Nonstop flight route between Fort Sill, Oklahoma, United States and Santa Maria, Rio Grande do Sul, Brazil:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(29°42'38"S by 53°41'31"W)
Distance from FSI to RIA:
5,315.98 miles (8,555.22 km)
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- About this route
- FSI Airport Information
- RIA Airport Information
- Facts about FSI
- Facts about RIA
- 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 RIA
- List of Nearest Airports to RIA
- Map of Furthest Airports from RIA
- List of Furthest Airports from RIA
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Santa Maria Airport (RIA), Santa Maria, Rio Grande do Sul, Brazil would travel a Great Circle distance of 5,316 miles (or 8,555 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 large distance between Henry Post Army Airfield and Santa Maria Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and Santa Maria Airport. You'll see that it will travel the same route of the red line on this map!
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: | RIA / SBSM |
| Airport Names: |
|
| Location: | Santa Maria, Rio Grande do Sul, Brazil |
| GPS Coordinates: | 29°42'38"S by 53°41'31"W |
| Area Served: | Santa Maria |
| Operator/Owner: | Brazilian Air Force |
| Airport Type: | Public/Military |
| Elevation: | 289 feet (88 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from RIA |
| More Information: | RIA 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Post Field served as a base for flight training for the Air Service.
- The field was named in honor of pioneer aviator 2d Lieutenant Henry Post.
Facts about Santa Maria Airport (RIA):
- The furthest airport from Santa Maria Airport (RIA) is Aguni Airport (AGJ), which is nearly antipodal to Santa Maria Airport (meaning Santa Maria Airport is almost on the exact opposite side of the Earth from Aguni Airport), and is located 12,214 miles (19,656 kilometers) away in Aguni, Japan.
- In 1944 the President of Brazil Getúlio Vargas allocated an area of 4 million square meters near Santa Maria with the purpose of building an aerodrome.
- Santa Maria Airport (RIA) has 2 runways.
- Since 1971, with the creation of the Santa Maria Air Force Base, civil and military facilities are shared.
- In addition to being known as "Santa Maria Airport", another name for RIA is "Aeroporto de Santa Maria".
- The closest airport to Santa Maria Airport (RIA) is João Batista Bos Filho Airport (IJU), which is located 93 miles (150 kilometers) N of RIA.
- Because of Santa Maria Airport's relatively low elevation of 289 feet, planes can take off or land at Santa Maria 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.
| 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 | 93.10 miles (149.84 km) N | João Batista Bos Filho Airport (IJU) | Ijuí, Rio Grande do Sul, Brazil | |
| 2 | 102.82 miles (165.48 km) NNW | Sepé Tiaraju Airport (GEL) | Santo Ângelo, Rio Grande do Sul, Brazil | |
| 3 | 118.70 miles (191.04 km) SSW | Comandante Gustavo Kraemer International Airport (BGX) | Bagé, Rio Grande do Sul, Brazil | |
| 4 | 130.56 miles (210.12 km) NE | Lauro Kurtz Airport (PFB) | Passo Fundo, Rio Grande do Sul, Brazil | |
| 5 | 132.14 miles (212.66 km) W | Gaudêncio Machado Ramos Airport (ALQ) | Alegrete, Rio Grande do Sul, Brazil | |
| 6 | 137.61 miles (221.46 km) SW | Pres. Gral. Óscar D. Gestido International Airport (RVY) | Rivera, Rivera, Uruguay | |
| 7 | 149.90 miles (241.24 km) SSW | Cerro Largo International Airport (VCH) | Vichadero, Rivera, Uruguay | |
| 8 | 152.34 miles (245.16 km) E | Salgado Filho International Airport (POA) | Porto Alegre, Rio Grande do Sul, Brazil | |
| 9 | 160.41 miles (258.16 km) SSE | Pelotas International Airport (PET) | Pelotas, Rio Grande do Sul, Brazil | |
| 10 | 165.66 miles (266.61 km) NNE | Erechim Airport (ERM) | Erechim, Rio Grande do Sul, Brazil | |
| 11 | 174.99 miles (281.62 km) WSW | Artigas International Airport (ATI) | Artigas, Artigas, Uruguay | |
| 12 | 184.51 miles (296.94 km) S | Cerro Largo International Airport (MLZ) | Melo, Cerro Largo, Uruguay | |
| 13 | 187.21 miles (301.28 km) SSE | Rio Grande Regional Airport (RIG) | Rio Grande, Brazil | |
| 14 | 188.73 miles (303.73 km) NNE | Serafin Enoss Bertaso Airport (XAP) | Chapecó, Brazil | |
| 15 | 193.46 miles (311.35 km) SW | Tacuarembó Airport (TAW) | Tacuarembó, Tacuarembó, Uruguay | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,214.00 miles (19,656.48 km) NNW | Aguni Airport (AGJ) | Aguni, Japan | |
| 2 | 12,212.99 miles (19,654.86 km) WNW | Amami Airport (ASJ) | Amami Island, Japan | |
| 3 | 12,211.55 miles (19,652.53 km) NNW | Iejima Airport (IEJ) | Iejima, Japan | |
| 4 | 12,199.80 miles (19,633.62 km) E | Zhoushan Putuoshan Airport (HSN) | Zhoushan, Zhejiang, China | |
| 5 | 12,197.94 miles (19,630.63 km) WNW | Kikai Airport (KKX) | Kikaiga Shima, Kikai-Shima Island, Japan | |
| 6 | 12,188.18 miles (19,614.93 km) NNW | Kadena Air Base 嘉手納飛行場 Kadena Hikōjō (DNA) | Okinawa Prefecture, Japan | |
| 7 | 12,184.76 miles (19,609.41 km) NNW | Kerama Airport (KJP) | Kerama Islands, Okinawa, Japan | |
| 8 | 12,183.89 miles (19,608.02 km) NW | Fukue Airport (FUJ) | Gotō, Nagasaki, Japan | |
| 9 | 12,181.00 miles (19,603.37 km) N | Jeongseok / Jungseok Airport (JDG) | Jeju province, South Korea | |
| 10 | 12,180.58 miles (19,602.70 km) NNW | Naha Airport (OKA) | Okinawa, Japan | |
| 11 | 12,173.98 miles (19,592.07 km) N | Jeju International Airport (CJU) | Jeju, South Korea | |
| 12 | 12,172.43 miles (19,589.58 km) W | Yakushima Airport (KUM) | Yakushima, Kagoshima Prefecture, Japan | |
| 13 | 12,150.90 miles (19,554.94 km) ENE | Shanghai Pudong International Airport (PVG) | Shanghai, People's Republic of China | |
| 14 | 12,146.08 miles (19,547.17 km) E | Ningbo Lishe International Airport (NGB) | Ningbo, Zhejiang, China | |
| 15 | 12,137.78 miles (19,533.81 km) WNW | Kagoshima Airport (KOJ) | Kagoshima, Japan | |