Nonstop flight route between Changhai, China and Port Alexander, Alaska, United States:
Departure Airport:
(39°15'59"N by 122°40'0"E)
Arrival Airport:
(56°14'48"N by 134°38'53"W)
Distance from CNI to PTD:
4,450.95 miles (7,163.09 km)
Share this route:
Jump to:
- About this route
- CNI Airport Information
- PTD Airport Information
- Facts about CNI
- Facts about PTD
- Map of Nearest Airports to CNI
- List of Nearest Airports to CNI
- Map of Furthest Airports from CNI
- List of Furthest Airports from CNI
- Map of Nearest Airports to PTD
- List of Nearest Airports to PTD
- Map of Furthest Airports from PTD
- List of Furthest Airports from PTD
About this route:
A direct, nonstop flight between Changhai Airport (CNI), Changhai, China and Port Alexander Seaplane Base (PTD), Port Alexander, Alaska, United States would travel a Great Circle distance of 4,451 miles (or 7,163 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 Changhai Airport and Port Alexander Seaplane Base, 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 Changhai Airport and Port Alexander Seaplane Base. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
| IATA / ICAO Codes: | PTD / PAAP |
| Airport Names: |
|
| Location: | Port Alexander, Alaska, United States |
| GPS Coordinates: | 56°14'48"N by 134°38'53"W |
| Area Served: | Port Alexander, Alaska |
| Operator/Owner: | Alaska DOT&PF - Southeast Region |
| Airport Type: | Public |
| Elevation: | 0 feet (0 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PTD |
| More Information: | PTD Maps & Info |
Facts about Changhai Airport (CNI):
- 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.
- 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 closest airport to Changhai Airport (CNI) is Dalian Zhoushuizi International Airport (DLC), which is located 64 miles (103 kilometers) WSW of CNI.
Facts about Port Alexander Seaplane Base (PTD):
- Port Alexander Seaplane Base is a state owned, public use seaplane base located in Port Alexander, a city at the southeastern corner of Baranof Island in the Petersburg Census Area of the U.S.
- The furthest airport from Port Alexander Seaplane Base (PTD) is Port Alfred Airport (AFD), which is located 10,640 miles (17,123 kilometers) away in Port Alfred, South Africa.
- Port Alexander Seaplane Base (PTD) currently has only 1 runway.
- Because of Port Alexander Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Port Alexander Seaplane Base 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 "Port Alexander Seaplane Base", another name for PTD is "AHP".
- The closest airport to Port Alexander Seaplane Base (PTD) is Point Baker Seaplane Base (KPB), which is located 40 miles (64 kilometers) E of PTD.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 39.98 miles (64.34 km) E | Point Baker Seaplane Base (KPB) | Point Baker, Alaska, United States | |
| 2 | 40.21 miles (64.71 km) E | Port Protection Seaplane Base (PPV) | Port Protection, Alaska, United States | |
| 3 | 55.24 miles (88.91 km) ESE | Tokeen Seaplane Base (TKI) | Tokeen, Alaska, United States | |
| 4 | 56.78 miles (91.38 km) NNE | Kake Airport (KAE) | Kake, Alaska, United States | |
| 5 | 59.38 miles (95.57 km) E | North Whale Seaplane Base (WWP) | North Whale Pass, Alaska, United States | |
| 6 | 61.29 miles (98.64 km) ESE | Naukati Bay Seaplane Base (WNC) | Tuxekan Island, Alaska, United States | |
| 7 | 61.58 miles (99.10 km) NNW | Sitka Rocky Gutierrez Airport (SIT) | Sitka, Alaska, United States | |
| 8 | 71.67 miles (115.35 km) ESE | Coffman Cove Seaplane Base (KCC) | Coffman Cove, Alaska, United States | |
| 9 | 75.33 miles (121.23 km) ENE | Petersburg James A. Johnson Airport (PSG) | Petersburg, Alaska, United States | |
| 10 | 76.38 miles (122.92 km) SE | Klawock Airport (KLW) | Klawock, Alaska, United States | |
| 11 | 78.74 miles (126.71 km) SE | Craig Seaplane Base (CGA) | Craig, Alaska, United States | |
| 12 | 85.40 miles (137.44 km) SE | Waterfall Seaplane Base (KWF) | Waterfall, Alaska, United States | |
| 13 | 86.86 miles (139.79 km) N | Angoon Seaplane Base (AGN) | Angoon, Alaska, United States | |
| 14 | 88.33 miles (142.16 km) N | Chatham Seaplane Base (CYM) | Chatham, Alaska, United States | |
| 15 | 88.72 miles (142.78 km) ENE | Wrangell Airport (WRG) | Wrangell, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,639.80 miles (17,123.05 km) SE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 2 | 10,636.65 miles (17,117.99 km) SE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 3 | 10,628.00 miles (17,104.07 km) SE | East London Airport (ELS) | East London, South Africa | |
| 4 | 10,554.56 miles (16,985.87 km) SE | George Airport (GRJ) | George, South Africa | |
| 5 | 10,550.30 miles (16,979.02 km) SSE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 6 | 10,537.99 miles (16,959.21 km) SSE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 7 | 10,469.73 miles (16,849.35 km) SSE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 8 | 10,459.21 miles (16,832.43 km) SSE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 9 | 10,444.62 miles (16,808.94 km) SE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 10 | 10,442.29 miles (16,805.19 km) SSE | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 11 | 10,427.82 miles (16,781.91 km) SSE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 12 | 10,427.52 miles (16,781.43 km) SSE | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 13 | 10,426.91 miles (16,780.44 km) SSE | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 14 | 10,410.61 miles (16,754.20 km) SSE | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |
| 15 | 10,407.54 miles (16,749.28 km) SSE | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |