Nonstop flight route between Marshall, Texas, United States and Portimão, Algarve, Portugal:
Departure Airport:
(32°31'14"N by 94°18'28"W)
Arrival Airport:
(37°8'51"N by 8°34'46"W)
Distance from ASL to PRM:
4,697.92 miles (7,560.55 km)
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- About this route
- ASL Airport Information
- PRM Airport Information
- Facts about ASL
- Facts about PRM
- Map of Nearest Airports to ASL
- List of Nearest Airports to ASL
- Map of Furthest Airports from ASL
- List of Furthest Airports from ASL
- Map of Nearest Airports to PRM
- List of Nearest Airports to PRM
- Map of Furthest Airports from PRM
- List of Furthest Airports from PRM
About this route:
A direct, nonstop flight between Harrison County Airport (ASL), Marshall, Texas, United States and Portimão Airport (PRM), Portimão, Algarve, Portugal would travel a Great Circle distance of 4,698 miles (or 7,561 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 Harrison County Airport and Portimão 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 Harrison County Airport and Portimão Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ASL / KASL |
| Airport Name: | Harrison County Airport |
| Location: | Marshall, Texas, United States |
| GPS Coordinates: | 32°31'14"N by 94°18'28"W |
| Area Served: | Marshall, Texas |
| Operator/Owner: | Harrison County |
| Airport Type: | Public |
| Elevation: | 357 feet (109 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ASL |
| More Information: | ASL Maps & Info |
Arrival 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 |
Facts about Harrison County Airport (ASL):
- Harrison County Airport (ASL) has 2 runways.
- Because of Harrison County Airport's relatively low elevation of 357 feet, planes can take off or land at Harrison County 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.
- Harrison County Airport is a public airport three miles southeast of Marshall, Texas, in Harrison County, which owns it.
- Trans-Texas DC-3s stopped there until 1963.
- The closest airport to Harrison County Airport (ASL) is East Texas Regional Airport (GGG), which is located 25 miles (41 kilometers) WSW of ASL.
- The furthest airport from Harrison County Airport (ASL) is Cocos (Keeling) Island Airport (CCK), which is located 10,865 miles (17,485 kilometers) away in Cocos Islands, Australia.
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.
- In addition to being known as "Portimão Airport", another name for PRM is "Aeródromo Municipal de Portimão".
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 25.36 miles (40.81 km) WSW | East Texas Regional Airport (GGG) | Longview, Texas, United States |     |
| 2 | 28.57 miles (45.97 km) E | Shreveport Regional Airport (SHV) | Shreveport, Louisiana, United States | |
| 3 | 32.81 miles (52.81 km) E | Shreveport Downtown Airport (DTN) | Shreveport, Louisiana, United States | |
| 4 | 37.60 miles (60.52 km) E | Barksdale Air Force Base (BAD) | Bossier City, Louisiana, United States | |
| 5 | 64.88 miles (104.42 km) W | Tyler Pounds Regional Airport (TYR) | Tyler, Texas, United States | |
| 6 | 67.03 miles (107.87 km) NNE | Texarkana Regional Airport (TXK) | Texarkana, Arkansas, United States | |
| 7 | 69.66 miles (112.11 km) SW | Cherokee County Airport (JKV) | Jacksonville, Texas, United States | |
| 8 | 79.95 miles (128.67 km) NE | Magnolia Municipal Airport (AGO) | Magnolia, Arkansas, United States | |
| 9 | 88.11 miles (141.79 km) WNW | Sulphur Springs Municipal Airport (SLR) | Sulphur Springs, Texas, United States | |
| 10 | 92.61 miles (149.04 km) SSW | Angelina County Airport (LFK) | Lufkin, Texas, United States | |
| 11 | 99.32 miles (159.83 km) ENE | South Arkansas Regional Airport at Goodwin Field (ELD) | El Dorado, Arkansas, United States | |
| 12 | 100.18 miles (161.22 km) E | Ruston Regional Airport (RSN) | Ruston, Louisiana, United States | |
| 13 | 101.62 miles (163.53 km) NW | Cox FieldCox Army Airfield (PRX) | Paris, Texas, United States | |
| 14 | 108.85 miles (175.18 km) WNW | Majors Airport (GVT) | Greenville, Texas, United States | |
| 15 | 114.79 miles (184.73 km) W | Terrell Municipal Airport (TRL) | Terrell, Texas, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,864.61 miles (17,484.86 km) SSW | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 2 | 10,800.41 miles (17,381.53 km) ESE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 3 | 10,740.09 miles (17,284.45 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 4 | 10,721.37 miles (17,254.33 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 5 | 10,704.05 miles (17,226.45 km) W | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 6 | 10,703.29 miles (17,225.24 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 7 | 10,702.39 miles (17,223.79 km) W | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 8 | 10,699.54 miles (17,219.19 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 9 | 10,698.61 miles (17,217.70 km) W | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 10 | 10,698.32 miles (17,217.24 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 11 | 10,682.73 miles (17,192.14 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 12 | 10,679.59 miles (17,187.09 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 13 | 10,672.87 miles (17,176.27 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 14 | 10,666.89 miles (17,166.65 km) W | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 15 | 10,645.22 miles (17,131.78 km) W | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 35.07 miles (56.43 km) ESE | Faro International Airport (FAO) | Faro, Portugal | |
| 2 | 73.46 miles (118.22 km) NNE | Beja Airport (BYJ) | Beja, Portugal | |
| 3 | 116.38 miles (187.29 km) NNW | Lisbon Portela Airport (LIS) | Lisbon, Portugal | |
| 4 | 141.89 miles (228.35 km) E | Jerez Airport (XRY) | Jerez de la Frontera, Spain | |
| 5 | 148.55 miles (239.07 km) E | Seville Airport (SVQ) | Seville, Spain | |
| 6 | 153.87 miles (247.63 km) NE | Badajoz Airport (BJZ) | Badajoz, Spain | |
| 7 | 177.59 miles (285.80 km) ESE | Tangier Ibn Battouta Airport (TNG) | Tangier, Morocco | |
| 8 | 191.82 miles (308.70 km) ESE | Gibraltar International Airport (GIB) | Gibraltar | |
| 9 | 201.39 miles (324.11 km) ESE | Ceuta Heliport (JCU) | Ceuta, Spain | |
| 10 | 207.96 miles (334.68 km) N | Coimbra Airport (CBP) | Coimbra, Portugal | |
| 11 | 210.45 miles (338.68 km) ENE | Córdoba Airport (ODB) | Córdoba, Spain | |
| 12 | 210.70 miles (339.09 km) ESE | Sania Ramel Airport (SII) | Sidi Ifni, Morocco | |
| 13 | 210.70 miles (339.09 km) ESE | Sania Ramel Airport (TTU) | Tétouan, Morocco | |
| 14 | 223.39 miles (359.50 km) NNE | Covilhã Airport (COV) | Covilhã, Portugal | |
| 15 | 226.09 miles (363.85 km) SSE | Kenitra Air Base (NNA) | Kenitra, Morocco | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,276.14 miles (19,756.49 km) WSW | Dargaville Aerodrome (DGR) | Dargaville, New Zealand | |
| 2 | 12,259.49 miles (19,729.69 km) SW | Kaitaia Airport (KAT) | Kaitaia, New Zealand | |
| 3 | 12,259.28 miles (19,729.35 km) SW | Kaikohe Aerodrome (KKO) | Kaikohe, New Zealand | |
| 4 | 12,250.71 miles (19,715.56 km) W | Auckland Airport (AKL) | Mangere, New Zealand | |
| 5 | 12,247.45 miles (19,710.31 km) WSW | Whangarei Airport (WRE) | Whangarei, New Zealand | |
| 6 | 12,246.41 miles (19,708.63 km) SW | Kerikeri Airport (KKE) | Kerikeri, New Zealand | |
| 7 | 12,240.81 miles (19,699.63 km) W | Ardmore Airport (AMZ) | Ardmore, New Zealand | |
| 8 | 12,239.20 miles (19,697.04 km) SW | New Plymouth Airport (NPL) | New Plymouth, New Zealand | |
| 9 | 12,216.74 miles (19,660.88 km) WSW | Hamilton International Airport (HLZ) | Hamilton, New Zealand | |
| 10 | 12,209.80 miles (19,649.71 km) W | Coromandel Aerodrome (CMV) | Coromandel, New Zealand | |
| 11 | 12,209.43 miles (19,649.12 km) W | Thames Aerodrome (TMZ) | Thames, New Zealand | |
| 12 | 12,203.79 miles (19,640.04 km) WSW | Great Barrier Aerodrome (GBZ) | Great Barrier Island, New Zealand | |
| 13 | 12,196.40 miles (19,628.15 km) W | Matamata Airport (MTA) | Matamata, New Zealand | |
| 14 | 12,172.16 miles (19,589.14 km) W | Tauranga Airport (TRG) | Tauranga, New Zealand | |
| 15 | 12,166.84 miles (19,580.58 km) SSW | Takaka Aerodrome (KTF) | Takaka, New Zealand | |