Nonstop flight route between Guernsey, Channel Islands, United Kingdom and St. Mary's, Alaska, United States:
Departure Airport:
(49°26'4"N by 2°36'6"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from GCI to KSM:
4,660.07 miles (7,499.64 km)
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- About this route
- GCI Airport Information
- KSM Airport Information
- Facts about GCI
- Facts about KSM
- Map of Nearest Airports to GCI
- List of Nearest Airports to GCI
- Map of Furthest Airports from GCI
- List of Furthest Airports from GCI
- 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 Guernsey Airport (GCI), Guernsey, Channel Islands, United Kingdom and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 4,660 miles (or 7,500 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 Guernsey Airport 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 Guernsey Airport 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: | GCI / EGJB |
| Airport Name: | Guernsey Airport |
| Location: | Guernsey, Channel Islands, United Kingdom |
| GPS Coordinates: | 49°26'4"N by 2°36'6"W |
| Area Served: | Guernsey |
| Operator/Owner: | States of Guernsey |
| Airport Type: | Public |
| Elevation: | 336 feet (102 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GCI |
| More Information: | GCI 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 Guernsey Airport (GCI):
- Guernsey Airport handled 886,396 passengers last year.
- The proposal is to add runway safety areas, RESAs, extend the take-off section by 120 m, and displace the landing section to the west, the first of a two phase runway extension.
- Because of Guernsey Airport's relatively low elevation of 336 feet, planes can take off or land at Guernsey 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.
- Guernsey Airport is the largest airport in the Bailiwick of Guernsey and is the only airport on the island of Guernsey.
- The closest airport to Guernsey Airport (GCI) is Jersey Airport (JER), which is located 24 miles (39 kilometers) SE of GCI.
- The furthest airport from Guernsey Airport (GCI) is Dunedin International Airport (DUD), which is nearly antipodal to Guernsey Airport (meaning Guernsey Airport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,024 miles (19,350 kilometers) away in Dunedin, Otago, New Zealand.
- On 7 December 1997 an F-27 operated by AirUK arriving from Southampton overshot the runway while landing in high cross winds.
- Guernsey Airport (GCI) currently has only 1 runway.
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.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 24.10 miles (38.78 km) SE | Jersey Airport (JER) | Jersey, Channel Islands, United Kingdom |     |
| 2 | 25.58 miles (41.17 km) NE | Alderney Airport (ACI) | Alderney, Channel Islands, United Kingdom | |
| 3 | 52.67 miles (84.77 km) ENE | Cherbourg - Maupertus Airport (CER) | Cherbourg, France | |
| 4 | 61.39 miles (98.80 km) SW | Lannion - Côte de Granit Airport (LAI) | Lannion, France | |
| 5 | 63.06 miles (101.48 km) S | Saint-Brieuc - Armor Airport (SBK) | Saint-Brieuc, France | |
| 6 | 63.12 miles (101.58 km) SSE | Dinard–Pleurtuit–Saint-Malo Airport (DNR) | Dinard, France | |
| 7 | 79.68 miles (128.23 km) SW | Morlaix - Ploujean Airport (MXN) | Morlaix, France | |
| 8 | 95.57 miles (153.81 km) NW | Plymouth City Airport (PLH) | Plymouth, United Kingdom | |
| 9 | 96.75 miles (155.70 km) NNW | Exeter International Airport (EXT) | Exeter, United Kingdom | |
| 10 | 98.61 miles (158.70 km) E | Caen la Mer Airport (CFR) | Caen, France | |
| 11 | 98.85 miles (159.09 km) NNE | Bournemouth Airport (BOH) | Bournemouth, England, United Kingdom | |
| 12 | 102.15 miles (164.40 km) SSE | Rennes–Saint-Jacques Airport (RNS) | Rennes, France | |
| 13 | 107.12 miles (172.39 km) SW | Brest Bretagne Airport (BES) | Brest, France | |
| 14 | 108.45 miles (174.54 km) NE | Bembridge Airport (BBP) | Bembridge, Isle of Wight, United Kingdom | |
| 15 | 118.31 miles (190.41 km) NNE | Southampton Airport (SOU) | Eastleigh (near Southampton), England, United Kingdom | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,023.73 miles (19,350.27 km) ESE | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 2 | 12,009.21 miles (19,326.90 km) SE | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 3 | 11,978.04 miles (19,276.75 km) SE | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 4 | 11,974.37 miles (19,270.83 km) ESE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 5 | 11,971.69 miles (19,266.52 km) SE | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 6 | 11,967.58 miles (19,259.90 km) ESE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 7 | 11,965.48 miles (19,256.52 km) SSE | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 8 | 11,961.42 miles (19,250.00 km) SE | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 9 | 11,951.29 miles (19,233.69 km) SW | Chatham Islands (CHT) | Waitangi, Chatham Islands, New Zealand | |
| 10 | 11,934.17 miles (19,206.14 km) SE | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 11 | 11,929.34 miles (19,198.36 km) ESE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 12 | 11,922.80 miles (19,187.84 km) SE | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 13 | 11,919.43 miles (19,182.42 km) SSE | Kaikoura Aerodrome (KBZ) | Kaikoura, New Zealand | |
| 14 | 11,915.54 miles (19,176.15 km) SE | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 15 | 11,895.42 miles (19,143.77 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 | |