Nonstop flight route between Xi'an, Shaanxi, China and Boca Chica Key, Florida, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from SIA to NQX:
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- About this route
- SIA Airport Information
- NQX Airport Information
- Facts about SIA
- Facts about NQX
- Map of Nearest Airports to SIA
- List of Nearest Airports to SIA
- Map of Furthest Airports from SIA
- List of Furthest Airports from SIA
- Map of Nearest Airports to NQX
- List of Nearest Airports to NQX
- Map of Furthest Airports from NQX
- List of Furthest Airports from NQX
About this route:
A direct, nonstop flight between Xi'an Xiguan Airport (SIA), Xi'an, Shaanxi, China and NAS Key West (NQX), Boca Chica Key, Florida, United States would travel a Great Circle distance of 8,302 miles (or 13,361 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 Xi'an Xiguan Airport and NAS Key West, 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 Xi'an Xiguan Airport and NAS Key West. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | SIA / ZLSN | 
| Airport Names: | 
 | 
| Location: | Xi'an, Shaanxi, China | 
| GPS Coordinates: | 34°22'36"N by 109°7'12"E | 
| Area Served: | Xi'an | 
| Airport Type: | Public (defunct) | 
| # of Runways: | 1 | 
| View all routes: | Routes from SIA | 
| More Information: | SIA Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | NQX / KNQX | 
| Airport Names: | 
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| Location: | Boca Chica Key, Florida, United States | 
| GPS Coordinates: | 24°34'32"N by 81°41'20"W | 
| Operator/Owner: | United States Navy | 
| Airport Type: | Military: Naval Air Station | 
| Elevation: | 6 feet (2 meters) | 
| # of Runways: | 3 | 
| View all routes: | Routes from NQX | 
| More Information: | NQX Maps & Info | 
Facts about Xi'an Xiguan Airport (SIA):
- The closest airport to Xi'an Xiguan Airport (SIA) is Xi'an Xianyang International Airport (XIY), which is located 22 miles (35 kilometers) WNW of SIA.
- Xi'an Xiguan Airport (SIA) currently has only 1 runway.
- The furthest airport from Xi'an Xiguan Airport (SIA) is La Unión Airport (LUI), which is nearly antipodal to Xi'an Xiguan Airport (meaning Xi'an Xiguan Airport is almost on the exact opposite side of the Earth from La Unión Airport), and is located 12,392 miles (19,943 kilometers) away in La Unión, Honduras[disambiguation needed].
- In addition to being known as "Xi'an Xiguan Airport", other names for SIA include "西安西关机场" and "Xī'ān Xīguān Jīchǎng".
Facts about NAS Key West (NQX):
- The closest airport to NAS Key West (NQX) is Key West International Airport (EYW), which is located only 5 miles (7 kilometers) WSW of NQX.
- On January 18, 1918, the first class of student aviators arrived for seaplane training, which launched the station's reputation as a premier training site for Naval Aviators, a reputation which continues today.
- The air station is also host to several tenant commands, including Fighter Squadron Composite 111, Strike Fighter Squadron 106 Detachment Key West, the U.S.
- On 5 October 2001, Naval Air Station Key West was temporarily downgraded and redesignated as Naval Air Facility Key West, but on 1 April 2003, the air facility was upgraded and restored back to full air station status as Naval Air Station Key West.
- NAS Key West (NQX) has 3 runways.
- The nation's southernmost Naval Base proved to be an ideal year-round training facility with rapid access to the open sea lanes and ideal flying conditions for Naval Aviation.
- By 1964, the USAF added an AN/FPS-6A height-finder radar at NAS Key West, which was modified to an AN/FPS-90 set when a second radar was added.
- Because of NAS Key West's relatively low elevation of 6 feet, planes can take off or land at NAS Key West 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 "NAS Key West", other names for NQX include "Naval Air Station Key West" and "NQX[1]".
- The furthest airport from NAS Key West (NQX) is Cocos (Keeling) Island Airport (CCK), which is located 11,575 miles (18,629 kilometers) away in Cocos Islands, Australia.




