Nonstop flight route between Fort Sill, Oklahoma, United States and Granite Mountain, Alaska, United States:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(65°24'7"N by 161°16'53"W)
Distance from FSI to GMT:
3,295.49 miles (5,303.56 km)
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- About this route
- FSI Airport Information
- GMT Airport Information
- Facts about FSI
- Facts about GMT
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to GMT
- List of Nearest Airports to GMT
- Map of Furthest Airports from GMT
- List of Furthest Airports from GMT
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Granite Mountain Air Station (GMT), Granite Mountain, Alaska, United States would travel a Great Circle distance of 3,295 miles (or 5,304 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 Henry Post Army Airfield and Granite Mountain Air Station, 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 Henry Post Army Airfield and Granite Mountain Air Station. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | FSI / KFSI |
| Airport Name: | Henry Post Army Airfield |
| Location: | Fort Sill, Oklahoma, United States |
| GPS Coordinates: | 34°38'58"N by 98°24'7"W |
| Operator/Owner: | U.S. Army ATCA-ASO |
| Airport Type: | Military |
| Elevation: | 1189 feet (362 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from FSI |
| More Information: | FSI Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | GMT / PAGZ |
| Airport Names: |
|
| Location: | Granite Mountain, Alaska, United States |
| GPS Coordinates: | 65°24'7"N by 161°16'53"W |
| Operator/Owner: | U.S. Government |
| Airport Type: | Private |
| Elevation: | 1313 feet (400 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GMT |
| More Information: | GMT Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- Henry Post Army Airfield was the first home of all Army Aviation Training after World War II before moving to Fort Rucker, Alabama in 1954.
- The closest airport to Henry Post Army Airfield (FSI) is Lawton–Fort Sill Regional Airport (LAW), which is located only 6 miles (9 kilometers) S of FSI.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- The furthest airport from Henry Post Army Airfield (FSI) is Sir Gaëtan Duval Airport (RRG), which is located 10,920 miles (17,575 kilometers) away in Rodrigues Island, Mauritius.
Facts about Granite Mountain Air Station (GMT):
- Granite Mountain Air Station (GMT) currently has only 1 runway.
- In addition to being known as "Granite Mountain Air Station", another name for GMT is "GSZ".
- The furthest airport from Granite Mountain Air Station (GMT) is Cape Town International Airport (CPT), which is located 10,265 miles (16,520 kilometers) away in Cape Town, South Africa.
- The closest airport to Granite Mountain Air Station (GMT) is Haycock Airport (HAY), which is located only 14 miles (23 kilometers) SSE of GMT.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 5.72 miles (9.20 km) S | Lawton–Fort Sill Regional Airport (LAW) | Lawton, Oklahoma, United States |     |
| 2 | 28.03 miles (45.12 km) ESE | Halliburton Field (DUC) | Duncan, Oklahoma, United States | |
| 3 | 38.98 miles (62.73 km) WSW | Frederick Regional Airport (FDR) | Frederick, Oklahoma, United States | |
| 4 | 39.53 miles (63.61 km) NE | Chickasha Municipal Airport (CHK) | Chickasha, Oklahoma, United States | |
| 5 | 43.74 miles (70.39 km) WNW | Hobart Regional Airport (HBR) | Hobart, Oklahoma, United States | |
| 6 | 45.95 miles (73.94 km) S | Sheppard Air Force Base (SPS) | Wichita Falls, Texas, United States | |
| 7 | 49.22 miles (79.21 km) W | Altus Air Force Base (LTS) | Altus, Oklahoma, United States | |
| 8 | 53.30 miles (85.78 km) W | Altus/Quartz Mountain Regional Airport (AXS) | Altus, Oklahoma, United States | |
| 9 | 54.76 miles (88.12 km) S | Kickapoo Downtown Airport (KIP) | Wichita Falls, Texas, United States | |
| 10 | 65.69 miles (105.71 km) NW | Clinton-Sherman Industrial Airpark (CSM) | Clinton, Oklahoma, United States | |
| 11 | 66.85 miles (107.58 km) NE | University of Oklahoma Max Westheimer Airport (OUN) | Norman, Oklahoma, United States | |
| 12 | 68.33 miles (109.96 km) NNW | Clinton Regional Airport (CLK) | Clinton, Oklahoma, United States | |
| 13 | 68.51 miles (110.26 km) NE | Will Rogers World Airport (OKC) | Oklahoma City, Oklahoma, United States | |
| 14 | 74.55 miles (119.97 km) NE | Wiley Post Airport (PWA) | Oklahoma City, Oklahoma, United States | |
| 15 | 78.07 miles (125.64 km) NE | Tinker Air Force Base (TIK) | Oklahoma City, Oklahoma, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,920.33 miles (17,574.52 km) SE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,680.39 miles (17,188.37 km) ESE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,614.31 miles (17,082.03 km) SW | Cocos (Keeling) Island Airport (CCK) | Cocos Islands, Australia | |
| 4 | 10,601.93 miles (17,062.12 km) ESE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 5 | 10,589.08 miles (17,041.43 km) ESE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,532.55 miles (16,950.46 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 7 | 10,512.35 miles (16,917.95 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 8 | 10,492.35 miles (16,885.76 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 9 | 10,478.49 miles (16,863.45 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 10 | 10,478.05 miles (16,862.75 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 11 | 10,472.77 miles (16,854.25 km) W | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 12 | 10,460.30 miles (16,834.17 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 13 | 10,458.62 miles (16,831.48 km) W | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 14 | 10,456.31 miles (16,827.76 km) W | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 15 | 10,452.67 miles (16,821.90 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 14.35 miles (23.10 km) SSE | Haycock Airport (HAY) | Haycock, Alaska, United States | |
| 2 | 32.19 miles (51.80 km) S | Koyuk Alfred Adams Airport (KKA) | Koyuk, Alaska, United States | |
| 3 | 40.21 miles (64.72 km) N | Buckland Airport (BKC) | Buckland, Alaska, United States | |
| 4 | 61.58 miles (99.10 km) SSW | Elim Airport (ELI) | Elim, Alaska, United States | |
| 5 | 62.47 miles (100.54 km) NW | Deering Airport (DRG) | Deering, Alaska, United States | |
| 6 | 71.26 miles (114.69 km) S | Shaktoolik Airport (SKK) | Shaktoolik, Alaska, United States | |
| 7 | 77.50 miles (124.72 km) SW | Golovin Airport (GLV) | Golovin, Alaska, United States | |
| 8 | 78.48 miles (126.30 km) WSW | Council Airport (CIL) | Council, Alaska, United States | |
| 9 | 79.29 miles (127.60 km) SW | White Mountain Airport (WMO) | White Mountain, Alaska, United States | |
| 10 | 90.41 miles (145.50 km) NNE | Selawik Airport (WLK) | Selawik, Alaska, United States | |
| 11 | 98.05 miles (157.80 km) N | Robert (Bob) Curtis Memorial Airport (ORV) | Noorvik, Alaska, United States | |
| 12 | 104.33 miles (167.90 km) ESE | Nulato Airport (NUL) | Nulato, Alaska, United States | |
| 13 | 105.57 miles (169.90 km) S | Unalakleet Airport (UNK) | Unalakleet, Alaska, United States | |
| 14 | 105.63 miles (170.00 km) SE | Kaltag Airport (KAL) | Kaltag, Alaska, United States | |
| 15 | 108.84 miles (175.16 km) NNW | Ralph Wien Memorial Airport (OTZ) | Kotzebue, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,265.00 miles (16,519.87 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,262.23 miles (16,515.41 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,247.19 miles (16,491.22 km) S | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,210.09 miles (16,431.51 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,207.54 miles (16,427.40 km) ESE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |
| 6 | 10,168.15 miles (16,364.01 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 7 | 10,059.89 miles (16,189.78 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 8 | 9,999.43 miles (16,092.48 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 9,967.87 miles (16,041.70 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 10 | 9,949.97 miles (16,012.89 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 11 | 9,947.17 miles (16,008.37 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 12 | 9,946.54 miles (16,007.36 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 13 | 9,941.11 miles (15,998.62 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 14 | 9,941.11 miles (15,998.62 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 15 | 9,939.41 miles (15,995.89 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |