Nonstop flight route between Fort Sill, Oklahoma, United States and Gillam, Manitoba, Canada:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(56°21'28"N by 94°42'38"W)
Distance from FSI to YGX:
1,509.97 miles (2,430.05 km)
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Jump to:
- About this route
- FSI Airport Information
- YGX Airport Information
- Facts about FSI
- Facts about YGX
- 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 YGX
- List of Nearest Airports to YGX
- Map of Furthest Airports from YGX
- List of Furthest Airports from YGX
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Gillam Airport (YGX), Gillam, Manitoba, Canada would travel a Great Circle distance of 1,510 miles (or 2,430 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 Gillam 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: | YGX / CYGX |
| Airport Name: | Gillam Airport |
| Location: | Gillam, Manitoba, Canada |
| GPS Coordinates: | 56°21'28"N by 94°42'38"W |
| Operator/Owner: | Town of Gillam |
| Airport Type: | Public |
| Elevation: | 476 feet (145 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from YGX |
| More Information: | YGX Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
- 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.
- 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 Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- 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.
Facts about Gillam Airport (YGX):
- Because of Gillam Airport's relatively low elevation of 476 feet, planes can take off or land at Gillam 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 Gillam Airport (YGX) is Margaret River Airport (MGV), which is located 10,344 miles (16,648 kilometers) away in Margaret River, Western Australia, Australia.
- Gillam Airport (YGX) currently has only 1 runway.
- The closest airport to Gillam Airport (YGX) is Ilford Airport (ILF), which is located 41 miles (66 kilometers) WSW of YGX.
| 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 | 40.78 miles (65.63 km) WSW | Ilford Airport (ILF) | Ilford, Manitoba, Canada | |
| 2 | 56.10 miles (90.28 km) WSW | York Landing Airport (ZAC) | York Landing, Manitoba, Canada | |
| 3 | 72.49 miles (116.65 km) WSW | Kelsey Airport (KES) | Kelsey, Manitoba, Canada | |
| 4 | 99.73 miles (160.49 km) S | Knee Lake Airport (YKE) | Knee Lake, Manitoba, Canada | |
| 5 | 100.90 miles (162.38 km) SSW | Oxford House Airport (YOH) | Oxford House, Manitoba, Canada | |
| 6 | 106.91 miles (172.05 km) ESE | Shamattawa Airport (ZTM) | Shamattawa, Manitoba, Canada | |
| 7 | 107.75 miles (173.41 km) SSE | Gods River Airport (ZGI) | Gods River, Manitoba, Canada | |
| 8 | 124.59 miles (200.50 km) S | Gods Lake Narrows Airport (YGO) | Gods Lake Narrows, Manitoba, Canada | |
| 9 | 127.37 miles (204.98 km) WSW | Thompson Municipal Airport (YTH) | Thompson, Manitoba, Canada | |
| 10 | 136.63 miles (219.88 km) WSW | Thicket Portage Airport (YTD) | Thicket Portage, Manitoba, Canada | |
| 11 | 157.99 miles (254.26 km) SSE | Red Sucker Lake Airport (YRS) | Red Sucker Lake, Manitoba, Canada | |
| 12 | 162.49 miles (261.50 km) WNW | South Indian Lake Airport (XSI) | South Indian Lake, Manitoba, Canada | |
| 13 | 166.26 miles (267.57 km) N | Churchill Airport (YYQ) | Churchill, Manitoba, Canada | |
| 14 | 169.73 miles (273.16 km) SW | Cross Lake (Charlie Sinclair Memorial) Airport (YCR) | Cross Lake, Manitoba, Canada | |
| 15 | 172.79 miles (278.07 km) S | Island Lake Airport (YIV) | Island Lake, Manitoba, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,344.36 miles (16,647.59 km) SW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 10,330.73 miles (16,625.66 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 3 | 10,320.89 miles (16,609.82 km) SW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 4 | 10,314.91 miles (16,600.20 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 5 | 10,294.30 miles (16,567.02 km) SW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 6 | 10,249.58 miles (16,495.06 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 7 | 10,218.48 miles (16,445.01 km) SW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 8 | 10,213.27 miles (16,436.62 km) SW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 9 | 10,201.39 miles (16,417.51 km) SW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 10 | 10,132.12 miles (16,306.02 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 10,109.66 miles (16,269.87 km) WSW | Esperance Airport (EPR) | Esperance, Australia | |
| 12 | 10,051.58 miles (16,176.41 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 13 | 10,037.20 miles (16,153.27 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 14 | 10,008.38 miles (16,106.88 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 9,997.18 miles (16,088.85 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |