Nonstop flight route between Ampanihy, Madagascar and Helena, Montana, United States:
Departure Airport:
(24°41'58"S by 44°43'59"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from AMP to HLN:
10,452.26 miles (16,821.24 km)
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- About this route
- AMP Airport Information
- HLN Airport Information
- Facts about AMP
- Facts about HLN
- Map of Nearest Airports to AMP
- List of Nearest Airports to AMP
- Map of Furthest Airports from AMP
- List of Furthest Airports from AMP
- 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 Ampanihy Airport (AMP), Ampanihy, Madagascar and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 10,452 miles (or 16,821 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 Ampanihy 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 Ampanihy 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: | AMP / FMSY |
| Airport Name: | Ampanihy Airport |
| Location: | Ampanihy, Madagascar |
| GPS Coordinates: | 24°41'58"S by 44°43'59"E |
| View all routes: | Routes from AMP |
| More Information: | AMP 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 Ampanihy Airport (AMP):
- The furthest airport from Ampanihy Airport (AMP) is Vandenberg Air Force Base (VBG), which is located 11,317 miles (18,213 kilometers) away in Lompoc, California, United States.
- The closest airport to Ampanihy Airport (AMP) is Tôlanaro Airport (FTU), which is located 141 miles (227 kilometers) E of AMP.
Facts about Helena Regional Airport (HLN):
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 141.27 miles (227.35 km) E | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar |     |
| 2 | 201.45 miles (324.21 km) NNW | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 3 | 221.02 miles (355.70 km) NNW | Morombe Airport (MXM) | Morombe, Madagascar | |
| 4 | 228.36 miles (367.51 km) N | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 5 | 271.14 miles (436.35 km) NE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 6 | 334.02 miles (537.55 km) NE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 346.57 miles (557.75 km) N | Belo sur Tsiribihina Airport (BMD) | Belo sur Tsiribihina, Madagascar | |
| 8 | 357.87 miles (575.93 km) N | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 9 | 409.14 miles (658.44 km) N | Ankavandra Airport (JVA) | Ankavandra, Madagascar | |
| 10 | 418.77 miles (673.94 km) NNE | Tsiroanomandidy Airport (WTS) | Tsiroanomandidy, Madagascar | |
| 11 | 444.22 miles (714.89 km) NNE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 12 | 461.60 miles (742.87 km) N | Maintirano Airport (MXT) | Maintirano, Madagascar | |
| 13 | 487.94 miles (785.26 km) N | Ambatomainty Airport (AMY) | Ambatomainty, Madagascar | |
| 14 | 501.48 miles (807.06 km) N | Tambohorano Airport (WTA) | Tambohorano, Madagascar | |
| 15 | 544.98 miles (877.05 km) NE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,317.19 miles (18,213.21 km) NW | Vandenberg Air Force Base (VBG) | Lompoc, California, United States | |
| 2 | 11,315.05 miles (18,209.77 km) NW | Lompoc Airport (LPC) | Lompoc, California, United States | |
| 3 | 11,310.89 miles (18,203.07 km) NW | Santa Cruz Island Airport (SZN) | Santa Barbara, California, United States | |
| 4 | 11,305.52 miles (18,194.43 km) NW | Santa Maria Public Airport (SMX) | Santa Maria, California, United States | |
| 5 | 11,301.56 miles (18,188.05 km) NW | O'Sullivan Army Heliport (CSL) | Camp San Luis Obispo, California, United States | |
| 6 | 11,300.58 miles (18,186.47 km) NW | San Luis Obispo County Regional Airport (SBP) | San Luis Obispo, California, United States | |
| 7 | 11,298.68 miles (18,183.42 km) NW | Santa Ynez Airport (SQA) | Santa Ynez, California, United States | |
| 8 | 11,294.07 miles (18,176.00 km) NW | Santa Barbara Airport (SBA) | Santa Barbara, California, United States | |
| 9 | 11,294.04 miles (18,175.95 km) NW | Monterey Regional Airport (MRY) | Monterey, California, United States | |
| 10 | 11,282.01 miles (18,156.59 km) NW | Paso Robles Municipal AirportEstrella Army Airfield (PRB) | Paso Robles, California, United States | |
| 11 | 11,281.26 miles (18,155.39 km) NW | Roberts Army Heliport (SYL) | Camp Roberts, San Luis Obispo County, California, United States | |
| 12 | 11,280.78 miles (18,154.61 km) NW | Salinas Municipal AirportSalinas Army Air Base (SNS) | Salinas, California, United States | |
| 13 | 11,279.91 miles (18,153.21 km) NW | Mesa Del Rey Airport (KIC) | King City, California, United States | |
| 14 | 11,275.56 miles (18,146.21 km) NW | Watsonville Municipal Airport (WVI) | Watsonville, California, United States | |
| 15 | 11,275.53 miles (18,146.17 km) NW | Half Moon Bay AirportHalf Moon Bay Flight Strip (HAF) | Half Moon Bay, California, United States | |
| 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 | |