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

Arrival Airport:

Distance from PWM to SIA:
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- About this route
- PWM Airport Information
- SIA Airport Information
- Facts about PWM
- Facts about SIA
- Map of Nearest Airports to PWM
- List of Nearest Airports to PWM
- Map of Furthest Airports from PWM
- List of Furthest Airports from PWM
- 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 Portland International Jetport (PWM), Portland, Maine, United States and Xi'an Xiguan Airport (SIA), Xi'an, Shaanxi, China would travel a Great Circle distance of 7,046 miles (or 11,339 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 Portland International Jetport 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 Portland International Jetport 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: | PWM / KPWM |
Airport Name: | Portland International Jetport |
Location: | Portland, Maine, United States |
GPS Coordinates: | 43°38'45"N by 70°18'33"W |
Area Served: | Portland, Maine |
Airport Type: | Public |
Elevation: | 76 feet (23 meters) |
# of Runways: | 2 |
View all routes: | Routes from PWM |
More Information: | PWM 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 Portland International Jetport (PWM):
- Because of Portland International Jetport's relatively low elevation of 76 feet, planes can take off or land at Portland International Jetport 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 1972 Northeast Airlines was bought by Delta Air Lines which retained its routes to Bangor, Boston, and New York.
- After Independence Air went bankrupt Portland had no low-cost carrier, causing fares to go up, and passenger numbers to decline.
- Portland International Jetport (PWM) has 2 runways.
- Portland International Jetport is a public airport two miles west of downtown Portland, in Cumberland County, Maine.
- The furthest airport from Portland International Jetport (PWM) is Margaret River Airport (MGV), which is located 11,705 miles (18,838 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Portland International Jetport (PWM) is Naval Air Station Brunswick (NHZ), which is located 25 miles (40 kilometers) NE of PWM.
- 1987 saw the arrival of Continental Airlines, when the airline bought PEOPLExpress and took over their routes.
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".
- 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.
- 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].