Nonstop flight route between Keokuk, Iowa, United States and Fort Sill, Oklahoma, United States:
Departure Airport:
(40°27'36"N by 91°25'42"W)
Arrival Airport:
(34°38'58"N by 98°24'7"W)
Distance from EOK to FSI:
553.77 miles (891.20 km)
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Jump to:
- About this route
- EOK Airport Information
- FSI Airport Information
- Facts about EOK
- Facts about FSI
- Map of Nearest Airports to EOK
- List of Nearest Airports to EOK
- Map of Furthest Airports from EOK
- List of Furthest Airports from EOK
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
About this route:
A direct, nonstop flight between Keokuk Municipal Airport (EOK), Keokuk, Iowa, United States and Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States would travel a Great Circle distance of 554 miles (or 891 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 Keokuk Municipal Airport and Henry Post Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | EOK / KEOK |
| Airport Name: | Keokuk Municipal Airport |
| Location: | Keokuk, Iowa, United States |
| GPS Coordinates: | 40°27'36"N by 91°25'42"W |
| Area Served: | Keokuk, Iowa |
| Operator/Owner: | City of Keokuk |
| Airport Type: | Public |
| Elevation: | 671 feet (205 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from EOK |
| More Information: | EOK Maps & Info |
Arrival 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 |
Facts about Keokuk Municipal Airport (EOK):
- Keokuk Municipal Airport (EOK) has 2 runways.
- Because of Keokuk Municipal Airport's relatively low elevation of 671 feet, planes can take off or land at Keokuk Municipal 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 furthest airport from Keokuk Municipal Airport (EOK) is Margaret River Airport (MGV), which is located 10,915 miles (17,566 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Keokuk Municipal Airport (EOK) is Southeast Iowa Regional Airport (BRL), which is located 27 miles (44 kilometers) NE of EOK.
Facts about Henry Post Army Airfield (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.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 27.40 miles (44.10 km) NE | Southeast Iowa Regional Airport (BRL) | Burlington, Iowa, United States |     |
| 2 | 33.90 miles (54.56 km) N | Mount Pleasant Municipal Airport (MPZ) | Mount Pleasant, Iowa, United States | |
| 3 | 37.81 miles (60.85 km) SSE | Quincy Regional Airport (UIN) | Quincy, Illinois, United States | |
| 4 | 40.99 miles (65.97 km) E | Macomb Municipal Airport (MQB) | Macomb, Illinois, United States | |
| 5 | 50.30 miles (80.95 km) NW | Fairfield Municipal Airport (FFL) | Fairfield, Iowa, United States | |
| 6 | 61.82 miles (99.48 km) ENE | Galesburg Municipal Airport (GBG) | Galesburg, Illinois, United States | |
| 7 | 64.07 miles (103.11 km) WSW | Kirksville Regional Airport (IRK) | Kirksville, Missouri, United States | |
| 8 | 64.41 miles (103.65 km) NNE | Muscatine Municipal Airport (MUT) | Muscatine, Iowa, United States | |
| 9 | 69.58 miles (111.97 km) NW | Ottumwa Regional Airport (OTM) | Ottumwa, Iowa, United States | |
| 10 | 81.71 miles (131.50 km) N | Iowa City Municipal Airport (IOW) | Iowa City, Iowa, United States | |
| 11 | 83.52 miles (134.41 km) NE | Quad City International Airport (MLI) | Moline, Illinois, United States | |
| 12 | 90.74 miles (146.04 km) NNE | Davenport Municipal Airport (DVN) | Davenport, Iowa, United States | |
| 13 | 92.17 miles (148.33 km) E | General Wayne A. Downing Peoria International Airport (PIA) | Peoria, Illinois, United States | |
| 14 | 99.52 miles (160.17 km) N | The Eastern Iowa Airport (CID) | Cedar Rapids, Iowa, United States | |
| 15 | 101.77 miles (163.78 km) ESE | Abraham Lincoln Capital Airport (SPI) | Springfield, Illinois, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,915.27 miles (17,566.37 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,892.52 miles (17,529.77 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 10,870.69 miles (17,494.64 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 10,868.89 miles (17,491.75 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 10,832.23 miles (17,432.74 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 10,817.73 miles (17,409.40 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 10,808.09 miles (17,393.89 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 8 | 10,801.74 miles (17,383.67 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 9 | 10,796.66 miles (17,375.49 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 10 | 10,775.51 miles (17,341.46 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 11 | 10,755.62 miles (17,309.45 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 10,731.86 miles (17,271.21 km) WSW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 13 | 10,706.37 miles (17,230.19 km) WSW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,702.70 miles (17,224.29 km) WSW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 10,685.19 miles (17,196.10 km) WSW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| 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 | |