Nonstop flight route between Fort Sill, Oklahoma, United States and Pierre, South Dakota, United States:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(44°22'58"N by 100°17'9"W)
Distance from FSI to PIR:
679.89 miles (1,094.17 km)
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Jump to:
- About this route
- FSI Airport Information
- PIR Airport Information
- Facts about FSI
- Facts about PIR
- 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 PIR
- List of Nearest Airports to PIR
- Map of Furthest Airports from PIR
- List of Furthest Airports from PIR
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Pierre Regional Airport (PIR), Pierre, South Dakota, United States would travel a Great Circle distance of 680 miles (or 1,094 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 Pierre Regional 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: | PIR / KPIR |
| Airport Names: |
|
| Location: | Pierre, South Dakota, United States |
| GPS Coordinates: | 44°22'58"N by 100°17'9"W |
| Area Served: | Pierre, South Dakota |
| Operator/Owner: | City of Pierre |
| Airport Type: | Public |
| Elevation: | 1744 feet (532 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from PIR |
| More Information: | PIR Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Post Field served as a base for flight training for the Air Service.
- 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.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
Facts about Pierre Regional Airport (PIR):
- The closest airport to Pierre Regional Airport (PIR) is Mobridge Municipal Airport (MBG), which is located 81 miles (130 kilometers) N of PIR.
- In addition to being known as "Pierre Regional Airport", another name for PIR is "Pierre Army Airfield".
- Pierre Regional Airport (PIR) has 2 runways.
- The furthest airport from Pierre Regional Airport (PIR) is Sir Gaëtan Duval Airport (RRG), which is located 10,493 miles (16,887 kilometers) away in Rodrigues Island, Mauritius.
- During World War II the airfield was used by the United States Army Air Forces by Air Technical Service Command as a maintenance and supply depot.
| 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 | 80.61 miles (129.73 km) N | Mobridge Municipal Airport (MBG) | Mobridge, South Dakota, United States | |
| 2 | 101.59 miles (163.50 km) E | Huron Regional Airport (HON) | Huron, South Dakota, United States | |
| 3 | 106.26 miles (171.01 km) S | Miller Field (VTN) | Valentine, Nebraska, United States | |
| 4 | 117.18 miles (188.58 km) NE | Aberdeen Regional AirportAberdeen Army Airfield (ABR) | Aberdeen, South Dakota, United States | |
| 5 | 119.20 miles (191.83 km) ESE | Mitchell Municipal Airport (MHE) | Mitchell, South Dakota, United States | |
| 6 | 122.23 miles (196.70 km) NNE | Ashley Municipal Airport (ASY) | Ashley, North Dakota, United States | |
| 7 | 125.48 miles (201.94 km) S | Ainsworth Regional Airport (ANW) | Ainsworth, Nebraska, United States | |
| 8 | 138.94 miles (223.59 km) W | Ellsworth Air Force Base (RCA) | Rapid City, South Dakota, United States | |
| 9 | 139.19 miles (224.01 km) W | Rapid City Regional Airport (RAP) | Rapid City, South Dakota, United States | |
| 10 | 145.54 miles (234.23 km) SW | Pine Ridge Airport (XPR) | Pine Ridge, South Dakota, United States | |
| 11 | 154.63 miles (248.86 km) SSE | O'Neill Municipal Airport (ONL) | O'Neill, Nebraska, United States | |
| 12 | 158.23 miles (254.64 km) ENE | Watertown Regional Airport (ATY) | Watertown, South Dakota, United States | |
| 13 | 158.67 miles (255.35 km) NE | Britton Municipal Airport (TTO) | Britton, South Dakota, United States | |
| 14 | 160.53 miles (258.35 km) E | Madison Municipal Airport (XMD) | Madison, South Dakota, United States | |
| 15 | 166.62 miles (268.15 km) N | Bismarck Municipal Airport (BIS) | Bismarck, North Dakota, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,492.88 miles (16,886.61 km) SE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,426.91 miles (16,780.44 km) W | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 3 | 10,403.42 miles (16,742.63 km) W | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 4 | 10,388.07 miles (16,717.94 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 5 | 10,378.56 miles (16,702.63 km) W | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 6 | 10,355.72 miles (16,665.88 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 7 | 10,333.12 miles (16,629.50 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 10,329.76 miles (16,624.10 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 9 | 10,325.79 miles (16,617.70 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 10 | 10,320.12 miles (16,608.59 km) W | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 11 | 10,309.86 miles (16,592.06 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 12 | 10,304.74 miles (16,583.83 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 13 | 10,293.59 miles (16,565.89 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 14 | 10,287.90 miles (16,556.72 km) WSW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 15 | 10,240.43 miles (16,480.34 km) WSW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |