Nonstop flight route between Fort Sill, Oklahoma, United States and Rocky Mountain House, Alberta, Canada:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(52°25'46"N by 114°54'15"W)
Distance from FSI to YRM:
1,472.95 miles (2,370.48 km)
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Jump to:
- About this route
- FSI Airport Information
- YRM Airport Information
- Facts about FSI
- Facts about YRM
- 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 YRM
- List of Nearest Airports to YRM
- Map of Furthest Airports from YRM
- List of Furthest Airports from YRM
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Rocky Mountain House Airport (YRM), Rocky Mountain House, Alberta, Canada would travel a Great Circle distance of 1,473 miles (or 2,370 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 Rocky Mountain House 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: | YRM / CYRM |
| Airport Name: | Rocky Mountain House Airport |
| Location: | Rocky Mountain House, Alberta, Canada |
| GPS Coordinates: | 52°25'46"N by 114°54'15"W |
| Operator/Owner: | Town of Rocky Mountain House |
| Airport Type: | Public |
| Elevation: | 3244 feet (989 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from YRM |
| More Information: | YRM Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- 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.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- 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 AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- As a result of the United State's entry into World War I, Fort Sill was selected for a primary pilot school.
- 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.
Facts about Rocky Mountain House Airport (YRM):
- Rocky Mountain House Airport (YRM) currently has only 1 runway.
- The closest airport to Rocky Mountain House Airport (YRM) is Red Deer Regional Airport (YQF), which is located 46 miles (74 kilometers) ESE of YRM.
- The furthest airport from Rocky Mountain House Airport (YRM) is Tôlanaro Airport (FTU), which is located 10,320 miles (16,609 kilometers) away in Tôlanaro, Madagascar.
| 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 | 45.96 miles (73.96 km) ESE | Red Deer Regional Airport (YQF) | Red Deer, Alberta, Canada | |
| 2 | 57.82 miles (93.05 km) N | Drayton Valley Industrial Airport (YDC) | Drayton Valley, Alberta, Canada | |
| 3 | 82.17 miles (132.23 km) NE | Edmonton International Airport (YEG) | Edmonton, Alberta, Canada | |
| 4 | 88.65 miles (142.68 km) SSW | Banff Airport (YBA) | Banff, Alberta, Canada | |
| 5 | 93.40 miles (150.31 km) NW | High Prairie Airport (ZHP) | High Prairie, Alberta, Canada | |
| 6 | 98.02 miles (157.75 km) SSE | Calgary International Airport (YYC) | Calgary, Alberta, Canada | |
| 7 | 102.54 miles (165.02 km) NW | Edson Airport (YET) | Edson, Alberta, Canada | |
| 8 | 104.11 miles (167.54 km) NNE | CFB Edmonton (YED) | Edmonton, Alberta, Canada | |
| 9 | 123.92 miles (199.43 km) NNW | Whitecourt Airport (YZU) | Whitecourt, Alberta, Canada | |
| 10 | 133.76 miles (215.26 km) WNW | Hinton/Jasper-Hinton Airport (YJP) | Hinton, Alberta, Canada | |
| 11 | 137.74 miles (221.68 km) WNW | Jasper Airport (YJA) | Jasper, Alberta, Canada | |
| 12 | 148.33 miles (238.71 km) E | Coronation Airport (YCT) | Coronation, Alberta, Canada | |
| 13 | 150.95 miles (242.94 km) SSW | Fairmont Hot Springs Airport (YCZ) | Fairmont Hot Springs, British Columbia, Canada | |
| 14 | 171.62 miles (276.20 km) E | Wainwright Aerodrome (YWV) | Wainwright, Alberta, Canada | |
| 15 | 172.05 miles (276.89 km) E | Vermilion Airport (YVG) | Vermilion, Alberta, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,320.08 miles (16,608.52 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,244.44 miles (16,486.78 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 10,226.38 miles (16,457.72 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,198.22 miles (16,412.41 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,190.41 miles (16,399.84 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 10,177.44 miles (16,378.96 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 7 | 10,157.99 miles (16,347.65 km) ESE | East London Airport (ELS) | East London, South Africa | |
| 8 | 10,146.94 miles (16,329.87 km) ESE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 9 | 10,141.72 miles (16,321.47 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 10 | 10,117.59 miles (16,282.64 km) ESE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 11 | 10,114.51 miles (16,277.68 km) ESE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 12 | 10,103.10 miles (16,259.32 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 13 | 10,101.76 miles (16,257.16 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 14 | 10,091.23 miles (16,240.22 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 15 | 10,090.70 miles (16,239.36 km) ESE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |