESE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 13 | 10,217.47 miles (16,443.39 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 14 | 10,208.33 miles (16,428.68 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 15 | 10,207.77 miles (16,427.77 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |