Nonstop flight route between Sidney, Montana, United States and Christiansted, Saint Croix, United States Virgin Islands:
Departure Airport:
(47°42'24"N by 104°11'32"W)
Arrival Airport:
(17°42'15"N by 64°48'6"W)
Distance from SDY to STX:
3,034.18 miles (4,883.03 km)
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Jump to:
- About this route
- SDY Airport Information
- STX Airport Information
- Facts about SDY
- Facts about STX
- 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 STX
- List of Nearest Airports to STX
- Map of Furthest Airports from STX
- List of Furthest Airports from STX
About this route:
A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Henry E. Rohlsen International Airport (STX), Christiansted, Saint Croix, United States Virgin Islands would travel a Great Circle distance of 3,034 miles (or 4,883 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 Sidney-Richland Municipal Airport and Henry E. Rohlsen International 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 Sidney-Richland Municipal Airport and Henry E. Rohlsen International Airport. You'll see that it will travel the same route of the red line on this map!
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: | STX / TISX |
| Airport Name: | Henry E. Rohlsen International Airport |
| Location: | Christiansted, Saint Croix, United States Virgin Islands |
| GPS Coordinates: | 17°42'15"N by 64°48'6"W |
| Area Served: | St. Croix, United States Virgin Islands |
| Operator/Owner: | United States Port Authority |
| Airport Type: | Public |
| Elevation: | 74 feet (23 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from STX |
| More Information: | STX Maps & Info |
Facts about Sidney-Richland Municipal Airport (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.
- 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.
- Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
Facts about Henry E. Rohlsen International Airport (STX):
- Henry E. Rohlsen International Airport (STX) currently has only 1 runway.
- During World War II, the United States Army Air Forces Sixth Air Force stationed the 12th Bombardment Squadron at the airport for antisubmarine patrols flying B-18 Bolo aircraft from November 8, 1941 to November 10, 1942.
- The furthest airport from Henry E. Rohlsen International Airport (STX) is Barrow Island Airport (BWB), which is nearly antipodal to Henry E. Rohlsen International Airport (meaning Henry E. Rohlsen International Airport is almost on the exact opposite side of the Earth from Barrow Island Airport), and is located 12,218 miles (19,663 kilometers) away in Barrow Island, Western Australia, Australia.
- Because of Henry E. Rohlsen International Airport's relatively low elevation of 74 feet, planes can take off or land at Henry E. Rohlsen International 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 Henry E. Rohlsen International Airport (STX) is Christiansted Harbor Seaplane Base (SSB), which is located only 7 miles (11 kilometers) ENE of STX.
| 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 | 7.02 miles (11.29 km) ENE | Christiansted Harbor Seaplane Base (SSB) | Christiansted, Saint Croix, U.S. Virgin Islands | |
| 2 | 44.76 miles (72.04 km) NNW | Charlotte Amalie Harbor Seaplane Base (SPB) | Charlotte Amalie, Saint Thomas, U.S. Virgin Islands | |
| 3 | 45.15 miles (72.67 km) NNW | Cyril E. King Airport (STT) | Charlotte Amalie, Saint Thomas, United States Virgin Islands | |
| 4 | 53.49 miles (86.09 km) NW | Benjamín Rivera Noriega Airport (CPX) | Isla de Culebra, Puerto Rico | |
| 5 | 53.95 miles (86.82 km) NNE | Terrance B. Lettsome International Airport (EIS) | Beef Island (near Tortola), British Virgin Islands | |
| 6 | 54.34 miles (87.46 km) WNW | Antonio Rivera Rodríguez Airport (VQS) | Vieques, Puerto Rico, United States | |
| 7 | 56.78 miles (91.38 km) NNE | Virgin Gorda Airport (VIJ) | Virgin Gorda, British Virgin Islands | |
| 8 | 70.25 miles (113.05 km) NW | Diego Jiménez Torres Airport (FAJ) | Fajardo, Puerto Rico, United States | |
| 9 | 72.20 miles (116.19 km) WNW | Humacao Airport (HUC) | Humacao, Puerto Rico, United States | |
| 10 | 93.77 miles (150.91 km) WNW | Luis Muñoz Marín International Airport (SJU) | San Juan, Puerto Rico | |
| 11 | 99.77 miles (160.57 km) WNW | Fernando Luis Ribas Dominicci Airport (SIG) | San Juan, Puerto Rico | |
| 12 | 104.17 miles (167.64 km) E | Juancho E. Yrausquin Airport (SAB) | Saba, Caribbean Netherlands | |
| 13 | 111.11 miles (178.81 km) WNW | Dorado Airport (DDP) | Dorado, Puerto Rico | |
| 14 | 113.68 miles (182.95 km) ENE | Princess Juliana International Airport (SXM) | Philipsburg, Sint Maarten, Kingdom of the Netherlands | |
| 15 | 117.72 miles (189.46 km) W | Mercedita Airport (PSE) | Ponce, Puerto Rico | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,217.95 miles (19,662.84 km) S | Barrow Island Airport (BWB) | Barrow Island, Western Australia, Australia | |
| 2 | 12,204.97 miles (19,641.94 km) SSW | Karratha Airport (KTA) | Karratha / Dampier, Western Australia, Australia | |
| 3 | 12,146.57 miles (19,547.96 km) SW | Port Hedland International Airport (PHE) | Port Hedland, Western Australia, Australia | |
| 4 | 12,115.53 miles (19,498.01 km) SSE | RAAF Learmonth (LEA) | Exmouth, Western Australia, Australia | |
| 5 | 12,108.83 miles (19,487.23 km) SSW | Coolawanyah Station Airport (COY) | Coolawanyah Station, Western Australia, Australia | |
| 6 | 12,081.05 miles (19,442.51 km) SSW | Solomon Airport (SLJ) | Karijini National Park, Western Australia, Australia | |
| 7 | 12,047.83 miles (19,389.06 km) SSW | Tom Price Airport (TPR) | Tom Price, Western Australia, Australia | |
| 8 | 12,024.67 miles (19,351.79 km) SSW | Paraburdoo Airport (PBO) | Paraburdoo, Western Australia, Australia | |
| 9 | 12,007.80 miles (19,324.64 km) SW | Barimunya Airport (BYP) | Barimunya, Western Australia, Australia | |
| 10 | 12,004.76 miles (19,319.75 km) SSW | Coondewanna Airport (CJF) | Coondewanna, Western Australia, Australia | |
| 11 | 11,974.15 miles (19,270.48 km) W | Broome International Airport (BME) | Broome, Western Australia, Australia | |
| 12 | 11,942.38 miles (19,219.35 km) SW | Newman Airport (ZNE) | Newman, Western Australia, Australia | |
| 13 | 11,931.35 miles (19,201.61 km) S | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 14 | 11,878.86 miles (19,117.12 km) W | Derby Airport (DRB) | Derby, Western Australia, Australia | |
| 15 | 11,861.54 miles (19,089.25 km) S | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |