Nonstop flight route between Norman, Oklahoma, United States and Xi'an, Shaanxi, China:
Departure Airport:

Arrival Airport:

Distance from OUN to SIA:
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- About this route
- OUN Airport Information
- SIA Airport Information
- Facts about OUN
- Facts about SIA
- Map of Nearest Airports to OUN
- List of Nearest Airports to OUN
- Map of Furthest Airports from OUN
- List of Furthest Airports from OUN
- 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 University of Oklahoma Max Westheimer Airport (OUN), Norman, Oklahoma, United States and Xi'an Xiguan Airport (SIA), Xi'an, Shaanxi, China would travel a Great Circle distance of 7,329 miles (or 11,795 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 University of Oklahoma Max Westheimer 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 University of Oklahoma Max Westheimer 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: | OUN / KOUN |
Airport Name: | University of Oklahoma Max Westheimer Airport |
Location: | Norman, Oklahoma, United States |
GPS Coordinates: | 35°14'44"N by 97°28'19"W |
Area Served: | Norman, Oklahoma |
Operator/Owner: | University of Oklahoma |
Airport Type: | Public |
Elevation: | 1182 feet (360 meters) |
# of Runways: | 2 |
View all routes: | Routes from OUN |
More Information: | OUN Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SIA / ZLSN |
Airport Names: |
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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 University of Oklahoma Max Westheimer Airport (OUN):
- The furthest airport from University of Oklahoma Max Westheimer Airport (OUN) is Sir Gaëtan Duval Airport (RRG), which is located 10,853 miles (17,467 kilometers) away in Rodrigues Island, Mauritius.
- The closest airport to University of Oklahoma Max Westheimer Airport (OUN) is Will Rogers World Airport (OKC), which is located only 13 miles (20 kilometers) NW of OUN.
- University of Oklahoma Max Westheimer Airport (OUN) has 2 runways.
- The Cleveland County Composite Squadron of Civil Air Patrol meets on Tuesday evenings in a hangar provided by the City of Norman, east of the terminal.
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.