Nonstop flight route between Fort Sill, Oklahoma, United States and Chiang Rai, Thailand:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(19°57'7"N by 99°52'58"E)
Distance from FSI to CEI:
8,477.61 miles (13,643.35 km)
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Jump to:
- About this route
- FSI Airport Information
- CEI Airport Information
- Facts about FSI
- Facts about CEI
- 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 CEI
- List of Nearest Airports to CEI
- Map of Furthest Airports from CEI
- List of Furthest Airports from CEI
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Chiang Rai International Airport (CEI), Chiang Rai, Thailand would travel a Great Circle distance of 8,478 miles (or 13,643 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 Chiang Rai International 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 Chiang Rai International 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: | CEI / VTCT |
| Airport Names: |
|
| Location: | Chiang Rai, Thailand |
| GPS Coordinates: | 19°57'7"N by 99°52'58"E |
| Operator/Owner: | Airports of Thailand |
| Airport Type: | Public |
| Elevation: | 1280 feet (390 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from CEI |
| More Information: | CEI 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.
- 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.
- With the sudden end of World War I in November 1918, the future operational status of Post Field was unknown.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- Air Service/Corps units assigned to Post Field between 1919 and 1941
- Henry Post AAF has one runway designated 17/35 with a concrete surface measuring 5,001 by 200 feet.
Facts about Chiang Rai International Airport (CEI):
- Chiang Rai International Airport (CEI) currently has only 1 runway.
- The closest airport to Chiang Rai International Airport (CEI) is Tachilek Airport (THL), which is located 37 miles (59 kilometers) N of CEI.
- A new road which can be accessed by turning left upon exiting the airport also leads southbound to the city centre and is a less congested route, as it is not used by intercity buses heading north.
- The furthest airport from Chiang Rai International Airport (CEI) is Maria Reiche Neuman Airport (NZC), which is located 11,947 miles (19,227 kilometers) away in Nazca, Ica Region, Peru.
- In addition to being known as "Chiang Rai International Airport", another name for CEI is "ท่าอากาศยานแม่ฟ้าหลวง เชียงราย".
- Chiang Rai International Airport handled 1,053,863 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 | 36.87 miles (59.34 km) N | Tachilek Airport (THL) | Tachilek, Myanmar (Burma) | |
| 2 | 41.70 miles (67.10 km) ENE | Ban Huoeisay Airport (HOE) | Houeisay, Laos | |
| 3 | 94.59 miles (152.23 km) N | Kengtung Airport (KET) | Kengtung, Myanmar (Burma) | |
| 4 | 101.53 miles (163.40 km) SW | Chiang Mai International Airport (CNX) | Chiang Mai, Thailand | |
| 5 | 102.64 miles (165.18 km) WSW | Pai Airport (PYY) | Pai, Thailand | |
| 6 | 118.77 miles (191.13 km) SSW | Lampang Airport (LPT) | Lampang, Thailand | |
| 7 | 120.55 miles (194.01 km) NE | Louangnamtha Airport (LXG) | Luang Namtha, Laos | |
| 8 | 127.09 miles (204.54 km) S | Phrae Airport (PRH) | Phrae, Thailand | |
| 9 | 130.28 miles (209.67 km) ESE | Sayaboury Airport (ZBY) | Sayaboury, Laos | |
| 10 | 132.07 miles (212.55 km) WSW | Mae Hong Son Airport (HGN) | Mae Hong Son, Thailand | |
| 11 | 145.74 miles (234.54 km) ENE | Oudomsay Airport (ODY) | Muang Xay, Laos | |
| 12 | 148.02 miles (238.22 km) E | Luang Prabang International Airport (LPQ) | Luang Prabang, Laos | |
| 13 | 150.71 miles (242.54 km) NNE | Xishuangbanna Gasa International Airport (JHG) | Jinghong, Xishuangbanna, Yunnan, China | |
| 14 | 174.35 miles (280.60 km) W | Loikaw Airport (LIW) | Loikaw, Myanmar (Burma) | |
| 15 | 187.60 miles (301.91 km) S | Sukhothai Airport (THS) | Sukhothai, Thailand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,947.38 miles (19,227.40 km) SW | Maria Reiche Neuman Airport (NZC) | Nazca, Ica Region, Peru | |
| 2 | 11,936.54 miles (19,209.95 km) SSW | Capitán FAP Renán Elías Olivera International Airport (PIO) | Pisco, Peru | |
| 3 | 11,853.77 miles (19,076.74 km) SSW | Jorge Chávez International Airport (LIM) | Callao (near Lima), Peru | |
| 4 | 11,842.33 miles (19,058.33 km) WSW | Ilo Airport (ILQ) | Ilo, Moquegua Region, Peru | |
| 5 | 11,825.48 miles (19,031.22 km) SW | Coronel FAP Alfredo Mendívil Duarte Airport (AYP) | Ayacucho, Peru | |
| 6 | 11,825.48 miles (19,031.22 km) SW | Coronel FAP Alfredo Mendívil Duarte Airport (AYC) | Ayacucho, Peru | |
| 7 | 11,823.59 miles (19,028.18 km) WSW | Rodríguez Ballón International Airport (AQP) | Arequipa, Peru | |
| 8 | 11,815.75 miles (19,015.56 km) SW | Andahuaylas Airport (ANS) | Andahuaylas, Peru | |
| 9 | 11,793.65 miles (18,980.00 km) SSW | Jauja AirportFrancisco Carle Airport (JAU) | Jauja, Peru | |
| 10 | 11,791.55 miles (18,976.61 km) W | Diego Aracena International Airport (IQQ) | Iquique, Chile | |
| 11 | 11,789.11 miles (18,972.69 km) W | Chacalluta International Airport (ARI) | Arica, Chile | |
| 12 | 11,789.11 miles (18,972.69 km) W | Chacalluta International Airport (ACM) | Arica, Amazonas, Colombia | |
| 13 | 11,775.94 miles (18,951.49 km) WSW | Carolina Airport (CLN) | Carolina, Maranhão, Brazil | |
| 14 | 11,770.86 miles (18,943.31 km) WSW | Andrés Sabella Gálvez International Airport (former Cerro Moreno International Airport) (ANF) | Antofagasta, Chile | |
| 15 | 11,737.81 miles (18,890.12 km) SW | Alejandro Velasco Astete International Airport (CUZ) | Cusco, Cusco Region, Peru | |