Nonstop flight route between Unalaska, Alaska, United States and Helena, Montana, United States:
Departure Airport:
(53°53'56"N by 166°32'41"W)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from DUT to HLN:
2,399.75 miles (3,862.01 km)
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Jump to:
- About this route
- DUT Airport Information
- HLN Airport Information
- Facts about DUT
- Facts about HLN
- Map of Nearest Airports to DUT
- List of Nearest Airports to DUT
- Map of Furthest Airports from DUT
- List of Furthest Airports from DUT
- 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 Unalaska Airport (DUT), Unalaska, Alaska, United States and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 2,400 miles (or 3,862 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 Unalaska Airport 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: | DUT / PADU |
| Airport Names: |
|
| Location: | Unalaska, Alaska, United States |
| GPS Coordinates: | 53°53'56"N by 166°32'41"W |
| Area Served: | Unalaska, Alaska |
| Operator/Owner: | State of Alaska DOT&PF - Central Region |
| Airport Type: | Public |
| Elevation: | 22 feet (7 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from DUT |
| More Information: | DUT 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 Unalaska Airport (DUT):
- Unalaska Airport (DUT) currently has only 1 runway.
- Scheduled commercial airline service is provided by PenAir, a code share partner of Alaska Airlines.
- In addition to being known as "Unalaska Airport", other names for DUT include "Dutch Harbor Airport" and "Tom Madsen Airport".
- The closest airport to Unalaska Airport (DUT) is Akutan Seaplane Base (KQA), which is located 35 miles (56 kilometers) ENE of DUT.
- Because of Unalaska Airport's relatively low elevation of 22 feet, planes can take off or land at Unalaska 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 Unalaska Airport (DUT) is Cape Town International Airport (CPT), which is located 11,037 miles (17,763 kilometers) away in Cape Town, South Africa.
Facts about Helena Regional Airport (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.
- 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 | 35.10 miles (56.49 km) ENE | Akutan Seaplane Base (KQA) | Akutan, Alaska, United States |     |
| 2 | 115.63 miles (186.09 km) SW | Nikolski Air Station (IKO) | Nikolski, Alaska, United States | |
| 3 | 142.15 miles (228.78 km) ENE | False Pass Airport (KFP) | False Pass, Alaska, United States | |
| 4 | 160.46 miles (258.23 km) ENE | Pauloff Harbor Seaplane Base (KPH) | Sanak Island, Alaska, United States | |
| 5 | 177.69 miles (285.96 km) ENE | Cold Bay Airport (CDB) | Cold Bay, Alaska, United States | |
| 6 | 191.11 miles (307.56 km) ENE | King Cove Airport (KVC) | King Cove, Alaska, United States | |
| 7 | 222.07 miles (357.39 km) NNW | St. George Airport (STG) | St. George, Alaska, United States | |
| 8 | 258.48 miles (415.98 km) NE | Nelson Lagoon Airport (NLG) | Nelson Lagoon, Alaska, United States | |
| 9 | 260.01 miles (418.45 km) ENE | Sand Point Airport (SDP) | Sand Point, Alaska, United States | |
| 10 | 267.59 miles (430.64 km) NNW | St. Paul Island Airport (SNP) | St. Paul Island, Alaska, United States | |
| 11 | 278.38 miles (448.00 km) NE | Port Moller Airport (PML) | Cold Bay, Alaska, United States | |
| 12 | 324.27 miles (521.87 km) ENE | Perryville Airport (KPV) | Perryville, Alaska, United States | |
| 13 | 338.39 miles (544.58 km) WSW | Atka Airport (AKB) | Atka, Alaska, United States | |
| 14 | 347.50 miles (559.25 km) ENE | Chignik Lake Airport (KCQ) | Chignik Lake, Alaska, United States | |
| 15 | 355.74 miles (572.51 km) ENE | Chignik Fisheries Airport (KCG) | Chignik, Alaska, United States. | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,037.14 miles (17,762.52 km) SSW | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,995.13 miles (17,694.91 km) SSW | George Airport (GRJ) | George, South Africa | |
| 3 | 10,938.74 miles (17,604.15 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,885.53 miles (17,518.51 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,832.30 miles (17,432.85 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,753.73 miles (17,306.41 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 7 | 10,718.30 miles (17,249.39 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 8 | 10,714.69 miles (17,243.58 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 9 | 10,714.69 miles (17,243.58 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 10 | 10,680.07 miles (17,187.86 km) S | Alexander Bay Airport (ALJ) | Alexander Bay, South Africa | |
| 11 | 10,637.02 miles (17,118.58 km) SW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 12 | 10,634.24 miles (17,114.11 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 13 | 10,631.42 miles (17,109.57 km) SSW | Upington Airport (UTN) | Upington, South Africa | |
| 14 | 10,629.75 miles (17,106.88 km) S | Karasburg Airport (KAS) | Karasburg, Namibia | |
| 15 | 10,620.66 miles (17,092.25 km) SSW | Semonkong Airport (SOK) | Semonkong, 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 | |