Nonstop flight route between São Tomé, São Tomé and Príncipe and Helena, Montana, United States:
Departure Airport:
(0°22'41"N by 6°42'43"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from TMS to HLN:
7,529.05 miles (12,116.80 km)
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Jump to:
- About this route
- TMS Airport Information
- HLN Airport Information
- Facts about TMS
- Facts about HLN
- Map of Nearest Airports to TMS
- List of Nearest Airports to TMS
- Map of Furthest Airports from TMS
- List of Furthest Airports from TMS
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
About this route:
A direct, nonstop flight between São Tomé International Airport (TMS), São Tomé, São Tomé and Príncipe and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 7,529 miles (or 12,117 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 São Tomé International Airport and Helena Regional 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 São Tomé International Airport and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | TMS / FPST |
| Airport Names: |
|
| Location: | São Tomé, São Tomé and Príncipe |
| GPS Coordinates: | 0°22'41"N by 6°42'43"E |
| Area Served: | São Tomé, São Tomé Island, São Tomé and Príncipe |
| Airport Type: | Public |
| Elevation: | 33 feet (10 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from TMS |
| More Information: | TMS Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | HLN / KHLN |
| Airport Names: |
|
| Location: | Helena, Montana, United States |
| GPS Coordinates: | 46°36'24"N by 111°58'58"W |
| Area Served: | Helena, Montana |
| Operator/Owner: | Helena Regional Airport Authority |
| Airport Type: | Public |
| Elevation: | 3877 feet (1,182 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from HLN |
| More Information: | HLN Maps & Info |
Facts about São Tomé International Airport (TMS):
- São Tomé International Airport (TMS) currently has only 1 runway.
- In addition to being known as "São Tomé International Airport", another name for TMS is "Aeroporto Internacional de São Tomé".
- Because of São Tomé International Airport's relatively low elevation of 33 feet, planes can take off or land at São Tomé International 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.
- The furthest airport from São Tomé International Airport (TMS) is Canton Island Airport (CIS), which is nearly antipodal to São Tomé International Airport (meaning São Tomé International Airport is almost on the exact opposite side of the Earth from Canton Island Airport), and is located 12,239 miles (19,696 kilometers) away in Canton Island, Kiribati.
- The closest airport to São Tomé International Airport (TMS) is Libreville Leon M'ba International Airport (LBV), which is located 187 miles (300 kilometers) E of TMS.
Facts about Helena Regional Airport (HLN):
- The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.
- Helena Regional Airport (HLN) has 3 runways.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 186.63 miles (300.35 km) E | Libreville Leon M'ba International Airport (LBV) | Libreville, Gabon |     |
| 2 | 238.33 miles (383.55 km) ENE | Bata Airport (BSG) | Bata, Equatorial Guinea | |
| 3 | 270.99 miles (436.12 km) NNE | Malabo International Airport (SSG) | Malabo, Equatorial Guinea | |
| 4 | 283.88 miles (456.86 km) NE | Kribi Airport (KBI) | Kribi, Cameroon | |
| 5 | 304.46 miles (489.97 km) NE | Limbe Airport (VCC) | Limbe, Cameroon | |
| 6 | 318.42 miles (512.45 km) SE | Gamba Airport (GAX) | Gamba, Gabon | |
| 7 | 320.82 miles (516.31 km) N | Port Harcourt International Airport, Omagwa (PHC) | Port Harcourt, Nigeria | |
| 8 | 325.16 miles (523.30 km) NNE | Akwa Ibom International Airport (QUO) | Uyo, Akwa Ibom State, Nigeria | |
| 9 | 325.46 miles (523.77 km) NE | Douala International Airport (DLA) | Douala, Cameroon | |
| 10 | 337.11 miles (542.52 km) NNE | Margaret Ekpo International Airport (CBQ) | Calabar, Nigeria | |
| 11 | 337.31 miles (542.85 km) ESE | Mouila Airport (MJL) | Mouila, Gabon | |
| 12 | 350.46 miles (564.01 km) ENE | Bitam Airport (BMM) | Bitam, Gabon | |
| 13 | 350.50 miles (564.08 km) N | Sam Mbakwe International Cargo Airport (QOW) | Owerri, Nigeria | |
| 14 | 353.83 miles (569.44 km) ENE | Ebolowa Airport (EBW) | Ebolowa, Cameroon | |
| 15 | 402.49 miles (647.74 km) N | Asaba International Airport (ABB) | Asaba, Delta, Niger | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,238.71 miles (19,696.25 km) SSW | Canton Island Airport (CIS) | Canton Island, Kiribati | |
| 2 | 11,735.10 miles (18,885.77 km) ESE | Arorae Island Airport (AIS) | Arorae Island, Kiribati | |
| 3 | 11,694.18 miles (18,819.90 km) E | Beru Island Airport (BEZ) | Beru, Kiribati | |
| 4 | 11,672.32 miles (18,784.72 km) SE | Funafuti International Airport (FUN) | Funafuti, Tuvalu | |
| 5 | 11,544.61 miles (18,579.21 km) E | Abemama Atoll Airport (AEA) | Abemama Atoll, Kiribati | |
| 6 | 11,532.51 miles (18,559.73 km) E | Aranuka Airport (AAK) | Aranuka, Kiribati | |
| 7 | 11,528.69 miles (18,553.58 km) S | Asau Airport (AAU) | Asau, Samoa | |
| 8 | 11,524.22 miles (18,546.39 km) SSE | Wallis Island (WLS) | Wallis and Futuna Islands | |
| 9 | 11,510.74 miles (18,524.70 km) S | Maota (Salelologa) Airport (MXS) | Maota, Samoa | |
| 10 | 11,503.27 miles (18,512.67 km) S | Faleolo International Airport (APW) | Apia, Upolu Island, Samoa | |
| 11 | 11,500.10 miles (18,507.58 km) S | Fagali'i Airport (FGI) | Apia, Samoa | |
| 12 | 11,492.94 miles (18,496.04 km) E | Marakei Airport (MZK) | Marakei, Kiribati | |
| 13 | 11,491.75 miles (18,494.13 km) E | Bonriki International Airport (TRW) | Tarawa, Kiribati | |
| 14 | 11,480.41 miles (18,475.89 km) E | Abaiang Atoll Airport (ABF) | Abaiang, Kiribati | |
| 15 | 11,460.16 miles (18,443.30 km) S | Pago Pago International Airport (PPG) | Pago Pago, American Samoa | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 51.31 miles (82.58 km) SSW | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 2 | 67.05 miles (107.90 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 3 | 69.72 miles (112.21 km) SE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 72.47 miles (116.63 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 5 | 96.56 miles (155.40 km) SE | Mission Field (LVM) | Livingston, Montana, United States | |
| 6 | 97.30 miles (156.59 km) SSW | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 7 | 102.03 miles (164.20 km) WNW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 122.80 miles (197.63 km) ENE | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 9 | 133.72 miles (215.20 km) N | Shelby Airport (SBX) | Shelby, Montana, United States | |
| 10 | 137.25 miles (220.89 km) SW | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 11 | 138.97 miles (223.65 km) SSE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 12 | 139.51 miles (224.52 km) N | Cut Bank Municipal AirportCut Bank Army Air Field (CTB) | Cut Bank, Montana, United States | |
| 13 | 158.54 miles (255.14 km) NW | Glacier Park International Airport (FCA) | Kalispell, Montana, United States | |
| 14 | 163.70 miles (263.45 km) E | Roundup Airport (RPX) | Roundup, Montana, United States | |
| 15 | 169.14 miles (272.20 km) NE | Havre City-County Airport (HVR) | Havre, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,563.08 miles (16,999.59 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,552.15 miles (16,981.99 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,548.64 miles (16,976.36 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 4 | 10,536.59 miles (16,956.96 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,525.82 miles (16,939.62 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,452.26 miles (16,821.24 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,363.52 miles (16,678.43 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,340.10 miles (16,640.74 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,252.07 miles (16,499.06 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,247.66 miles (16,491.97 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,235.05 miles (16,471.68 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,200.52 miles (16,416.11 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,189.58 miles (16,398.51 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,174.40 miles (16,374.07 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,162.80 miles (16,355.40 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |