Nonstop flight route between St. Mary's, Alaska, United States and Yamagata, Japan:
Departure Airport:
(62°3'38"N by 163°18'6"W)
Arrival Airport:
(38°48'43"N by 139°47'13"E)
Distance from KSM to SYO:
2,842.93 miles (4,575.25 km)
Share this route:
Jump to:
- About this route
- KSM Airport Information
- SYO Airport Information
- Facts about KSM
- Facts about SYO
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to SYO
- List of Nearest Airports to SYO
- Map of Furthest Airports from SYO
- List of Furthest Airports from SYO
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Shonai Airport (SYO), Yamagata, Japan would travel a Great Circle distance of 2,843 miles (or 4,575 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 St. Mary's Airport and Shonai 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 St. Mary's Airport and Shonai Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
| IATA / ICAO Codes: | SYO / RJSY |
| Airport Names: |
|
| Location: | Yamagata, Japan |
| GPS Coordinates: | 38°48'43"N by 139°47'13"E |
| Area Served: | Sakata, Yamagata |
| Airport Type: | Public |
| Elevation: | 72 feet (22 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SYO |
| More Information: | SYO Maps & Info |
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.
- 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.
- St. Mary's Airport (KSM) has 2 runways.
Facts about Shonai Airport (SYO):
- Shonai Airport (SYO) currently has only 1 runway.
- Seiko Epson has also used the airport for weekly employee charter flights to and from Matsumoto since 1997.
- The furthest airport from Shonai Airport (SYO) is Rio Grande Regional Airport (RIG), which is located 11,620 miles (18,701 kilometers) away in Rio Grande, Brazil.
- In addition to being known as "Shonai Airport", other names for SYO include "庄内空港" and "Shonai Kūkō".
- Because of Shonai Airport's relatively low elevation of 72 feet, planes can take off or land at Shonai 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 Shonai Airport (SYO) is Yamagata Airport (GAJ), which is located 42 miles (67 kilometers) SE of SYO.
| 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 | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.94 miles (67.49 km) SE | Yamagata Airport (GAJ) | Yamagata, Honshū, Japan | |
| 2 | 60.12 miles (96.75 km) NNE | Akita Airport (AXT) | Akita, Japan | |
| 3 | 69.57 miles (111.96 km) SSW | Niigata Airport (KIJ) | Niigata, Japan | |
| 4 | 76.77 miles (123.54 km) SE | Sendai Airport (SDJ) | Natori, Japan | |
| 5 | 83.88 miles (134.99 km) ENE | Hanamaki Airport (HNA) | Morioka, Honshū, Japan | |
| 6 | 100.29 miles (161.40 km) NNE | Odate-Noshiro Airport (ONJ) | Kitaakita, Akita, Japan | |
| 7 | 114.91 miles (184.94 km) SSE | Fukushima Airport (FKS) | Sugawa, Fukushima, Japan | |
| 8 | 141.10 miles (227.08 km) NNE | Aomori Airport (AOJ) | Aomori, Japan | |
| 9 | 149.76 miles (241.01 km) NE | JMSDF Hachinohe Air Base (HHE) | Hachinohe, Honshū, Japan | |
| 10 | 155.53 miles (250.31 km) NNE | Misawa Air Base 三沢飛行場 Misawa Hikōjō (MSJ) | Misawa, Aomori, Japan | |
| 11 | 158.83 miles (255.61 km) S | Utsunomiya Air Field (QUT) | Nikkō / Utsunomiya, Tochigi Prefecture, Japan | |
| 12 | 206.22 miles (331.88 km) SW | Toyama Airport (TOY) | Toyama, Toyama, Japan | |
| 13 | 209.41 miles (337.02 km) SSW | Matsumoto Airport (MMJ) | Matsumoto, Nagano, Japan | |
| 14 | 211.51 miles (340.39 km) NNE | Hakodate Airport (HKD) | Hakodate, Hokkaidō, Japan | |
| 15 | 213.08 miles (342.91 km) S | Narita International Airport (NRT) | Narita (near Tokyo), Japan | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,620.18 miles (18,700.82 km) ESE | Rio Grande Regional Airport (RIG) | Rio Grande, Brazil | |
| 2 | 11,596.75 miles (18,663.11 km) ESE | Pelotas International Airport (PET) | Pelotas, Rio Grande do Sul, Brazil | |
| 3 | 11,570.82 miles (18,621.39 km) ESE | Capitán de Corbeta Carlos A. Curbelo International Airport (PDP) | Maldonado/Punta del Este, Maldonado, Uruguay | |
| 4 | 11,565.45 miles (18,612.73 km) SE | Salgado Filho International Airport (POA) | Porto Alegre, Rio Grande do Sul, Brazil | |
| 5 | 11,562.91 miles (18,608.66 km) SE | Diomício Freitas/Forquilhinha Airport (CCM) | Criciúma, Santa Catarina, Brazil | |
| 6 | 11,557.93 miles (18,600.64 km) ESE | Treinta y Tres Airport (TYT) | Treinta y Tres, Treinta y Tres, Uruguay | |
| 7 | 11,533.00 miles (18,560.52 km) ESE | Cerro Largo International Airport (MLZ) | Melo, Cerro Largo, Uruguay | |
| 8 | 11,529.55 miles (18,554.97 km) SE | Florianópolis-Hercílio Luz International Airport (FLN) | Florianópolis, Santa Catarina, Brazil | |
| 9 | 11,521.28 miles (18,541.66 km) ESE | Carrasco/General Cesáreo L. Berisso International Airport (MVD) | Montevideo, Montevideo, Uruguay | |
| 10 | 11,516.37 miles (18,533.75 km) E | Villa Gesell Airport (VLG) | Villa Gesell, Buenos Aires, Argentina | |
| 11 | 11,500.37 miles (18,508.01 km) ESE | Comandante Gustavo Kraemer International Airport (BGX) | Bagé, Rio Grande do Sul, Brazil | |
| 12 | 11,495.87 miles (18,500.77 km) E | Astor Piazzolla International Airport (MDQ) | Mar del Plata, Buenos Aires Province, Argentina | |
| 13 | 11,491.78 miles (18,494.19 km) ESE | Cerro Largo International Airport (VCH) | Vichadero, Rivera, Uruguay | |
| 14 | 11,482.84 miles (18,479.80 km) E | Miramar Airport (MJR) | Miramar, Buenos Aires, Argentina | |
| 15 | 11,479.59 miles (18,474.56 km) SE | Antônio Correia Pinto de Macedo Airport (LAJ) | Lages, Santa Catarina, Brazil | |