Nonstop flight route between Roundup, Montana, United States and Fort Greely, Delta Junction, Alaska, United States:
Departure Airport:
(46°28'30"N by 108°32'35"W)
Arrival Airport:
(63°59'43"N by 145°43'11"W)
Distance from RPX to BIG:
1,854.66 miles (2,984.79 km)
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- About this route
- RPX Airport Information
- BIG Airport Information
- Facts about RPX
- Facts about BIG
- Map of Nearest Airports to RPX
- List of Nearest Airports to RPX
- Map of Furthest Airports from RPX
- List of Furthest Airports from RPX
- Map of Nearest Airports to BIG
- List of Nearest Airports to BIG
- Map of Furthest Airports from BIG
- List of Furthest Airports from BIG
About this route:
A direct, nonstop flight between Roundup Airport (RPX), Roundup, Montana, United States and Allen Army Airfield (BIG), Fort Greely, Delta Junction, Alaska, United States would travel a Great Circle distance of 1,855 miles (or 2,985 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 Roundup Airport and Allen Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | RPX / KRPX |
| Airport Name: | Roundup Airport |
| Location: | Roundup, Montana, United States |
| GPS Coordinates: | 46°28'30"N by 108°32'35"W |
| Area Served: | Roundup, Montana |
| Operator/Owner: | City of Roundup & Musselshell County |
| Airport Type: | Public |
| Elevation: | 3490 feet (1,064 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from RPX |
| More Information: | RPX Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | BIG / PABI |
| Airport Names: |
|
| Location: | Fort Greely, Delta Junction, Alaska, United States |
| GPS Coordinates: | 63°59'43"N by 145°43'11"W |
| Area Served: | Fort Greely, Alaska |
| Operator/Owner: | United States Army |
| Airport Type: | Public / Military |
| Elevation: | 1291 feet (393 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from BIG |
| More Information: | BIG Maps & Info |
Facts about Roundup Airport (RPX):
- The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.
- Roundup Airport (RPX) has 2 runways.
- The furthest airport from Roundup Airport (RPX) is Sir Gaëtan Duval Airport (RRG), which is located 10,535 miles (16,954 kilometers) away in Rodrigues Island, Mauritius.
Facts about Allen Army Airfield (BIG):
- In addition to being known as "Allen Army Airfield", another name for BIG is "(former Big Delta Army Airfield)".
- Allen Army Airfield (BIG) has 3 runways.
- Established in 1942 as Big Delta Army Airfield, it was named for river delta formed by the confluence of the Delta River and the Tanana River.
- The closest airport to Allen Army Airfield (BIG) is Delta Junction Airport (DJN), which is located only 4 miles (6 kilometers) N of BIG.
- The furthest airport from Allen Army Airfield (BIG) is Port Elizabeth International Airport (PLZ), which is located 10,331 miles (16,625 kilometers) away in Port Elizabeth, South Africa.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 46.10 miles (74.19 km) S | Billings Logan International Airport (BIL) | Billings, Montana, United States |     |
| 2 | 59.02 miles (94.99 km) NW | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 3 | 95.49 miles (153.67 km) NE | Jordan Airport (JDN) | Jordan, Montana, United States | |
| 4 | 105.84 miles (170.33 km) WSW | Mission Field (LVM) | Livingston, Montana, United States | |
| 5 | 126.53 miles (203.63 km) E | Miles City Airport (MLS) | Miles City, Montana, United States | |
| 6 | 133.88 miles (215.46 km) WSW | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 7 | 137.05 miles (220.56 km) S | Yellowstone Regional Airport (COD) | Cody, Wyoming, United States | |
| 8 | 139.98 miles (225.28 km) SSE | Sheridan County Airport (SHR) | Sheridan, Wyoming, United States | |
| 9 | 143.48 miles (230.90 km) WNW | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 10 | 150.20 miles (241.73 km) NE | Glasgow International Airport (GGW) | Glasgow, Montana, United States | |
| 11 | 150.36 miles (241.97 km) WNW | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 12 | 153.79 miles (247.50 km) NNW | Havre City-County Airport (HVR) | Havre, Montana, United States | |
| 13 | 163.70 miles (263.45 km) W | Helena Regional Airport (HLN) | Helena, Montana, United States | |
| 14 | 175.30 miles (282.12 km) SW | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 15 | 175.96 miles (283.18 km) S | Worland Municipal Airport (WRL) | Worland, Wyoming, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,534.71 miles (16,953.93 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,479.36 miles (16,864.85 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,476.57 miles (16,860.37 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 4 | 10,454.31 miles (16,824.54 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,433.23 miles (16,790.61 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,330.91 miles (16,625.95 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,261.65 miles (16,514.48 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,233.41 miles (16,469.03 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,132.24 miles (16,306.22 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 10 | 10,132.23 miles (16,306.21 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 11 | 10,116.24 miles (16,280.48 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,108.66 miles (16,268.28 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,089.56 miles (16,237.54 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,066.19 miles (16,199.92 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,059.04 miles (16,188.42 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 3.82 miles (6.15 km) N | Delta Junction Airport (DJN) | Delta Junction, Alaska, United States | |
| 2 | 31.13 miles (50.09 km) E | Healy River Airport (HKB) | Healy Lake, Alaska, United States | |
| 3 | 62.08 miles (99.91 km) NW | Eielson Air Force Base (EIL) | Fairbanks, Alaska, United States | |
| 4 | 81.12 miles (130.55 km) NW | Ladd Army Airfield (FBK) | Fairbanks / Fort Wainwright, Alaska, United States | |
| 5 | 84.69 miles (136.30 km) ESE | Tanacross Airport (TSG) | Tanacross, Alaska, United States | |
| 6 | 85.28 miles (137.25 km) NW | Fairbanks International Airport (FAI) | Fairbanks, Alaska, United States | |
| 7 | 96.11 miles (154.67 km) ESE | Tok Airport (TKJ) | Tok, Alaska, United States | |
| 8 | 98.78 miles (158.97 km) W | McKinley National Park Airport (MCL) | McKinley Park, Alaska, United States | |
| 9 | 107.57 miles (173.11 km) WNW | Nenana Municipal Airport (ENN) | Nenana, Alaska, United States | |
| 10 | 108.03 miles (173.86 km) NNE | Circle Hot Springs Airport (CHP) | Circle Hot Springs, Alaska, United States | |
| 11 | 112.52 miles (181.08 km) NNE | Central Airport (CEM) | Central, Alaska, United States | |
| 12 | 114.05 miles (183.55 km) WSW | Summit Airport (UMM) | Summit, Alaska, United States | |
| 13 | 114.09 miles (183.61 km) E | Chicken Airport (CKX) | Chicken, Alaska, United States | |
| 14 | 127.42 miles (205.07 km) S | Gulkana Airport (GKN) | Gulkana, Alaska, United States | |
| 15 | 134.36 miles (216.23 km) NW | Minto Al Wright Airport (MNT) | Minto, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,330.62 miles (16,625.48 km) SSE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 2 | 10,309.86 miles (16,592.07 km) SSE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 3 | 10,303.74 miles (16,582.22 km) SSE | George Airport (GRJ) | George, South Africa | |
| 4 | 10,279.77 miles (16,543.64 km) S | East London Airport (ELS) | East London, South Africa | |
| 5 | 10,257.51 miles (16,507.81 km) SSE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 6 | 10,181.65 miles (16,385.74 km) S | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,140.91 miles (16,320.17 km) S | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 8 | 10,067.52 miles (16,202.06 km) S | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 9 | 10,061.04 miles (16,191.64 km) S | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 10 | 10,057.41 miles (16,185.80 km) S | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 11 | 10,057.38 miles (16,185.74 km) S | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 12 | 10,056.80 miles (16,184.81 km) S | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 13 | 10,054.08 miles (16,180.43 km) S | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 14 | 10,032.50 miles (16,145.70 km) S | Moshoeshoe I International Airport (MSU) | Maseru, Lesotho | |
| 15 | 10,027.37 miles (16,137.45 km) S | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |