Nonstop flight route between Amook Bay, Alaska, United States and Helena, Montana, United States:
Departure Airport:
(57°28'17"N by 153°48'55"W)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from AOS to HLN:
1,892.34 miles (3,045.42 km)
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- About this route
- AOS Airport Information
- HLN Airport Information
- Facts about AOS
- Facts about HLN
- Map of Nearest Airports to AOS
- List of Nearest Airports to AOS
- Map of Furthest Airports from AOS
- List of Furthest Airports from AOS
- 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 Amook Bay Seaplane Base (AOS), Amook Bay, Alaska, United States and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 1,892 miles (or 3,045 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 relatively short distance between Amook Bay Seaplane Base and Helena Regional Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | AOS / |
| Airport Names: |
|
| Location: | Amook Bay, Alaska, United States |
| GPS Coordinates: | 57°28'17"N by 153°48'55"W |
| Area Served: | Amook Bay, Alaska |
| Operator/Owner: | Mike Munsey |
| Airport Type: | Private |
| Elevation: | 0 feet (0 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from AOS |
| More Information: | AOS 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 Amook Bay Seaplane Base (AOS):
- In addition to being known as "Amook Bay Seaplane Base", another name for AOS is "AK81".
- Amook Bay Seaplane Base (AOS) currently has only 1 runway.
- The closest airport to Amook Bay Seaplane Base (AOS) is Zachar Bay Seaplane Base (KZB), which is located only 6 miles (10 kilometers) NNE of AOS.
- Because of Amook Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Amook Bay Seaplane Base 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.
- Amook Bay Seaplane Base has one seaplane landing area designated N/S with a water surface measuring 8,000 by 700 feet.
- The furthest airport from Amook Bay Seaplane Base (AOS) is Port Elizabeth International Airport (PLZ), which is located 10,814 miles (17,403 kilometers) away in Port Elizabeth, South Africa.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- 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.
- 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 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 | 6.22 miles (10.01 km) NNE | Zachar Bay Seaplane Base (KZB) | Zachar Bay, Alaska, United States |     |
| 2 | 7.43 miles (11.96 km) NW | Larsen Bay Airport (KLN) | Larsen Bay, Alaska, United States | |
| 3 | 22.87 miles (36.80 km) NNE | West Point Village Seaplane Base (KWP) | West Point, Kodiak Island Borough, Alaska, United States | |
| 4 | 24.58 miles (39.56 km) WNW | Karluk Airport (KYK) | Karluk, Alaska, United States | |
| 5 | 25.60 miles (41.20 km) NE | San Juan (Uganik) Seaplane Base (UGI) | Uganik Island, United States | |
| 6 | 26.42 miles (42.51 km) SW | Olga Bay Seaplane Base (KOY) | Olga Bay, Kodiak Island Borough, Alaska, United States | |
| 7 | 26.84 miles (43.19 km) SE | Old Harbor Airport (OLH) | Old Harbor, Alaska, United States | |
| 8 | 33.19 miles (53.41 km) SSW | Moser Bay Seaplane Base (KMY) | Moser Bay, Kodiak Island Borough, Alaska, United States | |
| 9 | 39.29 miles (63.24 km) SSW | Akhiok Airport (AKK) | Akhiok, Alaska, United States | |
| 10 | 42.69 miles (68.70 km) NE | Port Bailey Seaplane Base (KPY) | Port Bailey, Kodiak Island Borough, Alaska, United States | |
| 11 | 42.71 miles (68.73 km) SSW | Alitak Seaplane Base (ALZ) | Lazy Bay, Alaska, United States | |
| 12 | 45.82 miles (73.74 km) NE | Port Lions Airport (ORI) | Port Lions, Alaska, United States | |
| 13 | 52.55 miles (84.57 km) ENE | Kodiak Benny Benson State Airport (ADQ) | Kodiak, Alaska, United States | |
| 14 | 58.10 miles (93.50 km) ENE | Kodiak Municipal Airport (KDK) | Kodiak, Alaska, United States | |
| 15 | 59.52 miles (95.79 km) ENE | Ouzinkie Airport (KOZ) | Ouzinkie, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,813.80 miles (17,403.09 km) S | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 2 | 10,805.81 miles (17,390.22 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,783.96 miles (17,355.05 km) S | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 4 | 10,774.64 miles (17,340.05 km) SSE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 5 | 10,746.65 miles (17,295.01 km) S | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,641.64 miles (17,126.01 km) S | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,587.38 miles (17,038.69 km) S | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 8 | 10,527.46 miles (16,942.27 km) S | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 9 | 10,525.41 miles (16,938.96 km) S | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 10 | 10,524.27 miles (16,937.13 km) S | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 11 | 10,518.97 miles (16,928.59 km) S | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 12 | 10,503.61 miles (16,903.88 km) S | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 13 | 10,500.43 miles (16,898.76 km) S | Moshoeshoe I International Airport (MSU) | Maseru, Lesotho | |
| 14 | 10,497.66 miles (16,894.31 km) S | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 15 | 10,484.09 miles (16,872.47 km) S | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |
| 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 | |