Nonstop flight route between Columbia, Missouri, United States and Thorne Bay, Alaska, United States:
Departure Airport:
(38°49'5"N by 92°13'10"W)
Arrival Airport:
(55°41'17"N by 132°32'12"W)
Distance from COU to KTB:
2,176.40 miles (3,502.57 km)
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- About this route
- COU Airport Information
- KTB Airport Information
- Facts about COU
- Facts about KTB
- Map of Nearest Airports to COU
- List of Nearest Airports to COU
- Map of Furthest Airports from COU
- List of Furthest Airports from COU
- Map of Nearest Airports to KTB
- List of Nearest Airports to KTB
- Map of Furthest Airports from KTB
- List of Furthest Airports from KTB
About this route:
A direct, nonstop flight between Columbia Regional Airport (COU), Columbia, Missouri, United States and Thorne Bay Seaplane Base (KTB), Thorne Bay, Alaska, United States would travel a Great Circle distance of 2,176 miles (or 3,503 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 Columbia Regional Airport and Thorne Bay Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | COU / KCOU |
| Airport Name: | Columbia Regional Airport |
| Location: | Columbia, Missouri, United States |
| GPS Coordinates: | 38°49'5"N by 92°13'10"W |
| Area Served: | Columbia, Missouri |
| Operator/Owner: | City of Columbia |
| Airport Type: | Public |
| Elevation: | 889 feet (271 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from COU |
| More Information: | COU Maps & Info |
Arrival 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 |
Facts about Columbia Regional Airport (COU):
- In August 2012, Frontier Airlines announced plans to have twice weekly flights from Columbia to Orlando.
- The closest airport to Columbia Regional Airport (COU) is Jefferson City Memorial Airport (JEF), which is located only 16 miles (26 kilometers) SSE of COU.
- Columbia Regional Airport (COU) has 2 runways.
- Because of Columbia Regional Airport's relatively low elevation of 889 feet, planes can take off or land at Columbia 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 furthest airport from Columbia Regional Airport (COU) is Margaret River Airport (MGV), which is located 10,886 miles (17,519 kilometers) away in Margaret River, Western Australia, Australia.
- The 2013 Federal sequester will result in the closure of the airport's contract control tower and will require pilots to rely on air traffic controllers from other area airports.
Facts about Thorne Bay Seaplane Base (KTB):
- 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.
- 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 is a state-owned public-use seaplane base serving Thorne Bay, a community in the Prince of Wales-Hyder Census Area of the U.S.
- Thorne Bay Seaplane Base (KTB) currently has only 1 runway.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 16.05 miles (25.83 km) SSE | Jefferson City Memorial Airport (JEF) | Jefferson City, Missouri, United States |     |
| 2 | 52.07 miles (83.80 km) W | Sedalia Regional Airport (DMO) | Sedalia, Missouri, United States | |
| 3 | 52.98 miles (85.27 km) SSW | Lee C. Fine Memorial Airport (AIZ) | Lake Ozark, Missouri, United States | |
| 4 | 53.57 miles (86.21 km) SSE | Rolla National Airport (VIH) | Rolla, Missouri, United States | |
| 5 | 56.19 miles (90.43 km) WNW | Marshall Memorial Municipal Airport (MHL) | Marshall, Missouri, United States | |
| 6 | 71.81 miles (115.57 km) W | Whiteman Air Force Base (SZL) | Knob Noster, Missouri, United States | |
| 7 | 74.49 miles (119.89 km) S | Waynesville-St. Robert Regional Airport (TBN) | Fort Leonard Wood, Missouri, United States | |
| 8 | 85.17 miles (137.07 km) E | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 9 | 89.80 miles (144.53 km) N | Kirksville Regional Airport (IRK) | Kirksville, Missouri, United States | |
| 10 | 95.05 miles (152.97 km) NE | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 11 | 100.21 miles (161.27 km) E | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 12 | 112.58 miles (181.19 km) E | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 13 | 113.99 miles (183.45 km) NW | Trenton Municipal Airport (TRX) | Trenton, Missouri, United States | |
| 14 | 117.06 miles (188.38 km) E | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 15 | 121.00 miles (194.73 km) NNE | Keokuk Municipal Airport (EOK) | Keokuk, Iowa, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,886.09 miles (17,519.42 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,864.03 miles (17,483.92 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,841.42 miles (17,447.53 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,838.13 miles (17,442.24 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,811.54 miles (17,399.45 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,795.94 miles (17,374.34 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,786.87 miles (17,359.73 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,784.83 miles (17,356.46 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,763.47 miles (17,322.08 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,751.22 miles (17,302.36 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,743.19 miles (17,289.45 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,733.23 miles (17,273.41 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,697.68 miles (17,216.20 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 14 | 10,697.12 miles (17,215.31 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 15 | 10,695.54 miles (17,212.76 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 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 | |