Nonstop flight route between Portsmouth, Ohio, United States and Unalakleet, Alaska, United States:
Departure Airport:
(38°50'26"N by 82°50'49"W)
Arrival Airport:
(63°53'17"N by 160°47'56"W)
Distance from PMH to UNK:
3,496.26 miles (5,626.67 km)
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Jump to:
- About this route
- PMH Airport Information
- UNK Airport Information
- Facts about PMH
- Facts about UNK
- Map of Nearest Airports to PMH
- List of Nearest Airports to PMH
- Map of Furthest Airports from PMH
- List of Furthest Airports from PMH
- Map of Nearest Airports to UNK
- List of Nearest Airports to UNK
- Map of Furthest Airports from UNK
- List of Furthest Airports from UNK
About this route:
A direct, nonstop flight between Greater Portsmouth Regional Airport (PMH), Portsmouth, Ohio, United States and Unalakleet Airport (UNK), Unalakleet, Alaska, United States would travel a Great Circle distance of 3,496 miles (or 5,627 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 Greater Portsmouth Regional Airport and Unalakleet 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 Greater Portsmouth Regional Airport and Unalakleet Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PMH / KPMH |
| Airport Name: | Greater Portsmouth Regional Airport |
| Location: | Portsmouth, Ohio, United States |
| GPS Coordinates: | 38°50'26"N by 82°50'49"W |
| Area Served: | Portsmouth, Ohio |
| Operator/Owner: | Scioto County Airport Authority |
| Airport Type: | Public |
| Elevation: | 663 feet (202 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PMH |
| More Information: | PMH Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | UNK / PAUN |
| Airport Name: | Unalakleet Airport |
| Location: | Unalakleet, Alaska, United States |
| GPS Coordinates: | 63°53'17"N by 160°47'56"W |
| Area Served: | Unalakleet, Alaska |
| Operator/Owner: | State of Alaska DOT&PF |
| Airport Type: | Public |
| Elevation: | 21 feet (6 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from UNK |
| More Information: | UNK Maps & Info |
Facts about Greater Portsmouth Regional Airport (PMH):
- The furthest airport from Greater Portsmouth Regional Airport (PMH) is Margaret River Airport (MGV), which is located 11,385 miles (18,322 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Greater Portsmouth Regional Airport's relatively low elevation of 663 feet, planes can take off or land at Greater Portsmouth Regional 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 closest airport to Greater Portsmouth Regional Airport (PMH) is Lawrence County Airpark (HTW), which is located 35 miles (56 kilometers) SSE of PMH.
- Greater Portsmouth Regional Airport (PMH) currently has only 1 runway.
- Greater Portsmouth Regional Airport is a public use airport located 10 nautical miles northeast of the central business district of Portsmouth, a city in Scioto County, Ohio, United States.
Facts about Unalakleet Airport (UNK):
- The closest airport to Unalakleet Airport (UNK) is Shaktoolik Airport (SKK), which is located 36 miles (58 kilometers) NNW of UNK.
- The furthest airport from Unalakleet Airport (UNK) is Cape Town International Airport (CPT), which is located 10,369 miles (16,688 kilometers) away in Cape Town, South Africa.
- Because of Unalakleet Airport's relatively low elevation of 21 feet, planes can take off or land at Unalakleet 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.
- Unalakleet Airport (UNK) has 2 runways.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 34.79 miles (55.99 km) SSE | Lawrence County Airpark (HTW) | Chesapeake, Ohio / Huntington, West Virginia, United States |     |
| 2 | 36.25 miles (58.33 km) SSE | Tri-State Airport (HTS) | Huntington, West Virginia, United States | |
| 3 | 41.94 miles (67.50 km) NE | Ohio University Airport Gordon K. Bush Airport (ATO) | Athens/Albany, Ohio, United States | |
| 4 | 64.90 miles (104.45 km) NW | Wilmington Air Park (ILN) | Wilmington, Ohio, United States | |
| 5 | 67.39 miles (108.45 km) N | Rickenbacker International Airport (LCK) | Columbus, Ohio, United States | |
| 6 | 74.94 miles (120.61 km) ESE | Yeager Airport (CRW) | Charleston, West Virginia, United States | |
| 7 | 80.01 miles (128.77 km) N | Port Columbus International Airport (CMH) | Columbus, Ohio, United States | |
| 8 | 83.15 miles (133.81 km) ENE | Mid-Ohio Valley Regional Airport (PKB) | Parkersburg, West Virginia, United States | |
| 9 | 86.34 miles (138.95 km) WNW | Cincinnati Municipal Airport (LUK) | Cincinnati, Ohio, United States | |
| 10 | 86.46 miles (139.15 km) N | Ohio State University Airport (OSU) | Columbus, Ohio, United States | |
| 11 | 87.10 miles (140.18 km) NW | Springfield–Beckley Municipal Airport (SGH) | Springfield, Ohio, United States | |
| 12 | 90.07 miles (144.96 km) NW | Dayton–Wright Brothers Airport (MGY) | Dayton, Ohio, United States | |
| 13 | 91.75 miles (147.65 km) NNE | Zanesville Municipal Airport (ZZV) | Zanesville, Ohio, United States | |
| 14 | 93.47 miles (150.42 km) NW | Wright-Patterson Air Force Base (FFO) | Dayton, Ohio, United States | |
| 15 | 95.72 miles (154.05 km) WNW | Middletown Regional Airport (MWO) | Middletown, Ohio, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,384.56 miles (18,321.63 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,361.95 miles (18,285.24 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,338.90 miles (18,248.15 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,338.49 miles (18,247.48 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,301.73 miles (18,188.33 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 11,287.40 miles (18,165.26 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 11,277.69 miles (18,149.64 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 11,266.80 miles (18,132.11 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 9 | 11,262.96 miles (18,125.94 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 10 | 11,243.76 miles (18,095.02 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 11 | 11,216.76 miles (18,051.58 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,187.46 miles (18,004.43 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 11,171.36 miles (17,978.51 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 11,164.59 miles (17,967.62 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,129.72 miles (17,911.50 km) SW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 35.73 miles (57.51 km) NNW | Shaktoolik Airport (SKK) | Shaktoolik, Alaska, United States | |
| 2 | 48.69 miles (78.35 km) SW | St. Michael Airport (SMK) | St. Michael, Alaska, United States | |
| 3 | 52.08 miles (83.82 km) WSW | Stebbins Airport (WBB) | Stebbins, Alaska, United States | |
| 4 | 66.87 miles (107.62 km) NW | Elim Airport (ELI) | Elim, Alaska, United States | |
| 5 | 68.84 miles (110.79 km) ENE | Kaltag Airport (KAL) | Kaltag, Alaska, United States | |
| 6 | 72.33 miles (116.40 km) SSE | Grayling Airport (KGX) | Grayling, Alaska, United States | |
| 7 | 73.39 miles (118.12 km) N | Koyuk Alfred Adams Airport (KKA) | Koyuk, Alaska, United States | |
| 8 | 80.60 miles (129.71 km) NW | Golovin Airport (GLV) | Golovin, Alaska, United States | |
| 9 | 87.85 miles (141.38 km) SSE | Anvik Airport (ANV) | Anvik, Alaska, United States | |
| 10 | 91.04 miles (146.51 km) SSE | Shageluk Airport (SHX) | Shageluk, Alaska, United States | |
| 11 | 91.32 miles (146.97 km) N | Haycock Airport (HAY) | Haycock, Alaska, United States | |
| 12 | 95.91 miles (154.35 km) NW | White Mountain Airport (WMO) | White Mountain, Alaska, United States | |
| 13 | 100.18 miles (161.22 km) NE | Nulato Airport (NUL) | Nulato, Alaska, United States | |
| 14 | 103.12 miles (165.95 km) SW | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 15 | 105.57 miles (169.90 km) N | Granite Mountain Air Station (GMT) | Granite Mountain, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,369.44 miles (16,687.96 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,367.72 miles (16,685.18 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,352.62 miles (16,660.88 km) S | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,315.27 miles (16,600.78 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,273.08 miles (16,532.88 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,164.61 miles (16,358.31 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,139.30 miles (16,317.59 km) ESE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |
| 8 | 10,103.51 miles (16,259.98 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,071.64 miles (16,208.69 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 10 | 10,055.18 miles (16,182.20 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 11 | 10,052.16 miles (16,177.35 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 12 | 10,051.35 miles (16,176.04 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 13 | 10,045.65 miles (16,166.86 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 14 | 10,045.65 miles (16,166.86 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 15 | 10,044.32 miles (16,164.73 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |