Nonstop flight route between Roundup, Montana, United States and San Antonio, Texas, United States:
Departure Airport:
(46°28'30"N by 108°32'35"W)
Arrival Airport:
(29°23'3"N by 98°34'51"W)
Distance from RPX to SKF:
1,297.20 miles (2,087.63 km)
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- About this route
- RPX Airport Information
- SKF Airport Information
- Facts about RPX
- Facts about SKF
- 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 SKF
- List of Nearest Airports to SKF
- Map of Furthest Airports from SKF
- List of Furthest Airports from SKF
About this route:
A direct, nonstop flight between Roundup Airport (RPX), Roundup, Montana, United States and Lackland Air Force Base Joint Base San Antonio (SKF), San Antonio, Texas, United States would travel a Great Circle distance of 1,297 miles (or 2,088 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 Lackland Air Force Base Joint Base San Antonio, 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: | SKF / KSKF |
| Airport Name: | Lackland Air Force Base Joint Base San Antonio |
| Location: | San Antonio, Texas, United States |
| GPS Coordinates: | 29°23'3"N by 98°34'51"W |
| View all routes: | Routes from SKF |
| More Information: | SKF 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.
- 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.
- Roundup Airport (RPX) has 2 runways.
Facts about Lackland Air Force Base Joint Base San Antonio (SKF):
- The closest airport to Lackland Air Force Base Joint Base San Antonio (SKF) is Stinson Municipal Airport (SSF), which is located only 7 miles (12 kilometers) ESE of SKF.
- Lackland Air Force Base is home to the 37th Training Wing which operates a variety of training squadrons.
- Lackland, like many other Air Education and Training Command bases, trains enlisted airmen out of basic training in a specific specialty via various "tech schools." Lackland currently has six technical training squadrons on base training multiple airmen in various Air Force Specialty Codes.
- No other item in the 1960s compared to the incident that occurred at Lackland in February 1966 with the death of a basic trainee.
- In winter of 2009 it was decided to combine all the military bases in San Antonio into one large base named Joint Base San Antonio.
- The furthest airport from Lackland Air Force Base Joint Base San Antonio (SKF) is Sir Gaëtan Duval Airport (RRG), which is located 11,124 miles (17,902 kilometers) away in Rodrigues Island, Mauritius.
- In 1965 AN/FPS-20A was upgraded to an AN/FPS-91A radar, then in 1969 it was modified to an AN/FPS-66A.
| 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 | 7.38 miles (11.88 km) ESE | Stinson Municipal Airport (SSF) | San Antonio, Texas, United States | |
| 2 | 11.84 miles (19.05 km) NNE | San Antonio International Airport (SAT) | San Antonio, Texas, United States | |
| 3 | 20.77 miles (33.42 km) ENE | Randolph Air Force Base Joint Base San Antonio (RND) | Universal City, Texas, United States | |
| 4 | 35.95 miles (57.86 km) W | South Texas Regional Airport at Hondo (HDO) | Hondo, Texas, United States | |
| 5 | 50.92 miles (81.95 km) NW | Kerrville Municipal Airport (ERV) | Kerrville, Texas, United States | |
| 6 | 71.06 miles (114.35 km) W | Garner Field (UVA) | Uvalde, Texas, United States | |
| 7 | 74.78 miles (120.34 km) SSW | Cotulla–La Salle County Airport (COT) | Cotulla, Texas, United States | |
| 8 | 78.22 miles (125.89 km) NE | Austin–Bergstrom International Airport (AUS) | Austin, Texas, United States | |
| 9 | 92.40 miles (148.71 km) NE | Austin Executive Airport (EDC) | Austin, Texas, United States | |
| 10 | 106.86 miles (171.98 km) ESE | Victoria Regional Airport (VCT) | Victoria, Texas, United States | |
| 11 | 118.42 miles (190.58 km) SSE | Alice International Airport (ALI) | Alice, Texas, United States | |
| 12 | 124.66 miles (200.61 km) NNE | Killeen–Fort Hood Regional Airport (GRK) | Fort Hood / Killeen, Texas, United States | |
| 13 | 129.13 miles (207.82 km) NNE | Skylark Field (ILE) | Killeen, Texas, United States | |
| 14 | 129.14 miles (207.83 km) WSW | Piedras Negras International Airport (PDS) | Piedras Negras, Coahuila, Mexico | |
| 15 | 129.30 miles (208.10 km) SE | Aransas County Airport (RKP) | Rockport, Texas, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,124.10 miles (17,902.46 km) ESE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,890.45 miles (17,526.43 km) SW | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 3 | 10,829.89 miles (17,428.98 km) ESE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 4 | 10,725.45 miles (17,260.90 km) ESE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 5 | 10,718.29 miles (17,249.38 km) ESE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,459.94 miles (16,833.59 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 7 | 10,446.47 miles (16,811.93 km) W | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 8 | 10,440.24 miles (16,801.89 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 9 | 10,435.70 miles (16,794.59 km) W | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 10 | 10,433.37 miles (16,790.84 km) W | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,427.36 miles (16,781.16 km) W | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 12 | 10,422.83 miles (16,773.87 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 13 | 10,409.84 miles (16,752.97 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 14 | 10,406.44 miles (16,747.50 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 15 | 10,396.92 miles (16,732.17 km) SW | Christmas Island Airport (XCH) | Christmas Island, Australia | |