Nonstop flight route between Fort Sill, Oklahoma, United States and Slave Lake, Alberta, Canada:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(55°17'35"N by 114°46'37"W)
Distance from FSI to YZH:
1,626.34 miles (2,617.33 km)
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Jump to:
- About this route
- FSI Airport Information
- YZH Airport Information
- Facts about FSI
- Facts about YZH
- 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 YZH
- List of Nearest Airports to YZH
- Map of Furthest Airports from YZH
- List of Furthest Airports from YZH
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Slave Lake Airport (YZH), Slave Lake, Alberta, Canada would travel a Great Circle distance of 1,626 miles (or 2,617 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 Slave Lake 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: | YZH / CYZH |
| Airport Name: | Slave Lake Airport |
| Location: | Slave Lake, Alberta, Canada |
| GPS Coordinates: | 55°17'35"N by 114°46'37"W |
| Operator/Owner: | Slave Lake Airport Services Commission |
| Airport Type: | Public |
| Elevation: | 1912 feet (583 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from YZH |
| More Information: | YZH Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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 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 Fort Sill Army Radar Approach Control is the Army's Second busiest Air Traffic Control Facility, providing Radar Approach Control service to Henry Post Army Air Field, Lawton/Fort Sill Regional Airport, Duncan/Haliburton Airport and many smaller airports in the area.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
Facts about Slave Lake Airport (YZH):
- The furthest airport from Slave Lake Airport (YZH) is Tôlanaro Airport (FTU), which is located 10,150 miles (16,335 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to Slave Lake Airport (YZH) is Whitecourt Airport (YZU), which is located 89 miles (143 kilometers) SSW of YZH.
- Slave Lake Airport (YZH) currently has only 1 runway.
| 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 | 89.03 miles (143.28 km) SSW | Whitecourt Airport (YZU) | Whitecourt, Alberta, Canada | |
| 2 | 95.11 miles (153.06 km) WNW | Donnelly Airport (YOE) | Donnelly, Alberta, Canada | |
| 3 | 114.56 miles (184.36 km) ESE | Lac La Biche Airport (YLB) | Lac La Biche, Alberta, Canada | |
| 4 | 122.25 miles (196.75 km) WNW | Peace River Airport (YPE) | Peace River, Alberta, Canada | |
| 5 | 123.17 miles (198.21 km) SSE | CFB Edmonton (YED) | Edmonton, Alberta, Canada | |
| 6 | 136.47 miles (219.63 km) SSW | Edson Airport (YET) | Edson, Alberta, Canada | |
| 7 | 140.26 miles (225.73 km) S | Drayton Valley Industrial Airport (YDC) | Drayton Valley, Alberta, Canada | |
| 8 | 145.27 miles (233.79 km) SSE | Edmonton International Airport (YEG) | Edmonton, Alberta, Canada | |
| 9 | 147.99 miles (238.17 km) SSW | High Prairie Airport (ZHP) | High Prairie, Alberta, Canada | |
| 10 | 152.44 miles (245.33 km) WNW | Fairview Airport (ZFW) | Fairview, Alberta, Canada | |
| 11 | 161.99 miles (260.69 km) W | Grande Prairie Airport (YQU) | Grande Prairie, Alberta, Canada | |
| 12 | 162.86 miles (262.09 km) ESE | St. Paul Aerodrome (ZSP) | St. Paul, Alberta, Canada | |
| 13 | 166.44 miles (267.86 km) NE | Fort McMurray International Airport (YMM) | Fort McMurray, Alberta, Canada | |
| 14 | 174.62 miles (281.03 km) ESE | Bonnyville Airport (YBY) | Bonnyville, Alberta, Canada | |
| 15 | 181.61 miles (292.27 km) SW | Hinton/Jasper-Hinton Airport (YJP) | Hinton, Alberta, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,150.36 miles (16,335.38 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,080.81 miles (16,223.45 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 10,075.69 miles (16,215.21 km) ESE | East London Airport (ELS) | East London, South Africa | |
| 4 | 10,069.98 miles (16,206.02 km) ESE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,046.80 miles (16,168.72 km) ESE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 6 | 10,042.68 miles (16,162.09 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 7 | 10,035.35 miles (16,150.29 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 8 | 10,023.84 miles (16,131.76 km) ESE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 9 | 10,006.93 miles (16,104.56 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 10 | 9,997.39 miles (16,089.20 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 11 | 9,996.23 miles (16,087.33 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 12 | 9,979.60 miles (16,060.57 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 13 | 9,978.87 miles (16,059.39 km) SE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 14 | 9,975.43 miles (16,053.86 km) ESE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 15 | 9,941.85 miles (15,999.82 km) SE | Hluhluwe Airport (HLW) | Hluhluwe, South Africa | |