Nonstop flight route between Fort Sill, Oklahoma, United States and Summit, Alaska, United States:
Departure Airport:
(34°38'58"N by 98°24'7"W)
Arrival Airport:
(63°19'53"N by 149°7'37"W)
Distance from FSI to UMM:
2,909.81 miles (4,682.87 km)
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Jump to:
- About this route
- FSI Airport Information
- UMM Airport Information
- Facts about FSI
- Facts about UMM
- 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 UMM
- List of Nearest Airports to UMM
- Map of Furthest Airports from UMM
- List of Furthest Airports from UMM
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and Summit Airport (UMM), Summit, Alaska, United States would travel a Great Circle distance of 2,910 miles (or 4,683 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 Summit 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 Summit 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: | UMM / PAST |
| Airport Name: | Summit Airport |
| Location: | Summit, Alaska, United States |
| GPS Coordinates: | 63°19'53"N by 149°7'37"W |
| Area Served: | Summit, Alaska |
| Operator/Owner: | Alaska DOT&PF - Northern Region |
| Airport Type: | Public |
| Elevation: | 2409 feet (734 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from UMM |
| More Information: | UMM Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- Although the Signal corps had been supplying Observation aircraft for the United States Army Field Artillery School since 1915.
- Henry Post Army Airfield is a military use airport located at Fort Sill in Comanche County, Oklahoma, United States.
- The Army will continue to operate and maintain a precision approach radar at Fort Sill's Henry Post Field for the foreseeable future.
- Post Field served as a base for flight training for the Air Service.
- 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.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
- 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.
Facts about Summit Airport (UMM):
- The closest airport to Summit Airport (UMM) is McKinley National Park Airport (MCL), which is located 29 miles (46 kilometers) NNE of UMM.
- Summit Airport (UMM) currently has only 1 runway.
- The furthest airport from Summit Airport (UMM) is Port Elizabeth International Airport (PLZ), which is located 10,397 miles (16,732 kilometers) away in Port Elizabeth, South Africa.
| 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 | 28.51 miles (45.88 km) NNE | McKinley National Park Airport (MCL) | McKinley Park, Alaska, United States | |
| 2 | 76.21 miles (122.64 km) SSW | Talkeetna Airport (TKA) | Talkeetna, Alaska, United States | |
| 3 | 84.02 miles (135.22 km) N | Nenana Municipal Airport (ENN) | Nenana, Alaska, United States | |
| 4 | 104.75 miles (168.58 km) WNW | Minchumina Airport (LMA) | Lake Minchumina, Alaska, United States | |
| 5 | 104.75 miles (168.58 km) WNW | Minchumina Airport (MHM) | Minchumina, Alaska, United States | |
| 6 | 109.46 miles (176.15 km) NNE | Fairbanks International Airport (FAI) | Fairbanks, Alaska, United States | |
| 7 | 110.73 miles (178.20 km) NNE | Eielson Air Force Base (EIL) | Fairbanks, Alaska, United States | |
| 8 | 112.88 miles (181.67 km) SSW | Willow Airport (WOW) | Willow, Alaska, United States | |
| 9 | 113.64 miles (182.88 km) NNE | Ladd Army Airfield (FBK) | Fairbanks / Fort Wainwright, Alaska, United States | |
| 10 | 114.05 miles (183.55 km) ENE | Allen Army Airfield (BIG) | Fort Greely, Delta Junction, Alaska, United States | |
| 11 | 114.89 miles (184.90 km) SW | Skwentna Airport (SKW) | Skwentna, Alaska, United States | |
| 12 | 115.62 miles (186.08 km) ENE | Delta Junction Airport (DJN) | Delta Junction, Alaska, United States | |
| 13 | 119.98 miles (193.09 km) S | Palmer Municipal Airport (PAQ) | Palmer, Alaska, United States | |
| 14 | 122.28 miles (196.79 km) S | Wasilla Airport (WWA) | Wasilla, Alaska, United States | |
| 15 | 123.84 miles (199.30 km) NNW | Manley Hot Springs Airport (MLY) | Manley Hot Springs, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,396.50 miles (16,731.51 km) S | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 2 | 10,377.92 miles (16,701.61 km) SSE | George Airport (GRJ) | George, South Africa | |
| 3 | 10,372.17 miles (16,692.34 km) S | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 4 | 10,340.40 miles (16,641.21 km) SSE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 5 | 10,339.34 miles (16,639.51 km) S | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,238.55 miles (16,477.31 km) S | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,193.08 miles (16,404.13 km) S | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 8 | 10,124.19 miles (16,293.26 km) S | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 9 | 10,119.29 miles (16,285.38 km) S | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 10 | 10,114.47 miles (16,277.62 km) S | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 11 | 10,114.25 miles (16,277.26 km) S | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 12 | 10,109.31 miles (16,269.32 km) S | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 13 | 10,107.31 miles (16,266.11 km) S | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 14 | 10,092.01 miles (16,241.47 km) S | Moshoeshoe I International Airport (MSU) | Maseru, Lesotho | |
| 15 | 10,082.82 miles (16,226.69 km) S | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |