Nonstop flight route between Portimão, Algarve, Portugal and Blountville, Tennessee (Tri-Cities area), United States:
Departure Airport:

Arrival Airport:

Distance from PRM to TRI:
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- About this route
- PRM Airport Information
- TRI Airport Information
- Facts about PRM
- Facts about TRI
- Map of Nearest Airports to PRM
- List of Nearest Airports to PRM
- Map of Furthest Airports from PRM
- List of Furthest Airports from PRM
- Map of Nearest Airports to TRI
- List of Nearest Airports to TRI
- Map of Furthest Airports from TRI
- List of Furthest Airports from TRI
About this route:
A direct, nonstop flight between Portimão Airport (PRM), Portimão, Algarve, Portugal and Tri-Cities Regional Airport (TRI), Blountville, Tennessee (Tri-Cities area), United States would travel a Great Circle distance of 3,972 miles (or 6,392 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 Portimão Airport and Tri-Cities Regional Airport, 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 Portimão Airport and Tri-Cities Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | PRM / LPPM |
Airport Names: |
|
Location: | Portimão, Algarve, Portugal |
GPS Coordinates: | 37°8'51"N by 8°34'46"W |
Area Served: | Portimão |
Airport Type: | Public |
Elevation: | 5 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from PRM |
More Information: | PRM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | TRI / KTRI |
Airport Names: |
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Location: | Blountville, Tennessee (Tri-Cities area), United States |
GPS Coordinates: | 36°28'31"N by 82°24'26"W |
Area Served: | Tri-Cities, Tennessee |
Operator/Owner: | Tri-Cities Airport Commission |
Airport Type: | Public |
Elevation: | 1519 feet (463 meters) |
# of Runways: | 2 |
View all routes: | Routes from TRI |
More Information: | TRI Maps & Info |
Facts about Portimão Airport (PRM):
- The closest airport to Portimão Airport (PRM) is Faro International Airport (FAO), which is located 35 miles (56 kilometers) ESE of PRM.
- The furthest airport from Portimão Airport (PRM) is Dargaville Aerodrome (DGR), which is nearly antipodal to Portimão Airport (meaning Portimão Airport is almost on the exact opposite side of the Earth from Dargaville Aerodrome), and is located 12,276 miles (19,756 kilometers) away in Dargaville, New Zealand.
- Portimão Airport (PRM) currently has only 1 runway.
- Because of Portimão Airport's relatively low elevation of 5 feet, planes can take off or land at Portimão 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.
- In addition to being known as "Portimão Airport", another name for PRM is "Aeródromo Municipal de Portimão".
Facts about Tri-Cities Regional Airport (TRI):
- Tri-Cities Regional Airport (TRI) has 2 runways.
- In the mid-1930s Johnson City’s airfield and Kingsport’s airstrip were deemed not practical for expansion.
- The closest airport to Tri-Cities Regional Airport (TRI) is Virginia Highlands Airport (VJI), which is located 25 miles (41 kilometers) NE of TRI.
- In addition to being known as "Tri-Cities Regional Airport", another name for TRI is "Tri-Cities Regional Airport, TN/VA".
- Tri-Cities Regional Airport covers 1,225 acres at an elevation of 1,519 feet above mean sea level.
- American Airlines pulled out in 1952.
- The furthest airport from Tri-Cities Regional Airport (TRI) is Margaret River Airport (MGV), which is located 11,434 miles (18,402 kilometers) away in Margaret River, Western Australia, Australia.