Nonstop flight route between Thorne Bay, Alaska, United States and Kōchi, Japan:
Departure Airport:
(55°41'17"N by 132°32'12"W)
Arrival Airport:
(33°32'45"N by 133°40'9"E)
Distance from KTB to KCZ:
4,479.09 miles (7,208.38 km)
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Jump to:
- About this route
- KTB Airport Information
- KCZ Airport Information
- Facts about KTB
- Facts about KCZ
- Map of Nearest Airports to KTB
- List of Nearest Airports to KTB
- Map of Furthest Airports from KTB
- List of Furthest Airports from KTB
- Map of Nearest Airports to KCZ
- List of Nearest Airports to KCZ
- Map of Furthest Airports from KCZ
- List of Furthest Airports from KCZ
About this route:
A direct, nonstop flight between Thorne Bay Seaplane Base (KTB), Thorne Bay, Alaska, United States and Kōchi Airport (KCZ), Kōchi, Japan would travel a Great Circle distance of 4,479 miles (or 7,208 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 Thorne Bay Seaplane Base and Kōchi 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 Thorne Bay Seaplane Base and Kōchi Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | KTB / |
| Airport Name: | Thorne Bay Seaplane Base |
| Location: | Thorne Bay, Alaska, United States |
| GPS Coordinates: | 55°41'17"N by 132°32'12"W |
| Area Served: | Thorne Bay, Alaska |
| Operator/Owner: | State of Alaska DOT&PF - Southeast Region |
| Airport Type: | Public |
| Elevation: | 0 feet (0 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from KTB |
| More Information: | KTB Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | KCZ / RJOK |
| Airport Names: |
|
| Location: | Kōchi, Japan |
| GPS Coordinates: | 33°32'45"N by 133°40'9"E |
| Operator/Owner: | Government of Japan |
| Airport Type: | Public |
| Elevation: | 29 feet (9 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from KCZ |
| More Information: | KCZ Maps & Info |
Facts about Thorne Bay Seaplane Base (KTB):
- The closest airport to Thorne Bay Seaplane Base (KTB) is Hollis Clark Bay Seaplane Base (HYL), which is located only 14 miles (23 kilometers) SSW of KTB.
- Thorne Bay Seaplane Base (KTB) currently has only 1 runway.
- Because of Thorne Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Thorne Bay 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.
- The furthest airport from Thorne Bay Seaplane Base (KTB) is Port Alfred Airport (AFD), which is located 10,618 miles (17,088 kilometers) away in Port Alfred, South Africa.
Facts about Kōchi Airport (KCZ):
- The 120 ha airport has a single runway handling small to medium size aircraft.
- The furthest airport from Kōchi Airport (KCZ) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Kōchi Airport (meaning Kōchi Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,083 miles (19,446 kilometers) away in Rio Grande, Brazil.
- Kōchi Airport (KCZ) currently has only 1 runway.
- The closest airport to Kōchi Airport (KCZ) is Takamatsu Airport (TAK), which is located 50 miles (81 kilometers) NNE of KCZ.
- In addition to being known as "Kōchi Airport", another name for KCZ is "高知空港".
- Because of Kōchi Airport's relatively low elevation of 29 feet, planes can take off or land at Kōchi 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 | 14.06 miles (22.63 km) SSW | Hollis Clark Bay Seaplane Base (HYL) | Hollis, Alaska, United States |     |
| 2 | 22.34 miles (35.96 km) WSW | Klawock Airport (KLW) | Klawock, Alaska, United States | |
| 3 | 25.34 miles (40.79 km) NNW | Coffman Cove Seaplane Base (KCC) | Coffman Cove, Alaska, United States | |
| 4 | 27.90 miles (44.90 km) WSW | Craig Seaplane Base (CGA) | Craig, Alaska, United States | |
| 5 | 29.09 miles (46.82 km) WNW | Naukati Bay Seaplane Base (WNC) | Tuxekan Island, Alaska, United States | |
| 6 | 35.17 miles (56.60 km) WNW | Tokeen Seaplane Base (TKI) | Tokeen, Alaska, United States | |
| 7 | 35.19 miles (56.63 km) SSW | Hydaburg Seaplane Base (HYG) | Hydaburg, Alaska, United States | |
| 8 | 37.27 miles (59.99 km) NW | North Whale Seaplane Base (WWP) | North Whale Pass, Alaska, United States | |
| 9 | 38.70 miles (62.28 km) SW | Waterfall Seaplane Base (KWF) | Waterfall, Alaska, United States | |
| 10 | 39.68 miles (63.87 km) SE | Ketchikan International Airport (KTN) | Ketchikan, Alaska, United States | |
| 11 | 41.60 miles (66.95 km) SE | Ketchikan Harbor Seaplane Base (WFB) | Ketchikan, Alaska, United States | |
| 12 | 53.80 miles (86.58 km) SE | Metlakatla Seaplane Base (MTM) | Metlakatla, Annette Island, Alaska, United States | |
| 13 | 55.40 miles (89.16 km) N | Wrangell Airport (WRG) | Wrangell, Alaska, United States | |
| 14 | 58.51 miles (94.17 km) SE | Annette Island Airport (ANN) | Annette Island, Alaska, United States | |
| 15 | 60.66 miles (97.62 km) NW | Port Protection Seaplane Base (PPV) | Port Protection, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,618.12 miles (17,088.17 km) SE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 2 | 10,611.06 miles (17,076.80 km) SE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 3 | 10,609.57 miles (17,074.40 km) SE | East London Airport (ELS) | East London, South Africa | |
| 4 | 10,536.12 miles (16,956.21 km) SE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 5 | 10,529.16 miles (16,945.00 km) SSE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 6 | 10,521.15 miles (16,932.11 km) SE | George Airport (GRJ) | George, South Africa | |
| 7 | 10,464.33 miles (16,840.66 km) SSE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 8 | 10,451.86 miles (16,820.59 km) SSE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 9 | 10,430.04 miles (16,785.47 km) SE | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 10 | 10,425.95 miles (16,778.90 km) SSE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 11 | 10,414.65 miles (16,760.71 km) SE | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 12 | 10,413.17 miles (16,758.33 km) SE | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,403.14 miles (16,742.18 km) SE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 14 | 10,400.12 miles (16,737.33 km) SE | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |
| 15 | 10,391.75 miles (16,723.87 km) SE | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 50.25 miles (80.86 km) NNE | Takamatsu Airport (TAK) | Takamatsu, Kagawa, Japan | |
| 2 | 59.04 miles (95.01 km) WNW | Matsuyama Airport (MYJ) | Matsuyama, Ehime, Japan | |
| 3 | 75.02 miles (120.73 km) NW | Hiroshima Airport (HIJ) | Hiroshima, Honshū, Japan | |
| 4 | 84.33 miles (135.72 km) N | Okayama Airport (OKJ) | Okayama, Japan | |
| 5 | 97.87 miles (157.51 km) E | Nanki-Shirahama Airport (SHM) | Shirahama, Japan | |
| 6 | 108.56 miles (174.71 km) NE | Kansai International Airport (KIX) | Osaka, Japan | |
| 7 | 111.40 miles (179.29 km) W | Oita Airport (OIT) | Oita, Japan | |
| 8 | 116.40 miles (187.32 km) NE | Kobe Airport (UKB) | Kobe, Hyōgo Prefecture, Japan | |
| 9 | 132.50 miles (213.23 km) NE | Osaka International Airport (ITM) | Itami (near Osaka), Japan | |
| 10 | 132.50 miles (213.23 km) NE | Osaka International Airport (OSA) | Osaka, Japan | |
| 11 | 132.87 miles (213.83 km) NW | Iwami Airport (IWJ) | Masuda, Shimane, Japan, Japan | |
| 12 | 136.45 miles (219.60 km) NNW | Izumo Airport (IZO) | Izumo, Shimane, Japan | |
| 13 | 136.75 miles (220.08 km) N | Miho-Yonago Airport (YGJ) | Yonago, Tottori, Japan | |
| 14 | 139.90 miles (225.15 km) WNW | Yamaguchi Ube Airport (UBJ) | Ube, Yamaguchi Prefecture, Japan | |
| 15 | 157.79 miles (253.93 km) W | Kokura Airport (KKJ) | Kita Kyūshū, Kyūshū, Japan | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,083.37 miles (19,446.25 km) ESE | Rio Grande Regional Airport (RIG) | Rio Grande, Brazil | |
| 2 | 12,065.53 miles (19,417.53 km) ESE | Pelotas International Airport (PET) | Pelotas, Rio Grande do Sul, Brazil | |
| 3 | 12,061.28 miles (19,410.69 km) SE | Salgado Filho International Airport (POA) | Porto Alegre, Rio Grande do Sul, Brazil | |
| 4 | 12,056.86 miles (19,403.58 km) SSE | Diomício Freitas/Forquilhinha Airport (CCM) | Criciúma, Santa Catarina, Brazil | |
| 5 | 12,009.89 miles (19,328.00 km) SSE | Florianópolis-Hercílio Luz International Airport (FLN) | Florianópolis, Santa Catarina, Brazil | |
| 6 | 11,974.59 miles (19,271.18 km) SSE | Antônio Correia Pinto de Macedo Airport (LAJ) | Lages, Santa Catarina, Brazil | |
| 7 | 11,973.70 miles (19,269.76 km) E | Treinta y Tres Airport (TYT) | Treinta y Tres, Treinta y Tres, Uruguay | |
| 8 | 11,971.88 miles (19,266.82 km) E | Cerro Largo International Airport (MLZ) | Melo, Cerro Largo, Uruguay | |
| 9 | 11,959.65 miles (19,247.15 km) ESE | Comandante Gustavo Kraemer International Airport (BGX) | Bagé, Rio Grande do Sul, Brazil | |
| 10 | 11,955.78 miles (19,240.92 km) SSE | Navegantes Airport (NVT) | Navegantes, Santa Catarina, Brazil | |
| 11 | 11,940.59 miles (19,216.48 km) ESE | Cerro Largo International Airport (VCH) | Vichadero, Rivera, Uruguay | |
| 12 | 11,929.29 miles (19,198.28 km) ESE | Santa Maria Airport (RIA) | Santa Maria, Rio Grande do Sul, Brazil | |
| 13 | 11,928.08 miles (19,196.33 km) ESE | Capitán de Corbeta Carlos A. Curbelo International Airport (PDP) | Maldonado/Punta del Este, Maldonado, Uruguay | |
| 14 | 11,926.52 miles (19,193.82 km) SE | Lauro Kurtz Airport (PFB) | Passo Fundo, Rio Grande do Sul, Brazil | |
| 15 | 11,909.74 miles (19,166.82 km) SSE | Joinville-Lauro Carneiro de Loyola Airport (JOI) | Joinville, Santa Catarina, Brazil | |