Nonstop flight route between Saga, Kyūshū, Japan and St. Mary's, Alaska, United States:
Departure Airport:
(33°8'58"N by 130°18'7"E)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from HSG to KSM:
3,468.19 miles (5,581.49 km)
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- About this route
- HSG Airport Information
- KSM Airport Information
- Facts about HSG
- Facts about KSM
- Map of Nearest Airports to HSG
- List of Nearest Airports to HSG
- Map of Furthest Airports from HSG
- List of Furthest Airports from HSG
- 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 Saga Airport (HSG), Saga, Kyūshū, Japan and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,468 miles (or 5,581 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 Saga 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 Saga 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: | HSG / RJFS |
| Airport Names: |
|
| Location: | Saga, Kyūshū, Japan |
| GPS Coordinates: | 33°8'58"N by 130°18'7"E |
| Area Served: | Fukuoka–Kitakyushu metropolitan area |
| Operator/Owner: | Saga Prefecture |
| Airport Type: | Public |
| Elevation: | 6 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from HSG |
| More Information: | HSG 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 Saga Airport (HSG):
- In addition to being known as "Saga Airport", other names for HSG include "佐賀空港" and "Saga-kūkō".
- Because of Saga Airport's relatively low elevation of 6 feet, planes can take off or land at Saga 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 Saga Airport (HSG) is Nagasaki Airport (NGS), which is located 28 miles (45 kilometers) SW of HSG.
- Saga Airport is an airport in the Kawasoe area of Saga, Saga Prefecture, Japan.
- The furthest airport from Saga Airport (HSG) is Rio Grande Regional Airport (RIG), which is nearly antipodal to Saga Airport (meaning Saga Airport is almost on the exact opposite side of the Earth from Rio Grande Regional Airport), and is located 12,275 miles (19,755 kilometers) away in Rio Grande, Brazil.
- The governor of Saga Prefecture announced the construction of Saga Airport in January 1969, and after years of studies and negotiations, construction commenced in 1997.
- Saga Airport (HSG) currently has only 1 runway.
- Saga was a candidate destination to receive an additional pair of Haneda Airport slots in November 2013, but its bid was rejected by the government due to its existing four-daily service and its proximity to Fukuoka Airport.
Facts about St. Mary's Airport (KSM):
- 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.
- St. Mary's Airport (KSM) has 2 runways.
- 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 | 27.67 miles (44.52 km) SW | Nagasaki Airport (NGS) | Nagasaki, Japan |     |
| 2 | 31.25 miles (50.29 km) NNE | Fukuoka Airport (FUK) | Fukuoka, Japan | |
| 3 | 38.64 miles (62.19 km) SE | Kumamoto Airport (KMJ) | Mashiki, Kumamoto Prefecture, Japan | |
| 4 | 51.01 miles (82.09 km) NW | Iki Airport (IKI) | Iki, Iki Island, Japan | |
| 5 | 60.26 miles (96.97 km) NE | Kokura Airport (KKJ) | Kita Kyūshū, Kyūshū, Japan | |
| 6 | 77.90 miles (125.37 km) NE | Yamaguchi Ube Airport (UBJ) | Ube, Yamaguchi Prefecture, Japan | |
| 7 | 85.93 miles (138.29 km) ENE | Oita Airport (OIT) | Oita, Japan | |
| 8 | 91.54 miles (147.33 km) WSW | Fukue Airport (FUJ) | Gotō, Nagasaki, Japan | |
| 9 | 96.12 miles (154.68 km) SSE | Kagoshima Airport (KOJ) | Kagoshima, Japan | |
| 10 | 110.41 miles (177.69 km) SE | Miyazaki Airport (KMI) | Miyazaki, Miyazaki Prefecture, Japan | |
| 11 | 135.67 miles (218.34 km) NE | Iwami Airport (IWJ) | Masuda, Shimane, Japan, Japan | |
| 12 | 145.86 miles (234.74 km) ENE | Matsuyama Airport (MYJ) | Matsuyama, Ehime, Japan | |
| 13 | 160.45 miles (258.23 km) NNW | Gimhae International Airport (PUS) | Busan, South Korea | |
| 14 | 174.59 miles (280.97 km) ENE | Hiroshima Airport (HIJ) | Hiroshima, Honshū, Japan | |
| 15 | 185.04 miles (297.79 km) NW | Sacheon Airport (HIN) | Sacheon, South Korea | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,275.45 miles (19,755.38 km) ESE | Rio Grande Regional Airport (RIG) | Rio Grande, Brazil | |
| 2 | 12,254.07 miles (19,720.96 km) ESE | Pelotas International Airport (PET) | Pelotas, Rio Grande do Sul, Brazil | |
| 3 | 12,202.14 miles (19,637.40 km) SSE | Salgado Filho International Airport (POA) | Porto Alegre, Rio Grande do Sul, Brazil | |
| 4 | 12,168.08 miles (19,582.57 km) E | Cerro Largo International Airport (MLZ) | Melo, Cerro Largo, Uruguay | |
| 5 | 12,167.91 miles (19,582.31 km) E | Treinta y Tres Airport (TYT) | Treinta y Tres, Treinta y Tres, Uruguay | |
| 6 | 12,151.87 miles (19,556.49 km) ESE | Comandante Gustavo Kraemer International Airport (BGX) | Bagé, Rio Grande do Sul, Brazil | |
| 7 | 12,135.51 miles (19,530.16 km) ESE | Cerro Largo International Airport (VCH) | Vichadero, Rivera, Uruguay | |
| 8 | 12,130.60 miles (19,522.26 km) S | Diomício Freitas/Forquilhinha Airport (CCM) | Criciúma, Santa Catarina, Brazil | |
| 9 | 12,106.06 miles (19,482.77 km) ESE | Capitán de Corbeta Carlos A. Curbelo International Airport (PDP) | Maldonado/Punta del Este, Maldonado, Uruguay | |
| 10 | 12,102.33 miles (19,476.76 km) SE | Santa Maria Airport (RIA) | Santa Maria, Rio Grande do Sul, Brazil | |
| 11 | 12,066.65 miles (19,419.34 km) ESE | Pres. Gral. Óscar D. Gestido International Airport (RVY) | Rivera, Rivera, Uruguay | |
| 12 | 12,064.32 miles (19,415.59 km) S | Antônio Correia Pinto de Macedo Airport (LAJ) | Lages, Santa Catarina, Brazil | |
| 13 | 12,063.67 miles (19,414.54 km) SSE | Lauro Kurtz Airport (PFB) | Passo Fundo, Rio Grande do Sul, Brazil | |
| 14 | 12,061.07 miles (19,410.36 km) ESE | Tacuarembó Airport (TAW) | Tacuarembó, Tacuarembó, Uruguay | |
| 15 | 12,055.80 miles (19,401.87 km) ESE | Carrasco/General Cesáreo L. Berisso International Airport (MVD) | Montevideo, Montevideo, Uruguay | |
| 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 | |