Nonstop flight route between Marathon, Florida, United States and Changhai, China:
Departure Airport:
(24°43'33"N by 81°3'5"W)
Arrival Airport:
(39°15'59"N by 122°40'0"E)
Distance from MTH to CNI:
7,757.61 miles (12,484.64 km)
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- About this route
- MTH Airport Information
- CNI Airport Information
- Facts about MTH
- Facts about CNI
- 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 CNI
- List of Nearest Airports to CNI
- Map of Furthest Airports from CNI
- List of Furthest Airports from CNI
About this route:
A direct, nonstop flight between Florida Keys Marathon Airport (MTH), Marathon, Florida, United States and Changhai Airport (CNI), Changhai, China would travel a Great Circle distance of 7,758 miles (or 12,485 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 Florida Keys Marathon Airport and Changhai 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 Florida Keys Marathon Airport and Changhai Airport. You'll see that it will travel the same route of the red line on this map!
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: | CNI / ZYCH |
| Airport Names: |
|
| Location: | Changhai, China |
| GPS Coordinates: | 39°15'59"N by 122°40'0"E |
| Airport Type: | Public |
| View all routes: | Routes from CNI |
| More Information: | CNI Maps & Info |
Facts about Florida Keys Marathon Airport (MTH):
- Marathon Airport was served by American Eagle Airlines until 2000.
- The Florida Keys Marathon Airport is a public airport located along the Overseas Highway in Marathon, in Monroe County, Florida, United States.
- 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.
- 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.
- 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.
- Florida Keys Marathon Airport (MTH) currently has only 1 runway.
Facts about Changhai Airport (CNI):
- In addition to being known as "Changhai Airport", other names for CNI include "长海大长山岛机场" and "Zhǎnghǎi Dàzhǎngshāndǎo Jīchǎng".
- The furthest airport from Changhai Airport (CNI) is Miramar Airport (MJR), which is nearly antipodal to Changhai Airport (meaning Changhai Airport is almost on the exact opposite side of the Earth from Miramar Airport), and is located 12,359 miles (19,890 kilometers) away in Miramar, Buenos Aires, Argentina.
- The closest airport to Changhai Airport (CNI) is Dalian Zhoushuizi International Airport (DLC), which is located 64 miles (103 kilometers) WSW of CNI.
| 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 | 63.97 miles (102.95 km) WSW | Dalian Zhoushuizi International Airport (DLC) | Dalian, Liaoning, China | |
| 2 | 127.41 miles (205.04 km) N | Anshan Teng'ao Airport (AOG) | Anshan, Liaoning, China | |
| 3 | 145.63 miles (234.37 km) S | Weihai Dashuibo Airport (WEH) | Weihai, Shandong, China | |
| 4 | 146.72 miles (236.12 km) SSW | Yantai Laishan International Airport (YNT) | Yantai, Shandong, China | |
| 5 | 152.49 miles (245.41 km) NNW | Jinzhou Xiaolingzi Airport (JNZ) | Jinzhou, Liaoning, China | |
| 6 | 160.71 miles (258.64 km) E | Pyongyang Sunan International Airport (FNJ) | Pyongyang, North Korea | |
| 7 | 163.60 miles (263.28 km) WNW | Qinhuangdao Shanhaiguan Airport (SHP) | Qinhuangdao, Hebei, China | |
| 8 | 169.53 miles (272.82 km) NNE | Shenyang Taoxian International Airport (SHE) | Shenyang, China | |
| 9 | 196.01 miles (315.45 km) NW | Chaoyang Airport (CHG) | Chaoyang, Liaoning, China | |
| 10 | 239.34 miles (385.18 km) ESE | Incheon International Airport (ICN) | Incheon (near Seoul), South Korea | |
| 11 | 242.16 miles (389.72 km) SSW | Qingdao Liuting International Airport (TAO) | Qingdao, Shandong, China | |
| 12 | 251.16 miles (404.21 km) W | Tangshan Sannühe Airport (TVS) | Tangshan, Hebei, China | |
| 13 | 252.49 miles (406.35 km) ESE | Gimpo International Airport (GMP) | Seoul, South Korea | |
| 14 | 252.49 miles (406.35 km) ESE | Gimpo International Airport (SEL) | Seoul, South Korea | |
| 15 | 260.48 miles (419.20 km) NE | Tonghua Sanyuanpu Airport (TNH) | Tonghua, Jilin, China | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,359.28 miles (19,890.28 km) SSE | Miramar Airport (MJR) | Miramar, Buenos Aires, Argentina | |
| 2 | 12,343.84 miles (19,865.44 km) S | Astor Piazzolla International Airport (MDQ) | Mar del Plata, Buenos Aires Province, Argentina | |
| 3 | 12,340.35 miles (19,859.82 km) ESE | Necochea Airport (NEC) | Necochea, Buenos Aires, Argentina | |
| 4 | 12,295.50 miles (19,787.64 km) S | Villa Gesell Airport (VLG) | Villa Gesell, Buenos Aires, Argentina | |
| 5 | 12,264.44 miles (19,737.66 km) ESE | Tres Arroyos Airport (OYO) | Tres Arroyos, Buenos Aires Province, Argentina | |
| 6 | 12,262.29 miles (19,734.19 km) SE | Tandil Airport (TDL) | Tandil, Argentina | |
| 7 | 12,209.76 miles (19,649.66 km) SE | Olavarría Airport (OVR) | Olavarría, Argentina | |
| 8 | 12,195.47 miles (19,626.65 km) SSE | Las Flores Airport (ELB) | El Banco, Colombia | |
| 9 | 12,174.45 miles (19,592.84 km) E | Comandante Espora Airport (BHI) | Bahía Blanca, Buenos Aires Province, Argentina | |
| 10 | 12,159.80 miles (19,569.24 km) ESE | Brigadier Hector Eduardo Ruiz Airport (CSZ) | Coronel Suárez, Buenos Aires, Argentina | |
| 11 | 12,138.49 miles (19,534.96 km) S | La Plata Airport (LPG) | La Plata, Buenos Aires, Argentina | |
| 12 | 12,122.66 miles (19,509.49 km) SSE | Ministro Pistarini International Airport (EZE) | Ezeiza (near Buenos Aires), Argentina | |
| 13 | 12,122.55 miles (19,509.30 km) SSW | Carrasco/General Cesáreo L. Berisso International Airport (MVD) | Montevideo, Montevideo, Uruguay | |
| 14 | 12,117.39 miles (19,501.01 km) ESE | Gobernador Edgardo Castello Airport (VDM) | Viedma, Argentina | |
| 15 | 12,107.98 miles (19,485.86 km) SSW | Capitán de Corbeta Carlos A. Curbelo International Airport (PDP) | Maldonado/Punta del Este, Maldonado, Uruguay | |