Nonstop flight route between San Diego, California, United States and Roundup, Montana, United States:
Departure Airport:
(32°34'19"N by 116°58'49"W)
Arrival Airport:
(46°28'30"N by 108°32'35"W)
Distance from SDM to RPX:
1,059.12 miles (1,704.49 km)
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Jump to:
- About this route
- SDM Airport Information
- RPX Airport Information
- Facts about SDM
- Facts about RPX
- Map of Nearest Airports to SDM
- List of Nearest Airports to SDM
- Map of Furthest Airports from SDM
- List of Furthest Airports from SDM
- Map of Nearest Airports to RPX
- List of Nearest Airports to RPX
- Map of Furthest Airports from RPX
- List of Furthest Airports from RPX
About this route:
A direct, nonstop flight between Brown Field Municipal Airport (SDM), San Diego, California, United States and Roundup Airport (RPX), Roundup, Montana, United States would travel a Great Circle distance of 1,059 miles (or 1,704 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 Brown Field Municipal Airport and Roundup Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | SDM / KSDM |
| Airport Name: | Brown Field Municipal Airport |
| Location: | San Diego, California, United States |
| GPS Coordinates: | 32°34'19"N by 116°58'49"W |
| Area Served: | San Diego, California |
| Operator/Owner: | City of San Diego |
| Airport Type: | Public |
| Elevation: | 526 feet (160 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from SDM |
| More Information: | SDM Maps & Info |
Arrival 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 |
Facts about Brown Field Municipal Airport (SDM):
- In 1951 the Navy reopened Brown Field due to increased military activity from the Korean War.
- Brown Field is 1.5 miles north of the US/Mexico border in the Otay Mesa Community of the City of San Diego.
- A precision approach is not possible to either runway end due to rising terrain less than six miles east of the airport.
- Brown Field Municipal Airport (SDM) has 2 runways.
- The closest airport to Brown Field Municipal Airport (SDM) is Tijuana International Airport (TIJ), which is located only 2 miles (4 kilometers) SSE of SDM.
- Because of Brown Field Municipal Airport's relatively low elevation of 526 feet, planes can take off or land at Brown Field Municipal 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 furthest airport from Brown Field Municipal Airport (SDM) is Sir Gaëtan Duval Airport (RRG), which is located 11,551 miles (18,590 kilometers) away in Rodrigues Island, Mauritius.
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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 2.25 miles (3.62 km) SSE | Tijuana International Airport (TIJ) | Tijuana, Baja California, Mexico |     |
| 2 | 7.68 miles (12.35 km) W | Naval Outlying Landing Field Imperial Beach (NRS) | Imperial Beach, California, United States | |
| 3 | 16.24 miles (26.14 km) WNW | NAS North Island (NZY) | San Diego, California, United States | |
| 4 | 16.52 miles (26.58 km) NW | San Diego International Airport (SAN) | San Diego, California, United States | |
| 5 | 17.55 miles (28.24 km) N | Gillespie Field (SEE) | San Diego / El Cajon, California, United States | |
| 6 | 19.21 miles (30.91 km) NNW | Montgomery Field (MYF) | San Diego, California, United States | |
| 7 | 22.47 miles (36.17 km) NNW | MCAS Miramar, (NKX) | San Diego, California, United States | |
| 8 | 42.18 miles (67.88 km) NNW | McClellan–Palomar Airport (CLD) | Carlsbad, California, United States | |
| 9 | 49.55 miles (79.74 km) NNW | Bob Maxwell Field (Oceanside Municipal Airport) (OCN) | Oceanside, California, United States | |
| 10 | 58.05 miles (93.42 km) SSE | Ensenada Airport (ESE) | Ensenada, Baja California, Mexico | |
| 11 | 60.93 miles (98.06 km) NE | Borrego Valley Airport (BXS) | Borrego Springs, California, United States | |
| 12 | 75.43 miles (121.40 km) NE | Salton Sea Airport (SAS) | Salton City, California, United States | |
| 13 | 78.13 miles (125.74 km) ENE | Naval Air Facility El Centro (NJK) | El Centro, California, United States | |
| 14 | 80.30 miles (129.23 km) N | Hemet-Ryan AirportRyan Field (HMT) | Hemet, California, United States | |
| 15 | 83.48 miles (134.35 km) ENE | Imperial County Airport (IPL) | Imperial, California, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,551.14 miles (18,589.71 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 11,535.69 miles (18,564.85 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 11,530.31 miles (18,556.19 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 11,507.00 miles (18,518.67 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 11,335.51 miles (18,242.70 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 11,241.88 miles (18,092.00 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 11,204.11 miles (18,031.23 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 8 | 11,194.32 miles (18,015.46 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 11,127.00 miles (17,907.12 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 11,087.06 miles (17,842.84 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 11 | 11,082.72 miles (17,835.87 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 12 | 11,054.76 miles (17,790.86 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 13 | 11,029.27 miles (17,749.85 km) ESE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 14 | 11,027.42 miles (17,746.88 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 11,020.39 miles (17,735.56 km) ESE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 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 | |