Nonstop flight route between Fort Sill, Oklahoma, United States and Smithers, British Columbia, Canada:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(54°49'31"N by 127°10'58"W)
Distance from FSI to YYD:
1,958.50 miles (3,151.89 km)
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- About this route
- FSI Airport Information
- YYD Airport Information
- Facts about FSI
- Facts about YYD
- 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 YYD
- List of Nearest Airports to YYD
- Map of Furthest Airports from YYD
- List of Furthest Airports from YYD
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Smithers Regional Airport (YYD), Smithers, British Columbia, Canada would travel a Great Circle distance of 1,958 miles (or 3,152 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 Smithers 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: | YYD / CYYD |
| Airport Name: | Smithers Regional Airport |
| Location: | Smithers, British Columbia, Canada |
| GPS Coordinates: | 54°49'31"N by 127°10'58"W |
| Area Served: | Smithers, Bulkley Valley |
| Operator/Owner: | Town of Smithers |
| Airport Type: | Public |
| Elevation: | 1716 feet (523 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from YYD |
| More Information: | YYD Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- 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
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- 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.
- Post Field served as a base for flight training for the Air Service.
- 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.
Facts about Smithers Regional Airport (YYD):
- The closest airport to Smithers Regional Airport (YYD) is Burns Lake Airport (YPZ), which is located 58 miles (94 kilometers) ESE of YYD.
- The furthest airport from Smithers Regional Airport (YYD) is Port Alfred Airport (AFD), which is located 10,507 miles (16,909 kilometers) away in Port Alfred, South Africa.
- Smithers Regional Airport (YYD) currently has only 1 runway.
- NavCanada operates a Flight Service Station at Smithers Airport.
| 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 | 58.23 miles (93.71 km) ESE | Burns Lake Airport (YPZ) | Burns Lake, British Columbia, Canada | |
| 2 | 60.99 miles (98.15 km) WSW | Northwest Regional Airport Terrace-Kitimat (YXT) | Terrace, British Columbia and Kitimat, British Columbia, Canada | |
| 3 | 128.34 miles (206.55 km) SW | Hartley Bay Water Aerodrome (YTB) | Hartley Bay, British Columbia, Canada | |
| 4 | 128.71 miles (207.14 km) WSW | Prince Rupert/Seal Cove Water Airport (ZSW) | Prince Rupert, British Columbia, Canada | |
| 5 | 133.57 miles (214.96 km) NW | Hyder Seaplane Base (WHD) | Hyder, Alaska, United States | |
| 6 | 133.93 miles (215.53 km) NW | Stewart Aerodrome (ZST) | Stewart, British Columbia, Canada | |
| 7 | 135.90 miles (218.70 km) WSW | Prince Rupert Airport (YPR) | Prince Rupert, British Columbia, Canada | |
| 8 | 148.91 miles (239.65 km) WSW | Kitkatla Water Aerodrome (YKK) | Kitkatla, British Columbia, Canada | |
| 9 | 170.14 miles (273.82 km) S | Bella Coola Airport (QBC) | Bella Coola, British Columbia, Canada | |
| 10 | 171.26 miles (275.61 km) S | Ocean Falls Water Aerodrome (ZOF) | Ocean Falls, British Columbia, Canada | |
| 11 | 174.86 miles (281.40 km) W | Annette Island Airport (ANN) | Annette Island, Alaska, United States | |
| 12 | 175.53 miles (282.48 km) W | Metlakatla Seaplane Base (MTM) | Metlakatla, Annette Island, Alaska, United States | |
| 13 | 180.75 miles (290.89 km) WNW | Ketchikan Harbor Seaplane Base (WFB) | Ketchikan, Alaska, United States | |
| 14 | 181.17 miles (291.56 km) SSE | Anahim Lake Airport (YAA) | Anahim Lake, British Columbia, Canada | |
| 15 | 182.71 miles (294.05 km) WNW | Ketchikan International Airport (KTN) | Ketchikan, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,506.99 miles (16,909.32 km) SE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 2 | 10,505.29 miles (16,906.59 km) SE | East London Airport (ELS) | East London, South Africa | |
| 3 | 10,491.90 miles (16,885.04 km) SE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,446.28 miles (16,811.62 km) SE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 5 | 10,441.54 miles (16,803.99 km) SE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 6 | 10,389.62 miles (16,720.43 km) SE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 7 | 10,386.88 miles (16,716.02 km) ESE | George Airport (GRJ) | George, South Africa | |
| 8 | 10,372.89 miles (16,693.51 km) SE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 9 | 10,359.53 miles (16,672.01 km) SE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 10 | 10,357.06 miles (16,668.03 km) S | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 11 | 10,340.46 miles (16,641.31 km) SE | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 12 | 10,323.82 miles (16,614.54 km) SE | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 13 | 10,320.48 miles (16,609.16 km) SE | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 14 | 10,317.65 miles (16,604.61 km) SE | Hluhluwe Airport (HLW) | Hluhluwe, South Africa | |
| 15 | 10,314.65 miles (16,599.77 km) SSE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |