Nonstop flight route between Coltishall, United Kingdom and St. Mary's, Alaska, United States:
Departure Airport:
(52°43'41"N by 1°21'42"E)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from CLF to KSM:
4,461.48 miles (7,180.03 km)
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- About this route
- CLF Airport Information
- KSM Airport Information
- Facts about CLF
- Facts about KSM
- Map of Nearest Airports to CLF
- List of Nearest Airports to CLF
- Map of Furthest Airports from CLF
- List of Furthest Airports from CLF
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
About this route:
A direct, nonstop flight between Coltishall (IATA off-point) (CLF), Coltishall, United Kingdom and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 4,461 miles (or 7,180 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 Coltishall (IATA off-point) and St. Mary's 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 Coltishall (IATA off-point) and St. Mary's Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | CLF / |
| Airport Name: | Coltishall (IATA off-point) |
| Location: | Coltishall, United Kingdom |
| GPS Coordinates: | 52°43'41"N by 1°21'42"E |
| Elevation: | 0 feet (0 meters) |
| View all routes: | Routes from CLF |
| More Information: | CLF Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | KSM / PASM |
| Airport Name: | St. Mary's Airport |
| Location: | St. Mary's, Alaska, United States |
| GPS Coordinates: | 62°3'38"N by 163°18'6"W |
| Operator/Owner: | Alaska DOT&PF |
| Airport Type: | Public |
| Elevation: | 312 feet (95 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from KSM |
| More Information: | KSM Maps & Info |
Facts about Coltishall (IATA off-point) (CLF):
- Because of Coltishall (IATA off-point)'s relatively low elevation of 0 feet, planes can take off or land at Coltishall (IATA off-point) 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.
- Horstead watermill on the Coltishall-Horstead river border was one of the most photographed mills in the county until it burned down in 1963.
- The furthest airport from Coltishall (IATA off-point) (CLF) is Chatham Islands (CHT), which is located 11,813 miles (19,010 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Between 1779 and 1912, it was possible to navigate the River Bure all the way to Aylsham, but now the limit of navigation for powered craft is just south of Coltishall.
- The closest airport to Coltishall (IATA off-point) (CLF) is Norwich International Airport (NWI), which is located only 5 miles (8 kilometers) SW of CLF.
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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 closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 4.90 miles (7.89 km) SW | Norwich International Airport (NWI) | Norwich, England, United Kingdom |     |
| 2 | 34.42 miles (55.40 km) W | RAF Marham (KNF) | Marham, Norfolk, East Anglia, United Kingdom | |
| 3 | 36.36 miles (58.52 km) SW | RAF Honington USAAF Station 375 (BEQ) | Bury St. Edmunds, England, United Kingdom | |
| 4 | 40.39 miles (65.01 km) WSW | RAF Lakenheath (LKZ) | Lakenheath, England, United Kingdom | |
| 5 | 44.72 miles (71.97 km) SW | RAF Mildenhall (MHZ) | Mildenhall, Suffolk, England, United Kingdom | |
| 6 | 48.69 miles (78.36 km) S | Ipswich Airport (IPW) | Ipswich, England | |
| 7 | 61.66 miles (99.23 km) SW | Cambridge International Airport (CBG) | Cambridge, England, United Kingdom | |
| 8 | 63.40 miles (102.04 km) SW | MDPGA Wethersfield (WXF) | Braintree, England, United Kingdom | |
| 9 | 68.01 miles (109.46 km) SW | Duxford Aerodrome (QFO) | Duxford, England, United Kingdom | |
| 10 | 68.48 miles (110.20 km) WNW | RAF Coningsby (QCY) | Coningsby, England, United Kingdom | |
| 11 | 71.19 miles (114.57 km) WSW | RAF AlconburyUSAAF Station 102 (AYH) | Alconbury, England, United Kingdom | |
| 12 | 75.23 miles (121.07 km) SW | London Stansted Airport (STN) | Essex (near London), England, United Kingdom | |
| 13 | 81.90 miles (131.80 km) NW | RAF Binbrook (GSY) | Grimsby, England, United Kingdom | |
| 14 | 84.24 miles (135.57 km) W | RAF Cottesmore (OKH) | Oakham, England, United Kingdom | |
| 15 | 84.87 miles (136.58 km) SSW | London Southend Airport (SEN) | Southend, Essex (near London) United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,812.59 miles (19,010.47 km) S | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 2 | 11,750.15 miles (18,909.99 km) SE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 3 | 11,726.99 miles (18,872.72 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 4 | 11,723.22 miles (18,866.64 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,709.01 miles (18,843.77 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 6 | 11,693.88 miles (18,819.43 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 7 | 11,686.69 miles (18,807.85 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 8 | 11,686.56 miles (18,807.64 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 9 | 11,680.81 miles (18,798.39 km) SE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 10 | 11,657.15 miles (18,760.32 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,656.16 miles (18,758.73 km) SE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,639.99 miles (18,732.70 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 13 | 11,639.40 miles (18,731.75 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 14 | 11,632.38 miles (18,720.46 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,611.87 miles (18,687.45 km) SE | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.52 miles (20.15 km) W | Mountain Village Airport (MOU) | Mountain Village, Alaska, United States | |
| 2 | 15.71 miles (25.28 km) ESE | Pilot Station Airport (PQS) | Pilot Station, Alaska, United States | |
| 3 | 43.61 miles (70.18 km) ESE | Marshall Don Hunter Sr. Airport (MLL) | Marshall, Alaska, United States | |
| 4 | 58.95 miles (94.87 km) WNW | Sheldon Point Airport (SXP) | Sheldon Point, Alaska, United States | |
| 5 | 61.02 miles (98.20 km) NW | Alakanuk Airport (AUK) | Alakanuk, Alaska, United States | |
| 6 | 62.90 miles (101.24 km) NW | Emmonak Airport (EMK) | Emmonak, Alaska, United States | |
| 7 | 67.40 miles (108.48 km) N | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 8 | 67.43 miles (108.52 km) ESE | Russian Mission Airport (RSH) | Russian Mission, Alaska, United States | |
| 9 | 75.21 miles (121.04 km) W | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 10 | 83.21 miles (133.91 km) WSW | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 11 | 84.72 miles (136.35 km) SSE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 12 | 85.97 miles (138.35 km) SSE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 13 | 88.49 miles (142.42 km) W | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 14 | 89.19 miles (143.53 km) SSW | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 15 | 89.22 miles (143.59 km) SSE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,494.08 miles (16,888.54 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,482.44 miles (16,869.80 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,457.83 miles (16,830.21 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,416.76 miles (16,764.12 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,371.90 miles (16,691.92 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,261.64 miles (16,514.46 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,199.66 miles (16,414.71 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,195.75 miles (16,408.43 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,169.94 miles (16,366.89 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 10 | 10,169.94 miles (16,366.89 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 11 | 10,157.43 miles (16,346.75 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,151.99 miles (16,338.00 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,149.37 miles (16,333.79 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 14 | 10,143.31 miles (16,324.03 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 15 | 10,133.50 miles (16,308.25 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |