Nonstop flight route between Johnston Atoll, U.S. Minor Outlying Islands and Tacoma, Washington, United States:
Departure Airport:

Arrival Airport:

Distance from JON to TCM:
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- About this route
- JON Airport Information
- TCM Airport Information
- Facts about JON
- Facts about TCM
- Map of Nearest Airports to JON
- List of Nearest Airports to JON
- Map of Furthest Airports from JON
- List of Furthest Airports from JON
- Map of Nearest Airports to TCM
- List of Nearest Airports to TCM
- Map of Furthest Airports from TCM
- List of Furthest Airports from TCM
About this route:
A direct, nonstop flight between Johnston Atoll Airport (JON), Johnston Atoll, U.S. Minor Outlying Islands and McChord Field/McChord AFB (TCM), Tacoma, Washington, United States would travel a Great Circle distance of 3,392 miles (or 5,459 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 Johnston Atoll Airport and McChord Field/McChord AFB, 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 Johnston Atoll Airport and McChord Field/McChord AFB. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | JON / PJON |
Airport Name: | Johnston Atoll Airport |
Location: | Johnston Atoll, U.S. Minor Outlying Islands |
GPS Coordinates: | 16°43'42"N by 169°32'3"W |
Airport Type: | Public |
Elevation: | 7 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from JON |
More Information: | JON Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | TCM / KTCM |
Airport Names: |
|
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 |
Facts about Johnston Atoll Airport (JON):
- The furthest airport from Johnston Atoll Airport (JON) is Lubango Mukanka Airport (SDD), which is nearly antipodal to Johnston Atoll Airport (meaning Johnston Atoll Airport is almost on the exact opposite side of the Earth from Lubango Mukanka Airport), and is located 12,195 miles (19,627 kilometers) away in Lubango, Angola.
- The closest airport to Johnston Atoll Airport (JON) is PMRF Barking Sands (BKH), which is located 733 miles (1,179 kilometers) ENE of JON.
- Johnston Atoll Airport (JON) currently has only 1 runway.
- In February 1941 Johnston Atoll was designated as a Naval Defensive Sea Area and Airspace Reservation.
- Because of Johnston Atoll Airport's relatively low elevation of 7 feet, planes can take off or land at Johnston Atoll 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.
Facts about McChord Field/McChord AFB (TCM):
- On 28 February 1938 the airfield was officially transferred to the United States Government.
- The base was the location of the first of twenty-eight stations built by ADC as part of the permanent air defense radar network, and was the top-priority site for ADC radars.
- Starting in mid-1943 the training of B-17 and B-24 replacement crews began to be phased out, as the Second Air Force began ramping up training of B-29 Superfortress Very Heavy bomb groups, destined for Twentieth Air Force.
- SeADS was inactivated on 1 April 1966 and the SAGE headquarters combat center came under the 25th Air Division.
- 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.
- In 1968, McChord AFB was relieved of its assignment to the subsequently renamed Aerospace Defense Command and was reassigned to Military Airlift Command as one of three MAC bases in the western United States operating the C-141 Starlifter.
- McChord Field/McChord AFB (TCM) has 2 runways.
- 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.
- In addition to being known as "McChord Field/McChord AFB", another name for TCM is "Part of Air Mobility Command (AMC)".
- 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.