Nonstop flight route between Tacoma, Washington, United States and Watson Island, Miami-Dade County, Florida, United States:
Departure Airport:
Arrival Airport:
Distance from GRF to MPB:
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- About this route
- GRF Airport Information
- MPB Airport Information
- Facts about GRF
- Facts about MPB
- Map of Nearest Airports to GRF
- List of Nearest Airports to GRF
- Map of Furthest Airports from GRF
- List of Furthest Airports from GRF
- Map of Nearest Airports to MPB
- List of Nearest Airports to MPB
- Map of Furthest Airports from MPB
- List of Furthest Airports from MPB
About this route:
A direct, nonstop flight between Gray Army Airfield (GRF), Tacoma, Washington, United States and Miami Seaplane Base (MPB), Watson Island, Miami-Dade County, Florida, United States would travel a Great Circle distance of 2,732 miles (or 4,396 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 Gray Army Airfield and Miami Seaplane Base, 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 Gray Army Airfield and Miami Seaplane Base. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | GRF / KGRF |
| Airport Names: |
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| Location: | Tacoma, Washington, United States |
| GPS Coordinates: | 47°4'45"N by 122°34'50"W |
| Operator/Owner: | U.S. Army ATCA-ASO |
| Airport Type: | Military |
| Elevation: | 300 feet (91 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GRF |
| More Information: | GRF Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | MPB / |
| Airport Names: |
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| Location: | Watson Island, Miami-Dade County, Florida, United States |
| GPS Coordinates: | 25°46'41"N by 80°10'13"W |
| Area Served: | Miami, Florida |
| Operator/Owner: | City of Miami Property Mgmt Section |
| Airport Type: | Public use |
| Elevation: | 0 feet (0 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from MPB |
| More Information: | MPB Maps & Info |
Facts about Gray Army Airfield (GRF):
- Because of Gray Army Airfield's relatively low elevation of 300 feet, planes can take off or land at Gray Army Airfield 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.
- During the Vietnam War, GAAF not only trained helicopter units, but fixed-wing aircraft units as well.
- Used to support Fort Lewis, Army helicopters assisted with medical evacuations at Mount Rainier National Park on numerous occasions in the 1970s.
- World War II cantonment construction involved the demolition of some of the pre-1941 buildings.
- Since 2005 the field has been experiencing another major expansion.
- The furthest airport from Gray Army Airfield (GRF) is Tôlanaro Airport (FTU), which is located 10,809 miles (17,395 kilometers) away in Tôlanaro, Madagascar.
- Gray Army Airfield (GRF) currently has only 1 runway.
- In addition to being known as "Gray Army Airfield", another name for GRF is "(Joint Base Lewis-McChord)".
- The 1938 construction included two paved runways, a boiler plant, headquarters building, metal balloon hangar, six-plane hangar, corrugated-iron hangar, storehouse, flight-surgeon office, and film-storage building.
- The closest airport to Gray Army Airfield (GRF) is McChord Field/McChord AFB (TCM), which is located only 6 miles (10 kilometers) NE of GRF.
Facts about Miami Seaplane Base (MPB):
- Because of Miami Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Miami Seaplane Base 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.
- Miami Seaplane Base (MPB) currently has only 1 runway.
- The closest airport to Miami Seaplane Base (MPB) is Miami International Airport (MIA), which is located only 8 miles (12 kilometers) W of MPB.
- The furthest airport from Miami Seaplane Base (MPB) is Shark Bay Airport (MJK), which is located 11,582 miles (18,640 kilometers) away in Monkey Mia, Western Australia, Australia.
- In addition to being known as "Miami Seaplane Base", another name for MPB is "X44".
