Nonstop flight route between St. Augustine, Florida, United States and Xi'an, Shaanxi, China:
Departure Airport:

Arrival Airport:

Distance from UST to SIA:
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- About this route
- UST Airport Information
- SIA Airport Information
- Facts about UST
- Facts about SIA
- Map of Nearest Airports to UST
- List of Nearest Airports to UST
- Map of Furthest Airports from UST
- List of Furthest Airports from UST
- Map of Nearest Airports to SIA
- List of Nearest Airports to SIA
- Map of Furthest Airports from SIA
- List of Furthest Airports from SIA
About this route:
A direct, nonstop flight between Northeast Florida Regional Airport (UST), St. Augustine, Florida, United States and Xi'an Xiguan Airport (SIA), Xi'an, Shaanxi, China would travel a Great Circle distance of 7,940 miles (or 12,778 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 Northeast Florida Regional Airport and Xi'an Xiguan 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 Northeast Florida Regional Airport and Xi'an Xiguan Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | UST / KSGJ |
Airport Names: |
|
Location: | St. Augustine, Florida, United States |
GPS Coordinates: | 29°57'33"N by 81°20'22"W |
Operator/Owner: | St. Augustine - St. Johns County Airport Authority |
Airport Type: | Public |
Elevation: | 10 feet (3 meters) |
# of Runways: | 6 |
View all routes: | Routes from UST |
More Information: | UST Maps & Info |
Arrival 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 |
Facts about Northeast Florida Regional Airport (UST):
- Northeast Florida Regional Airport (UST) has 6 runways.
- The furthest airport from Northeast Florida Regional Airport (UST) is Shark Bay Airport (MJK), which is located 11,485 miles (18,483 kilometers) away in Monkey Mia, Western Australia, Australia.
- Because of Northeast Florida Regional Airport's relatively low elevation of 10 feet, planes can take off or land at Northeast Florida Regional 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.
- Airport improvements continued in the 1990s.
- In addition to being known as "Northeast Florida Regional Airport", another name for UST is "SGJ".
- The closest airport to Northeast Florida Regional Airport (UST) is NAS Jacksonville (NIP), which is located 28 miles (45 kilometers) NW of UST.
Facts about Xi'an Xiguan Airport (SIA):
- 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".
- 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].
- Xi'an Xiguan Airport (SIA) currently has only 1 runway.
- 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.