Nonstop flight route between Asmara, Eritrea and Helena, Montana, United States:
Departure Airport:
(15°17'30"N by 38°54'38"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from ASM to HLN:
7,793.01 miles (12,541.61 km)
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Jump to:
- About this route
- ASM Airport Information
- HLN Airport Information
- Facts about ASM
- Facts about HLN
- Map of Nearest Airports to ASM
- List of Nearest Airports to ASM
- Map of Furthest Airports from ASM
- List of Furthest Airports from ASM
- 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 Asmara International Airport (ASM), Asmara, Eritrea and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 7,793 miles (or 12,542 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 Asmara 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 Asmara 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: | ASM / HHAS |
| Airport Name: | Asmara International Airport |
| Location: | Asmara, Eritrea |
| GPS Coordinates: | 15°17'30"N by 38°54'38"E |
| Area Served: | Asmara |
| Airport Type: | Military/Public |
| Elevation: | 7661 feet (2,335 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from ASM |
| More Information: | ASM 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 Asmara International Airport (ASM):
- The closest airport to Asmara International Airport (ASM) is Massawa International Airport (MSW), which is located 41 miles (66 kilometers) NE of ASM.
- Because of Asmara International Airport's high elevation of 7,661 feet, planes must typically fly at a faster airspeed in order to takeoff or land at ASM. Combined with a high temperature, this could make ASM a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- Asmara International Airport (ASM) has 2 runways.
- The Asmara airport was created in 1922, the first such facility to be opened in Italian Eritrea.
- The furthest airport from Asmara International Airport (ASM) is Fangatau Airport (FGU), which is nearly antipodal to Asmara International Airport (meaning Asmara International Airport is almost on the exact opposite side of the Earth from Fangatau Airport), and is located 12,398 miles (19,952 kilometers) away in Fangatau, French Polynesia.
- The airport is the most important of Eritrea, even if it has some restrictions because it is located inside the external neighboroughs of Asmara.
- During World War II, the airport was nearly destroyed by the British.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport (HLN) has 3 runways.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 40.73 miles (65.55 km) NE | Massawa International Airport (MSW) | Massawa, Eritrea |     |
| 2 | 80.30 miles (129.23 km) S | Axum Emperor Yohannes IV Airport (AXU) | Axum, Ethiopia | |
| 3 | 132.78 miles (213.69 km) SSE | Alula Aba Nega Airport (MQX) | Mekelle, Tigray, Ethiopia | |
| 4 | 169.14 miles (272.20 km) SW | Humera Airport (HUE) | Humera, Ethiopia | |
| 5 | 172.17 miles (277.08 km) W | Kassala Airport (KSL) | Kassala, Sudan | |
| 6 | 203.87 miles (328.10 km) W | Khashm El Girba Airport (GBU) | Khashm El Girba, Sudan | |
| 7 | 215.62 miles (347.01 km) SSW | Gondar Atse Tewodros Airport (GDQ) | Gondar, Ethiopia | |
| 8 | 229.31 miles (369.04 km) S | Lalibela Airport (LLI) | Lalibela, Ethiopia | |
| 9 | 243.05 miles (391.16 km) SSW | Debre Tabor Airport (DBT) | Debre Tabor, Ethiopia | |
| 10 | 273.85 miles (440.71 km) E | Hodeida International Airport (HOD) | Al Hudaydah (Hodeida), Yemen | |
| 11 | 293.42 miles (472.22 km) ESE | Assab International Airport (ASA) | Assab, Eritrea | |
| 12 | 295.78 miles (476.01 km) S | Combolcha Airport (DSE) | Dessie / Kombolcha, Ethiopia | |
| 13 | 306.77 miles (493.70 km) NNW | Port Sudan New International Airport (PZU) | Port Sudan, Sudan | |
| 14 | 315.78 miles (508.20 km) S | Mekane Selam Airport (MKS) | Mekane Selam, Ethiopia | |
| 15 | 320.58 miles (515.92 km) SW | Galegu Airport (DNX) | Dinder, Sudan | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,397.92 miles (19,952.46 km) SSW | Fangatau Airport (FGU) | Fangatau, French Polynesia | |
| 2 | 12,330.77 miles (19,844.39 km) ESE | Raroia Airport (RRR) | Raroia, French Polynesia | |
| 3 | 12,244.29 miles (19,705.22 km) S | Hao Airport (HOI) | Hao, Tuamotu Island, French Polynesia | |
| 4 | 12,244.28 miles (19,705.21 km) ESE | Makemo Airport (MKP) | Makemo, French Polynesia | |
| 5 | 12,128.42 miles (19,518.75 km) E | Fakarava Airport (FAV) | Fakarava, Society Islands, French Polynesia | |
| 6 | 12,121.39 miles (19,507.44 km) SSW | Nukutavake Airport (NUK) | Nukutavake, Tuamotus, French Polynesia | |
| 7 | 12,110.92 miles (19,490.59 km) ESE | Anaa Airport (AAA) | Anaa, Tuamotus, French Polynesia | |
| 8 | 12,098.94 miles (19,471.31 km) E | Manihi Airport (XMH) | Manihi, French Polynesia | |
| 9 | 12,096.78 miles (19,467.84 km) SW | Pukarua Airport (PUK) | Pukarua, Tuamotus, French Polynesia | |
| 10 | 12,086.58 miles (19,451.42 km) E | Ahe Airport (AHE) | Ahe, French Polynesia | |
| 11 | 12,081.64 miles (19,443.47 km) E | Apataki Airport (APK) | Apataki, French Polynesia | |
| 12 | 12,068.13 miles (19,421.73 km) E | Arutua Airport (AXR) | Arutua, Tuamotus, French Polynesia | |
| 13 | 12,030.32 miles (19,360.87 km) SSW | Atuona Airport (AUQ) | Atuona, Marquesas Islands, French Polynesia | |
| 14 | 12,023.51 miles (19,349.91 km) SSW | Tureira Airport (ZTA) | Tureia, Tuamotus, French Polynesia | |
| 15 | 11,927.51 miles (19,195.41 km) E | Mataiva Airport (MVT) | Mataiva, French Polynesia | |
| 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 | |