Nonstop flight route between Shemya, Alaska, United States and Tainan City, Taiwan, Republic of China:
Departure Airport:
Arrival Airport:
Distance from SYA to TNN:
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- About this route
 - SYA Airport Information
 - TNN Airport Information
 - Facts about SYA
 - Facts about TNN
 - Map of Nearest Airports to SYA
 - List of Nearest Airports to SYA
 - Map of Furthest Airports from SYA
 - List of Furthest Airports from SYA
 - Map of Nearest Airports to TNN
 - List of Nearest Airports to TNN
 - Map of Furthest Airports from TNN
 - List of Furthest Airports from TNN
 
About this route:
A direct, nonstop flight between Eareckson Air Station (SYA), Shemya, Alaska, United States and Tainan Airport (TNN), Tainan City, Taiwan, Republic of China would travel a Great Circle distance of 3,475 miles (or 5,592 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 Eareckson Air Station and Tainan 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 Eareckson Air Station and Tainan Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SYA / PASY | 
| Airport Names: | 
                    
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| Location: | Shemya, Alaska, United States | 
| GPS Coordinates: | 52°42'43"N by 174°6'48"E | 
| Operator/Owner: | U.S. Air Force | 
| Airport Type: | Military | 
| Elevation: | 97 feet (30 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from SYA | 
| More Information: | SYA Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | TNN / RCNN | 
| Airport Names: | 
                    
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| Location: | Tainan City, Taiwan, Republic of China | 
| GPS Coordinates: | 22°57'1"N by 120°12'20"E | 
| Operator/Owner: | Civil Aeronautics Administration | 
| Airport Type: | Public | 
| Elevation: | 63 feet (19 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from TNN | 
| More Information: | TNN Maps & Info | 
Facts about Eareckson Air Station (SYA):
- On 10 July 1943, eight B-25 Mitchells from the 77th Bombardment Squadron left Adak AAF and refueled at Alexai Point AAF on Attu.
 - Because of Eareckson Air Station's relatively low elevation of 97 feet, planes can take off or land at Eareckson Air Station 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.
 - In addition to being known as "Eareckson Air Station", other names for SYA include "Shemya Air Force Base", "Shemya Army Airfield" and " ".
 - Additional aircraft and personnel reductions occurred in 1945 and almost all air bases other than Alexi Point, Shemya and Davis in the Aleutians were reduced to caretaker status.
 - The base host squadron was re-designated the 5073rd Air Base Squadron on October 1962, and upgraded to a group on 15 October 1974 in recognition of the number and complexities of the tenant units it supported.
 - Eareckson Air Station (SYA) currently has only 1 runway.
 - The closest airport to Eareckson Air Station (SYA) is Casco Cove Coast Guard Station (ATU), which is located 40 miles (65 kilometers) WNW of SYA.
 - The furthest airport from Eareckson Air Station (SYA) is Cape Town International Airport (CPT), which is located 10,668 miles (17,168 kilometers) away in Cape Town, South Africa.
 - Eareckson Air Station is located on the western tip of Alaska's Aleutian islands near the larger island of Attu, and is located approximately 1500 miles southwest of Anchorage.
 
Facts about Tainan Airport (TNN):
- On 21 March 2003, TransAsia Airways flight 543 on a flight from Taipei Songshan Airport to Tainan Airport, collided with a truck that was on runway 36R.
 - International flights began on 18 July 2013 to Hong Kong, with a 3 times weekly service by China Airlines using Boeing 737-800s.
 - In addition to being known as "Tainan Airport", other names for TNN include "臺南航空站台南機場" and "Táinán HángkōngzhànTáinán Jīchǎng".
 - Tainan Airport is a commercial airport located in South District, Tainan City, Taiwan.
 - The furthest airport from Tainan Airport (TNN) is Dr. Luis María Argaña International Airport (ESG), which is nearly antipodal to Tainan Airport (meaning Tainan Airport is almost on the exact opposite side of the Earth from Dr. Luis María Argaña International Airport), and is located 12,355 miles (19,883 kilometers) away in Mariscal Estigarribia, Paraguay.
 - Tainan Airport (TNN) has 2 runways.
 - On 24 February 1969, Far Eastern Air Transport Flight 104, a Handley Page Dart Herald with 36 passengers and crew board, crashed while attempting an emergency landing at Tainan.
 - Because of Tainan Airport's relatively low elevation of 63 feet, planes can take off or land at Tainan 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 Tainan Airport (TNN) is Kaohsiung International Airport (Kaohsiung Siaogang Airport) (KHH), which is located 27 miles (44 kilometers) SSE of TNN.
 
