Nonstop flight route between between Baltimore, Maryland and Washington, D.C., United States and Roundup, Montana, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from BWI to RPX:
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- About this route
- BWI Airport Information
- RPX Airport Information
- Facts about BWI
- Facts about RPX
- Map of Nearest Airports to BWI
- List of Nearest Airports to BWI
- Map of Furthest Airports from BWI
- List of Furthest Airports from BWI
- 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 Baltimore/Washington International Thurgood Marshall Airport (BWI), between Baltimore, Maryland and Washington, D.C., United States and Roundup Airport (RPX), Roundup, Montana, United States would travel a Great Circle distance of 1,679 miles (or 2,702 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 Baltimore/Washington International Thurgood Marshall 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: | BWI / KBWI | 
| Airport Name: | Baltimore/Washington International Thurgood Marshall Airport | 
| Location: | between Baltimore, Maryland and Washington, D.C., United States | 
| GPS Coordinates: | 39°10'31"N by 76°40'5"W | 
| Area Served: | Baltimore–Washington Metropolitan Area | 
| Operator/Owner: | Maryland Aviation Administration | 
| Airport Type: | Public | 
| Elevation: | 146 feet (45 meters) | 
| # of Runways: | 4 | 
| View all routes: | Routes from BWI | 
| More Information: | BWI 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 Baltimore/Washington International Thurgood Marshall Airport (BWI):
- On July 12, 2013, BWI Airport and the Maryland Aviation Administration launched a 3-year $125 million construction project.
- Baltimore/Washington International Thurgood Marshall Airport (BWI) has 4 runways.
- Because of Baltimore/Washington International Thurgood Marshall Airport's relatively low elevation of 146 feet, planes can take off or land at Baltimore/Washington International Thurgood Marshall 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.
- Baltimore/Washington International Thurgood Marshall Airport handled 22,391,785 passengers last year.
- To accommodate Southwest's extensive presence at the airport, in 2005 Concourses A and B were expanded, renovated, and integrated with one another to house all of that airline's operations there.
- Planning for a new airport on 3,200 acres to serve the Baltimore/Washington area began just after the end of World War II.
- The closest airport to Baltimore/Washington International Thurgood Marshall Airport (BWI) is Tipton Airport (FME), which is located only 8 miles (13 kilometers) SW of BWI.
- Baltimore/Washington International Thurgood Marshall Airport has five concourses, though Concourses A and B were essentially merged into a single concourse in the renovations completed in 2005.
- The furthest airport from Baltimore/Washington International Thurgood Marshall Airport (BWI) is Margaret River Airport (MGV), which is located 11,691 miles (18,814 kilometers) away in Margaret River, Western Australia, Australia.
Facts about Roundup Airport (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.
- The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.




