Nonstop flight route between Tacoma, Washington, United States and Sion, Switzerland:
Departure Airport:

Arrival Airport:

Distance from TCM to SIR:
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- About this route
- TCM Airport Information
- SIR Airport Information
- Facts about TCM
- Facts about SIR
- Map of Nearest Airports to TCM
- List of Nearest Airports to TCM
- Map of Furthest Airports from TCM
- List of Furthest Airports from TCM
- Map of Nearest Airports to SIR
- List of Nearest Airports to SIR
- Map of Furthest Airports from SIR
- List of Furthest Airports from SIR
About this route:
A direct, nonstop flight between McChord Field/McChord AFB (TCM), Tacoma, Washington, United States and Sion Airport (SIR), Sion, Switzerland would travel a Great Circle distance of 5,308 miles (or 8,543 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 McChord Field/McChord AFB and Sion 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 McChord Field/McChord AFB and Sion Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | TCM / KTCM |
Airport Names: |
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Location: | Tacoma, Washington, United States |
GPS Coordinates: | 47°8'16"N by 122°28'35"W |
Operator/Owner: | U.S. Air Force |
Airport Type: | Military: Air Force Base |
Elevation: | 322 feet (98 meters) |
# of Runways: | 2 |
View all routes: | Routes from TCM |
More Information: | TCM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SIR / LSGS |
Airport Names: |
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Location: | Sion, Switzerland |
GPS Coordinates: | 46°13'10"N by 7°19'36"E |
Area Served: | Sion, Switzerland |
Elevation: | 1585 feet (483 meters) |
# of Runways: | 2 |
View all routes: | Routes from SIR |
More Information: | SIR Maps & Info |
Facts about McChord Field/McChord AFB (TCM):
- Because of McChord Field/McChord AFB's relatively low elevation of 322 feet, planes can take off or land at McChord Field/McChord AFB 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.
- Following the end of the war in Europe, McChord redeployed thousands of troops arriving from the European theater to the Pacific as part of Air Transport Command.
- In 1975, TAC divested itself of its C-130 Hercules tactical airlift fleet, transferring all tactical airlift wings, groups and squadrons to MAC.
- SeADS was inactivated on 1 April 1966 and the SAGE headquarters combat center came under the 25th Air Division.
- The furthest airport from McChord Field/McChord AFB (TCM) is Tôlanaro Airport (FTU), which is located 10,803 miles (17,386 kilometers) away in Tôlanaro, Madagascar.
- On 28 February 1938 the airfield was officially transferred to the United States Government.
- The closest airport to McChord Field/McChord AFB (TCM) is Gray Army Airfield (GRF), which is located only 6 miles (10 kilometers) SW of TCM.
- McChord Field/McChord AFB (TCM) has 2 runways.
- In addition to being known as "McChord Field/McChord AFB", another name for TCM is "Part of Air Mobility Command (AMC)".
Facts about Sion Airport (SIR):
- Sion Airport (SIR) has 2 runways.
- The closest airport to Sion Airport (SIR) is Aosta Valley Airport (AOT), which is located 33 miles (54 kilometers) S of SIR.
- The furthest airport from Sion Airport (SIR) is Chatham Islands (CHT), which is nearly antipodal to Sion Airport (meaning Sion Airport is almost on the exact opposite side of the Earth from Chatham Islands), and is located 12,188 miles (19,615 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- In addition to being known as "Sion Airport", other names for SIR include "Aéroport de Sion" and "LSGS /LSMS".