Nonstop flight route between Fort Sill, Oklahoma, United States and Choibalsan, Mongolia:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(48°8'8"N by 114°38'45"E)
Distance from FSI to COQ:
6,363.97 miles (10,241.80 km)
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Jump to:
- About this route
- FSI Airport Information
- COQ Airport Information
- Facts about FSI
- Facts about COQ
- 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 COQ
- List of Nearest Airports to COQ
- Map of Furthest Airports from COQ
- List of Furthest Airports from COQ
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Choibalsan Airport (COQ), Choibalsan, Mongolia would travel a Great Circle distance of 6,364 miles (or 10,242 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 Choibalsan 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 Choibalsan 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: | COQ / ZMCD |
| Airport Name: | Choibalsan Airport |
| Location: | Choibalsan, Mongolia |
| GPS Coordinates: | 48°8'8"N by 114°38'45"E |
| Area Served: | Choibalsan, Mongolia |
| Operator/Owner: | Civil Aviation Authority of Mongolia |
| Airport Type: | Public / Military |
| Elevation: | 2457 feet (749 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from COQ |
| More Information: | COQ Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- 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.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- With the end of World War I, in October 1919 Post Field was deactivated as an active duty airfield in accordance with sharply reduced military budgets, and a small caretaker unit was assigned to the facility for administrative reasons to support the balloon school/company.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- There are no air units currently stationed at the airfield, however air operations for transient units are provided by permanent party personnel.
- By the late 1920s, the World War I tarpaper buildings were rotting and turning into fire hazards.
Facts about Choibalsan Airport (COQ):
- The closest airport to Choibalsan Airport (COQ) is Hulunbuir Hailar Airport (HLD), which is located 248 miles (398 kilometers) ENE of COQ.
- Choibalsan Airport (COQ) currently has only 1 runway.
- The furthest airport from Choibalsan Airport (COQ) is Puerto Deseado Airport (PUD), which is nearly antipodal to Choibalsan Airport (meaning Choibalsan Airport is almost on the exact opposite side of the Earth from Puerto Deseado Airport), and is located 12,399 miles (19,955 kilometers) away in Puerto Deseado, Santa Cruz Province, Argentina.
- Choibalsan Airport handled 6,200 passengers last year.
| 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 | 247.53 miles (398.36 km) ENE | Hulunbuir Hailar Airport (HLD) | Hailar, Inner Mongolia, China | |
| 2 | 251.25 miles (404.35 km) E | Arxan Yi'ershi Airport (YIE) | Arxan, Inner Mongolia, China | |
| 3 | 275.33 miles (443.11 km) NNW | Chita Kadala (HTA) | Chita, Russia | |
| 4 | 298.26 miles (480.00 km) SSE | Xilinhot Airport (XIL) | Xilinhot, Inner Mongolia, China | |
| 5 | 347.69 miles (559.55 km) SSW | Erenhot Saiwusu International Airport (ERL) | Erenhot, Inner Mongolia, China | |
| 6 | 364.77 miles (587.05 km) W | Chinggis Khaan International Airport (ULN) | Ulan Bator, Mongolia | |
| 7 | 370.73 miles (596.63 km) ESE | Ulanhot Airport (HLH) | Ulanhot, China | |
| 8 | 408.32 miles (657.12 km) NW | Baikal International Airport (UUD) | Ulan-Ude, Republic of Buryatia, Russia | |
| 9 | 426.75 miles (686.79 km) WSW | Mandalgovi Airport (MXW) | Mandalgovi, Dundgovi, Mongolia | |
| 10 | 457.31 miles (735.96 km) SSE | Chifeng Airport (CIF) | Chifeng, Inner Mongolia, China | |
| 11 | 474.82 miles (764.15 km) NE | Mohe Gulian Airport (OHE) | Mohe, Heilongjiang, China | |
| 12 | 506.25 miles (814.73 km) E | Daqing Sartu Airport (DQA) | Daqing, Heilongjiang, China | |
| 13 | 511.27 miles (822.81 km) S | Zhangjiakou Ningyuan Airport (ZQZ) | Zhangjiakou, Hebei Province, China | |
| 14 | 513.01 miles (825.61 km) W | Bulgan Airport (UGA) | Bulgan, Mongolia | |
| 15 | 522.05 miles (840.16 km) SSW | Hohhot Baita International Airport (HET) | Hohhot, Inner Mongolia, China | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,399.21 miles (19,954.55 km) SE | Puerto Deseado Airport (PUD) | Puerto Deseado, Santa Cruz Province, Argentina | |
| 2 | 12,246.33 miles (19,708.50 km) SSE | General Enrique Mosconi International Airport (CRD) | Comodoro Rivadavia, Chubut, Argentina | |
| 3 | 12,212.62 miles (19,654.25 km) ESE | Gobernador Gregores Airport (GGS) | Gobernador Gregores, Santa Cruz, Argentina | |
| 4 | 12,151.32 miles (19,555.61 km) ESE | Perito Moreno Airport (PMQ) | Perito Moreno, Santa Cruz, Argentina | |
| 5 | 12,139.14 miles (19,536.00 km) SE | Piloto Civil Norberto Fernández International Airport (RGL) | Río Gallegos, Santa Cruz, Argentina | |
| 6 | 12,121.70 miles (19,507.93 km) ESE | Chile Chico Airfield (CCH) | Chile Chico, Aisén Region, Chile | |
| 7 | 12,101.45 miles (19,475.35 km) ESE | Balmaceda Airport (BBA) | Balmaceda, Chile | |
| 8 | 12,100.21 miles (19,473.35 km) ESE | Comandante Armando Tola International Airport (FTE) | El Calafate, Santa Cruz Province, Argentina | |
| 9 | 12,099.66 miles (19,472.47 km) SE | Alto Río Senguer Airport (ARR) | Alto Río Senguer, Chubut, Argentina | |
| 10 | 12,096.44 miles (19,467.29 km) S | Almirante Marcos A. Zar Airport (REL) | Trelew, Chubut, Argentina | |
| 11 | 12,094.89 miles (19,464.80 km) E | Cochrane Airfield (LGR) | Cochrane, Chile | |
| 12 | 12,088.75 miles (19,454.92 km) ESE | Lago Argentino Airport (ING) | El Calafate, Santa Cruz, Argentina | |
| 13 | 12,072.87 miles (19,429.36 km) ESE | Teniente Vidal Airfield (GXQ) | Coyhaique, Chile | |
| 14 | 12,065.08 miles (19,416.82 km) S | El Tehuelche Airport (PMY) | Puerto Madryn, Argentina | |
| 15 | 12,038.25 miles (19,373.64 km) SW | RAF Mount Pleasant (MPN) | Falkland Islands | |