Nonstop flight route between Fort Sill, Oklahoma, United States and Alamosa, Colorado, United States:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(37°26'6"N by 105°51'59"W)
Distance from FSI to ALS:
459.08 miles (738.82 km)
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Jump to:
- About this route
- FSI Airport Information
- ALS Airport Information
- Facts about FSI
- Facts about ALS
- 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 ALS
- List of Nearest Airports to ALS
- Map of Furthest Airports from ALS
- List of Furthest Airports from ALS
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and San Luis Valley Regional Airport (ALS), Alamosa, Colorado, United States would travel a Great Circle distance of 459 miles (or 739 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 San Luis Valley 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: | ALS / KALS |
| Airport Names: |
|
| Location: | Alamosa, Colorado, United States |
| GPS Coordinates: | 37°26'6"N by 105°51'59"W |
| Area Served: | Alamosa, Colorado |
| Operator/Owner: | City and County of Alamosa |
| Airport Type: | Public |
| Elevation: | 7539 feet (2,298 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ALS |
| More Information: | ALS Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
- 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.
- 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.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
Facts about San Luis Valley Regional Airport (ALS):
- San Luis Valley Regional Airport (ALS) has 2 runways.
- The furthest airport from San Luis Valley Regional Airport (ALS) is Sir Gaëtan Duval Airport (RRG), which is located 11,054 miles (17,790 kilometers) away in Rodrigues Island, Mauritius.
- Because of San Luis Valley Regional Airport's high elevation of 7,539 feet, planes must typically fly at a faster airspeed in order to takeoff or land at ALS. Combined with a high temperature, this could make ALS a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The closest airport to San Luis Valley Regional Airport (ALS) is Stevens Field (FAA: PSO) (PGO), which is located 66 miles (106 kilometers) W of ALS.
- In addition to being known as "San Luis Valley Regional Airport", another name for ALS is "Bergman Field".
| 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 | 66.06 miles (106.31 km) W | Stevens Field (FAA: PSO) (PGO) | Pagosa Springs, Colorado, United States | |
| 2 | 68.34 miles (109.99 km) S | Taos Regional Airport (TSM) | Taos, New Mexico, United States | |
| 3 | 76.88 miles (123.72 km) N | Harriet Alexander Field (SLT) | Salida, Colorado, United States | |
| 4 | 84.68 miles (136.27 km) E | Perry Stokes Airport (TAD) | Trinidad, Colorado, United States | |
| 5 | 89.15 miles (143.47 km) ESE | Raton Municipal Airport (RTN) | Raton, New Mexico, United States | |
| 6 | 95.22 miles (153.25 km) NE | Pueblo Memorial Airport (PUB) | Pueblo, Colorado, United States | |
| 7 | 95.60 miles (153.85 km) NW | Gunnison-Crested Butte Regional Airport (GUC) | Gunnison, Colorado, United States | |
| 8 | 97.85 miles (157.47 km) S | Ohkay Owingeh Airport (ESO) | Española, New Mexico, United States | |
| 9 | 105.58 miles (169.92 km) W | Durango–La Plata County Airport (DRO) | Durango, Colorado, United States | |
| 10 | 109.75 miles (176.62 km) SSW | Los Alamos Airport (LAM) | Los Alamos, New Mexico, United States | |
| 11 | 111.21 miles (178.97 km) W | Animas Air Park (AMK) | Durango, Colorado, United States | |
| 12 | 113.95 miles (183.38 km) NNE | City of Colorado Springs Municipal Airport (COS) | Colorado Springs, Colorado, United States | |
| 13 | 117.26 miles (188.72 km) WNW | Telluride Regional Airport (TEX) | Telluride, Colorado, United States | |
| 14 | 120.59 miles (194.07 km) NNE | United States Air Force Academy (AFF) | Colorado Springs, Colorado, United States | |
| 15 | 125.74 miles (202.36 km) N | Lake County Airport (LXV) | Leadville, Colorado, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,053.98 miles (17,789.62 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,902.39 miles (17,545.65 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,859.12 miles (17,476.02 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,840.30 miles (17,445.72 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,626.52 miles (17,101.68 km) ESE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,532.16 miles (16,949.83 km) ESE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 10,498.33 miles (16,895.38 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 8 | 10,482.56 miles (16,870.00 km) ESE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,431.12 miles (16,787.21 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 10 | 10,398.10 miles (16,734.09 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| 11 | 10,377.06 miles (16,700.22 km) ESE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 12 | 10,342.64 miles (16,644.82 km) ESE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 13 | 10,318.93 miles (16,606.66 km) ESE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 14 | 10,316.24 miles (16,602.35 km) ESE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,309.35 miles (16,591.24 km) ESE | Morombe Airport (MXM) | Morombe, Madagascar | |