Nonstop flight route between Marathon, Florida, United States and Portsmouth, Ohio, United States:
Departure Airport:
(24°43'33"N by 81°3'5"W)
Arrival Airport:
(38°50'26"N by 82°50'49"W)
Distance from MTH to PMH:
980.84 miles (1,578.50 km)
Share this route:
Jump to:
- About this route
- MTH Airport Information
- PMH Airport Information
- Facts about MTH
- Facts about PMH
- Map of Nearest Airports to MTH
- List of Nearest Airports to MTH
- Map of Furthest Airports from MTH
- List of Furthest Airports from MTH
- Map of Nearest Airports to PMH
- List of Nearest Airports to PMH
- Map of Furthest Airports from PMH
- List of Furthest Airports from PMH
About this route:
A direct, nonstop flight between Florida Keys Marathon Airport (MTH), Marathon, Florida, United States and Greater Portsmouth Regional Airport (PMH), Portsmouth, Ohio, United States would travel a Great Circle distance of 981 miles (or 1,579 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 Florida Keys Marathon Airport and Greater Portsmouth Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | MTH / KMTH |
| Airport Name: | Florida Keys Marathon Airport |
| Location: | Marathon, Florida, United States |
| GPS Coordinates: | 24°43'33"N by 81°3'5"W |
| Operator/Owner: | Monroe County |
| Airport Type: | Public |
| Elevation: | 7 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from MTH |
| More Information: | MTH Maps & Info |
Arrival 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 |
Facts about Florida Keys Marathon Airport (MTH):
- Because of Florida Keys Marathon Airport's relatively low elevation of 7 feet, planes can take off or land at Florida Keys Marathon 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 furthest airport from Florida Keys Marathon Airport (MTH) is Cocos (Keeling) Island Airport (CCK), which is located 11,560 miles (18,603 kilometers) away in Cocos Islands, Australia.
- The closest airport to Florida Keys Marathon Airport (MTH) is NAS Key West (NQX), which is located 41 miles (67 kilometers) WSW of MTH.
- On October 4, 2008, Continental Airlines announced it would begin commercial service to Marathon Airport via a Cape Air codeshare to Southwest Florida International Airport in Fort Myers, with TSA security clearance to occur once on the ground in Fort Myers, if connecting to another flight.
- Florida Keys Marathon Airport (MTH) currently has only 1 runway.
- Marathon Airport was served by American Eagle Airlines until 2000.
Facts about Greater Portsmouth Regional Airport (PMH):
- 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.
- The closest airport to Greater Portsmouth Regional Airport (PMH) is Lawrence County Airpark (HTW), which is located 35 miles (56 kilometers) SSE of 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.
- The airport was constructed in the 1957 to replace another airport located in West Portsmouth, Ohio which was situated near the Ohio River.
- Greater Portsmouth Regional Airport (PMH) currently has only 1 runway.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.36 miles (66.56 km) WSW | NAS Key West (NQX) | Boca Chica Key, Florida, United States |     |
| 2 | 45.99 miles (74.02 km) WSW | Key West International Airport (EYW) | Key West, Florida, United States | |
| 3 | 63.47 miles (102.14 km) NE | Ocean Reef Club Airport (OCA) | Key Largo, Florida, United States | |
| 4 | 67.22 miles (108.19 km) NE | Homestead Air Reserve Base (HST) | Homestead, Florida, United States | |
| 5 | 74.51 miles (119.91 km) NNE | Kendall-Tamiami Executive Airport (TMB) | Miami, Florida, United States | |
| 6 | 79.05 miles (127.22 km) N | Dade-Collier Training and Transition Airport (TNT) | Miami, Florida, United States | |
| 7 | 87.73 miles (141.19 km) NNE | Miami International Airport (MIA) | Miami, Florida, United States | |
| 8 | 91.20 miles (146.77 km) NE | Miami Seaplane Base (MPB) | Watson Island, Miami-Dade County, Florida, United States | |
| 9 | 94.84 miles (152.62 km) NNE | Opa-locka Executive Airport (OPF) | Miami, Florida, United States | |
| 10 | 95.86 miles (154.28 km) NNW | Marco Island Airport (MRK) | Marco Island, Florida, United States | |
| 11 | 101.59 miles (163.50 km) NNE | North Perry Airport (HWO) | Hollywood, Florida, United States | |
| 12 | 108.42 miles (174.48 km) NNW | Naples Municipal Airport (APF) | Naples, Florida, United States | |
| 13 | 108.62 miles (174.81 km) NNE | Fort Lauderdale–Hollywood International Airport (FLL) | Fort Lauderdale / Hollywood, Florida, United States | |
| 14 | 111.85 miles (180.00 km) S | Kawama Airport (VRO) | Varadero, Matanzas Province, Cuba | |
| 15 | 115.54 miles (185.94 km) NNE | Fort Lauderdale Executive Airport (FXE) | Fort Lauderdale, Florida, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,559.55 miles (18,603.24 km) S | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 2 | 11,520.04 miles (18,539.67 km) W | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 3 | 11,513.73 miles (18,529.50 km) W | Carnarvon Airport (CVQ) | Carnarvon, Western Australia, Australia | |
| 4 | 11,466.50 miles (18,453.50 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 5 | 11,462.60 miles (18,447.22 km) W | RAAF Learmonth (LEA) | Exmouth, Western Australia, Australia | |
| 6 | 11,425.68 miles (18,387.81 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 7 | 11,381.92 miles (18,317.38 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 8 | 11,378.58 miles (18,312.00 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 11,356.02 miles (18,275.70 km) W | Barrow Island Airport (BWB) | Barrow Island, Western Australia, Australia | |
| 10 | 11,355.74 miles (18,275.25 km) SSW | Christmas Island Airport (XCH) | Christmas Island, Australia | |
| 11 | 11,342.09 miles (18,253.27 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 12 | 11,311.49 miles (18,204.03 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 13 | 11,290.61 miles (18,170.43 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 14 | 11,289.97 miles (18,169.40 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 15 | 11,276.84 miles (18,148.28 km) SW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 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 | |