Nonstop flight route between Williston, North Dakota, United States and Georgetown, Ascension Island, Saint Helena:
Departure Airport:
(48°10'41"N by 103°38'31"W)
Arrival Airport:
(7°58'9"S by 14°23'38"W)
Distance from ISN to ASI:
6,593.69 miles (10,611.49 km)
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Jump to:
- About this route
- ISN Airport Information
- ASI Airport Information
- Facts about ISN
- Facts about ASI
- Map of Nearest Airports to ISN
- List of Nearest Airports to ISN
- Map of Furthest Airports from ISN
- List of Furthest Airports from ISN
- Map of Nearest Airports to ASI
- List of Nearest Airports to ASI
- Map of Furthest Airports from ASI
- List of Furthest Airports from ASI
About this route:
A direct, nonstop flight between Sloulin Field International Airport (ISN), Williston, North Dakota, United States and RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena would travel a Great Circle distance of 6,594 miles (or 10,611 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 Sloulin Field International Airport and RAF Ascension, 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 Sloulin Field International Airport and RAF Ascension. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ISN / KISN |
| Airport Name: | Sloulin Field International Airport |
| Location: | Williston, North Dakota, United States |
| GPS Coordinates: | 48°10'41"N by 103°38'31"W |
| Area Served: | Williston, North Dakota |
| Operator/Owner: | City of Williston |
| Airport Type: | Public |
| Elevation: | 1982 feet (604 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ISN |
| More Information: | ISN Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | ASI / FHAW |
| Airport Names: |
|
| Location: | Georgetown, Ascension Island, Saint Helena |
| GPS Coordinates: | 7°58'9"S by 14°23'38"W |
| Operator/Owner: | Ministry of Defence |
| View all routes: | Routes from ASI |
| More Information: | ASI Maps & Info |
Facts about Sloulin Field International Airport (ISN):
- Sloulin Field International Airport covers an area of 740 acres at an elevation of 1,982 feet above mean sea level.
- ISN is mostly used for general aviation but is served by United Express, with three flights a day with service to Denver, and Delta Connection, with three flights a day with service to Minneapolis-St.
- The furthest airport from Sloulin Field International Airport (ISN) is Sir Gaëtan Duval Airport (RRG), which is located 10,343 miles (16,646 kilometers) away in Rodrigues Island, Mauritius.
- Sloulin Field International Airport (ISN) has 2 runways.
- The closest airport to Sloulin Field International Airport (ISN) is Sidney-Richland Municipal Airport (SDY), which is located 41 miles (67 kilometers) SW of ISN.
Facts about RAF Ascension (ASI):
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
- The furthest airport from RAF Ascension (ASI) is Ujae Airport (UJE), which is nearly antipodal to RAF Ascension (meaning RAF Ascension is almost on the exact opposite side of the Earth from Ujae Airport), and is located 12,370 miles (19,907 kilometers) away in Ujae Atoll, Marshall Islands.
- The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
- The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
- Ascension serves as a diversion airport for ETOPS aircraft crossing the Atlantic.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 41.33 miles (66.52 km) SW | Sidney-Richland Municipal Airport (SDY) | Sidney, Montana, United States |     |
| 2 | 58.38 miles (93.96 km) NW | Sher-Wood Airport (PWD) | Plentywood, Montana, United States | |
| 3 | 77.70 miles (125.05 km) NNE | Estevan Regional Aerodrome (YEN) | Estevan, Saskatchewan, Canada | |
| 4 | 89.31 miles (143.72 km) W | L. M. Clayton Airport (OLF) | Wolf Point, Montana, United States | |
| 5 | 89.98 miles (144.81 km) SW | Dawson Community Airport (GDV) | Glendive, Montana, United States | |
| 6 | 103.16 miles (166.01 km) SSE | Dickinson Theodore Roosevelt Regional Airport (DIK) | Dickinson, North Dakota, United States | |
| 7 | 106.27 miles (171.02 km) E | Minot Air Force Base (MIB) | Minot, North Dakota, United States | |
| 8 | 108.97 miles (175.38 km) E | Minot International Airport (MOT) | Minot, North Dakota, United States | |
| 9 | 136.92 miles (220.35 km) W | Glasgow International Airport (GGW) | Glasgow, Montana, United States | |
| 10 | 137.94 miles (221.99 km) S | Bowman Municipal Airport (BWM) | Bowman, North Dakota, United States | |
| 11 | 160.21 miles (257.84 km) SW | Miles City Airport (MLS) | Miles City, Montana, United States | |
| 12 | 162.43 miles (261.41 km) NNW | Regina International Airport (YQR) | Regina, Saskatchewan, Canada | |
| 13 | 164.58 miles (264.87 km) WSW | Jordan Airport (JDN) | Jordan, Montana, United States | |
| 14 | 166.49 miles (267.93 km) SE | Bismarck Municipal Airport (BIS) | Bismarck, North Dakota, United States | |
| 15 | 171.99 miles (276.80 km) NNW | CFB Moose Jaw (YMJ) | Moose Jaw, Saskatchewan, Canada | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,343.31 miles (16,645.91 km) SSE | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,256.31 miles (16,505.88 km) SE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 3 | 10,249.07 miles (16,494.23 km) SE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,225.08 miles (16,455.63 km) SE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,221.74 miles (16,450.25 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 6 | 10,197.81 miles (16,411.75 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 7 | 10,188.94 miles (16,397.46 km) W | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 8 | 10,179.06 miles (16,381.56 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 9 | 10,172.04 miles (16,370.27 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 10 | 10,141.19 miles (16,320.62 km) W | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 11 | 10,117.88 miles (16,283.11 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 12 | 10,106.68 miles (16,265.08 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 13 | 10,096.36 miles (16,248.47 km) W | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 14 | 10,095.83 miles (16,247.62 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 15 | 10,074.99 miles (16,214.08 km) ESE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 964.90 miles (1,552.85 km) NNE | Sasstown Airport (SAZ) | Sasstown, Liberia | |
| 2 | 970.07 miles (1,561.18 km) NNE | Cape Palmas Airport (CPA) | Cape Palmas, Liberia | |
| 3 | 970.61 miles (1,562.04 km) NNE | Greenville/Sinoe Airport (SNI) | Greenville, Liberia | |
| 4 | 1,004.06 miles (1,615.87 km) NNE | Buchanan Airport (UCN) | Buchanan, Liberia | |
| 5 | 1,016.52 miles (1,635.93 km) NNE | Spriggs Payne Airport (MLW) | Monrovia, Liberia | |
| 6 | 1,019.92 miles (1,641.40 km) NNE | Roberts International Airport Roberts Field (ROB) | Monrovia, Liberia | |
| 7 | 1,057.48 miles (1,701.85 km) NNE | Sassandra Airport (ZSS) | Sassandra, Côte d'Ivoire | |
| 8 | 1,060.22 miles (1,706.26 km) NNE | Tchien Airport (THC) | Tchien, Liberia | |
| 9 | 1,078.81 miles (1,736.16 km) N | Sherbro International Airport (BTE) | Bonthe, Sierra Leone | |
| 10 | 1,099.23 miles (1,769.04 km) N | Gbangbatok Airport (GBK) | Gbangbatok, Sierra Leone | |
| 11 | 1,108.19 miles (1,783.46 km) NNE | Guiglo Airport (GGO) | Guiglo, Côte d'Ivoire | |
| 12 | 1,114.35 miles (1,793.37 km) N | Bo Airport (KBS) | Bo, Sierra Leone | |
| 13 | 1,118.49 miles (1,800.03 km) NNE | Kenema Airport (KEN) | Kenema, Sierra Leone | |
| 14 | 1,131.83 miles (1,821.51 km) NNE | Gagnoa Airport (GGN) | Gagnoa, Côte d'Ivoire | |
| 15 | 1,133.99 miles (1,824.97 km) N | Hastings Airport (HGS) | Freetown, Sierra Leone | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,369.71 miles (19,907.06 km) N | Ujae Airport (UJE) | Ujae Atoll, Marshall Islands | |
| 2 | 12,357.05 miles (19,886.69 km) NW | Lae Airport (LML) | Lae Atoll, Marshall Islands | |
| 3 | 12,310.77 miles (19,812.22 km) NW | Elenak Airport (EAL) | Elenak, Marshall Islands | |
| 4 | 12,282.52 miles (19,766.74 km) WNW | Bucholz Army Airfield (KWA) | Kwajalein, Marshall Islands | |
| 5 | 12,282.50 miles (19,766.72 km) WNW | Ebadon Airstrip (EBN) | Kwajalein Atoll, Marshall Islands | |
| 6 | 12,282.14 miles (19,766.14 km) N | Wotho Airport (WTO) | Wotho, Marshall Islands | |
| 7 | 12,254.29 miles (19,721.32 km) W | Majkin Airport (MJE) | Majkin, Marshall Islands | |
| 8 | 12,232.07 miles (19,685.57 km) W | Woja Airport (WJA) | Woja, Marshall Islands | |
| 9 | 12,217.96 miles (19,662.86 km) W | Ailinglaplap Atoll (AIP) | Ailinglaplap Atoll, Marshall Islands | |
| 10 | 12,205.53 miles (19,642.85 km) W | Jabot Airport (JAT) | Jabat Island, Marshall Islands | |
| 11 | 12,205.39 miles (19,642.62 km) W | Jeh Airport (JEJ) | Ailinglaplap Atoll, Marshall Islands | |
| 12 | 12,200.28 miles (19,634.41 km) NW | Namorik Airport (NDK) | Namorik Atoll, Marshall Islands | |
| 13 | 12,199.88 miles (19,633.75 km) NNW | Rongelap Airport (RNP) | Rongelap Atoll, Marshall Islands | |
| 14 | 12,191.27 miles (19,619.90 km) N | Bikini Atoll Airport (BII) | Bikini Atoll, Marshall Islands | |
| 15 | 12,180.68 miles (19,602.86 km) NE | Kosrae International Airport (KSA) | Kosrae, Federated States of Micronesia | |