Nonstop flight route between Boundji, Republic of the Congo and Helena, Montana, United States:
Departure Airport:
(1°1'58"S by 15°22'58"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from BOE to HLN:
7,977.93 miles (12,839.20 km)
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Jump to:
- About this route
- BOE Airport Information
- HLN Airport Information
- Facts about BOE
- Facts about HLN
- Map of Nearest Airports to BOE
- List of Nearest Airports to BOE
- Map of Furthest Airports from BOE
- List of Furthest Airports from BOE
- 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 Boundji Airport (BOE), Boundji, Republic of the Congo and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 7,978 miles (or 12,839 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 Boundji 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 Boundji 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: | BOE / FCOB |
| Airport Name: | Boundji Airport |
| Location: | Boundji, Republic of the Congo |
| GPS Coordinates: | 1°1'58"S by 15°22'58"E |
| Area Served: | Boundji, Republic of the Congo |
| Elevation: | 1247 feet (380 meters) |
| View all routes: | Routes from BOE |
| More Information: | BOE 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 Boundji Airport (BOE):
- The closest airport to Boundji Airport (BOE) is Oyo Ollombo Airport (OLL), which is located 39 miles (63 kilometers) ESE of BOE.
- The furthest airport from Boundji Airport (BOE) is Cassidy International Airport (CXI), which is located 11,931 miles (19,200 kilometers) away in Christmas Island, Kiribati.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport is a public airport two miles northeast of Helena, in Lewis and Clark County, Montana.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- Helena Regional Airport (HLN) has 3 runways.
- 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.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 38.87 miles (62.55 km) ESE | Oyo Ollombo Airport (OLL) | Oyo, Republic of the Congo, Republic of the Congo |     |
| 2 | 41.59 miles (66.93 km) WNW | Ewo Airport (EWO) | Ewo, Republic of Congo | |
| 3 | 52.30 miles (84.17 km) NE | Owando Airport (FTX) | Owando, Republic of the Congo | |
| 4 | 66.62 miles (107.21 km) SSE | Gamboma Airport (GMM) | Gamboma, Republic of the Congo | |
| 5 | 71.55 miles (115.14 km) N | Makoua Airport (MKJ) | Makoua, Republic of the Congo | |
| 6 | 88.07 miles (141.74 km) NW | Kelle Airport (KEE) | Kelle, Republic of the Congo | |
| 7 | 102.48 miles (164.93 km) W | Akieni Airport (AKE) | Akieni, Gabon | |
| 8 | 112.48 miles (181.02 km) SSW | Djambala Airport (DJM) | Djambala, Republic of Congo | |
| 9 | 114.15 miles (183.71 km) SSW | Lague Airport (LCO) | Lague, Republic of Congo | |
| 10 | 141.07 miles (227.04 km) WSW | M'Vengue El Hadj Omar Bongo Ondimba International Airport (MVB) | Franceville / Mvengue, Gabon | |
| 11 | 150.10 miles (241.57 km) WSW | Moanda Airport (MFF) | Moanda, Gabon | |
| 12 | 165.69 miles (266.65 km) SW | Zanaga Airport (ANJ) | Zanaga, Republic of the Congo | |
| 13 | 197.00 miles (317.04 km) SE | Nioki Airport (NIO) | Nioki, Democratic Republic of the Congo | |
| 14 | 203.50 miles (327.49 km) W | Koulamoutou Airport (Koula Moutou Airport) (KOU) | Koulamoutou, Gabon | |
| 15 | 205.07 miles (330.03 km) WNW | Makokou Airport (MKU) | Makokou, Gabon | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,930.56 miles (19,200.32 km) W | Cassidy International Airport (CXI) | Christmas Island, Kiribati | |
| 2 | 11,881.17 miles (19,120.83 km) ESE | Canton Island Airport (CIS) | Canton Island, Kiribati | |
| 3 | 11,609.92 miles (18,684.30 km) SSW | Manihiki Island Airport (MHX) | Manihiki Island, Cook Islands | |
| 4 | 11,333.05 miles (18,238.73 km) SSE | Fitiuta Airport (FTI) | Fiti‘uta, American Samoa, United States | |
| 5 | 11,330.39 miles (18,234.45 km) SSE | Tau Airport (TAV) | Tau, American Samoa | |
| 6 | 11,329.98 miles (18,233.79 km) SSE | Ofu Airport (OFU) | Ofu, American Samoa | |
| 7 | 11,301.91 miles (18,188.61 km) NNE | Johnston Atoll Airport (JON) | Johnston Atoll, U.S. Minor Outlying Islands | |
| 8 | 11,299.88 miles (18,185.35 km) SSE | Pago Pago International Airport (PPG) | Pago Pago, American Samoa | |
| 9 | 11,298.77 miles (18,183.57 km) SSE | Fagali'i Airport (FGI) | Apia, Samoa | |
| 10 | 11,292.24 miles (18,173.05 km) SSE | Asau Airport (AAU) | Asau, Samoa | |
| 11 | 11,291.98 miles (18,172.63 km) SSE | Faleolo International Airport (APW) | Apia, Upolu Island, Samoa | |
| 12 | 11,289.66 miles (18,168.91 km) SSE | Maota (Salelologa) Airport (MXS) | Maota, Samoa | |
| 13 | 11,169.52 miles (17,975.55 km) SE | Wallis Island (WLS) | Wallis and Futuna Islands | |
| 14 | 11,141.19 miles (17,929.96 km) ESE | Funafuti International Airport (FUN) | Funafuti, Tuvalu | |
| 15 | 11,128.79 miles (17,910.01 km) E | Arorae Island Airport (AIS) | Arorae Island, Kiribati | |
| 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 | |