Nonstop flight route between Fort Sill, Oklahoma, United States and Greenville, Illinois, United States:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(38°50'9"N by 89°22'45"W)
Distance from FSI to GRE:
576.85 miles (928.35 km)
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Jump to:
- About this route
- FSI Airport Information
- GRE Airport Information
- Facts about FSI
- Facts about GRE
- 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 GRE
- List of Nearest Airports to GRE
- Map of Furthest Airports from GRE
- List of Furthest Airports from GRE
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Greenville Airport (GRE), Greenville, Illinois, United States would travel a Great Circle distance of 577 miles (or 928 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 relatively short distance between Henry Post Army Airfield and Greenville Airport, the route shown on this map most likely still appears to be a straight line.
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: | GRE / KGRE |
| Airport Name: | Greenville Airport |
| Location: | Greenville, Illinois, United States |
| GPS Coordinates: | 38°50'9"N by 89°22'45"W |
| Area Served: | Greenville, Illinois |
| Operator/Owner: | Greenville Airport Authority |
| Airport Type: | Public |
| Elevation: | 541 feet (165 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from GRE |
| More Information: | GRE Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
Facts about Greenville Airport (GRE):
- Because of Greenville Airport's relatively low elevation of 541 feet, planes can take off or land at Greenville 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.
- The closest airport to Greenville Airport (GRE) is Salem–Leckrone Airport (SLO), which is located 26 miles (42 kilometers) ESE of GRE.
- The furthest airport from Greenville Airport (GRE) is Margaret River Airport (MGV), which is located 11,038 miles (17,764 kilometers) away in Margaret River, Western Australia, Australia.
- Greenville Airport (GRE) has 2 runways.
| 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 | 26.05 miles (41.92 km) ESE | Salem–Leckrone Airport (SLO) | Salem, Illinois, United States | |
| 2 | 31.76 miles (51.12 km) SW | MidAmerica St. Louis Airport (BLV) | Belleville, Illinois, United States | |
| 3 | 36.08 miles (58.06 km) W | St. Louis Regional Airport (ALN) | Alton, Illinois, United States | |
| 4 | 45.23 miles (72.79 km) SE | Mt. Vernon Airport (MVN) | Mount Vernon, Illinois, United States | |
| 5 | 45.73 miles (73.59 km) WSW | St. Louis Downtown Airport (CPS) | Cahokia, Illinois (near St. Louis), United States | |
| 6 | 53.25 miles (85.70 km) W | Lambert–St. Louis International Airport (STL) | St. Louis, Missouri, United States | |
| 7 | 69.63 miles (112.05 km) W | Spirit of St. Louis Airport (SUS) | Chesterfield, Missouri, United States | |
| 8 | 71.46 miles (115.00 km) NNW | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| 9 | 73.43 miles (118.17 km) S | Southern Illinois Airport (MDH) | Carbondale/Murphysboro, Illinois, United States | |
| 10 | 73.76 miles (118.70 km) NE | Coles County Memorial Airport (MTO) | Mattoon/Charleston, Illinois, United States | |
| 11 | 74.24 miles (119.47 km) NNE | Decatur Airport (DEC) | Decatur, Illinois, United States | |
| 12 | 77.32 miles (124.43 km) SSE | Williamson County Regional Airport (MWA) | Marion, Illinois, United States | |
| 13 | 95.63 miles (153.90 km) E | Lawrenceville–Vincennes International Airport (LWV) | Lawrenceville, Illinois, United States | |
| 14 | 98.93 miles (159.21 km) E | O'Neal Airport (OEA) | Vincennes, Indiana, United States | |
| 15 | 101.14 miles (162.78 km) E | Ed-Air Airport (OTN) | Oaktown, Indiana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,038.23 miles (17,764.26 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,016.06 miles (17,728.59 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,993.29 miles (17,691.94 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 4 | 10,990.64 miles (17,687.68 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,962.07 miles (17,641.70 km) W | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,946.72 miles (17,616.99 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,937.51 miles (17,602.17 km) W | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,932.84 miles (17,594.65 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 9 | 10,916.33 miles (17,568.08 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 10 | 10,896.44 miles (17,536.07 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 11 | 10,895.66 miles (17,534.82 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 12 | 10,875.88 miles (17,502.99 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,844.18 miles (17,451.98 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,843.12 miles (17,450.27 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,833.47 miles (17,434.74 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |