About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and Casco Cove Coast Guard Station (ATU), Attu Island, Alaska, United States would travel a Great Circle distance of 3,217 miles (or 5,177 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 Helena Regional Airport and Casco Cove Coast Guard Station, 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 Helena Regional Airport and Casco Cove Coast Guard Station. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

IATA / ICAO Codes: HLN / KHLN
Airport Names:
  1. Helena Regional Airport
  2. Helena Army Airfield
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

Arrival Airport Information:

IATA / ICAO Codes: ATU / PAAT
Airport Names:
  1. Casco Cove Coast Guard Station
  2. LORAN Station Attu
  3. (former Naval Air Facility Attu)
Location: Attu Island, Alaska, United States
GPS Coordinates: 52°49'57"N by 173°10'32"E
Operator/Owner: U.S. Coast Guard 17th Dist.
Airport Type: Private use
Elevation: 88 feet (27 meters)
# of Runways: 1
View all routes: Routes from ATU
More Information: ATU Maps & Info

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".
  • 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.

Facts about Casco Cove Coast Guard Station (ATU):

  • In addition to being known as "Casco Cove Coast Guard Station", other names for ATU include "LORAN Station Attu" and "(former Naval Air Facility Attu)".
  • The closest airport to Casco Cove Coast Guard Station (ATU) is Eareckson Air Station (SYA), which is located 40 miles (65 kilometers) ESE of ATU.
  • Casco Cove is one of the most isolated and remote airports in the United States.
  • Casco Cove Coast Guard Station (ATU) currently has only 1 runway.
  • Because of Casco Cove Coast Guard Station's relatively low elevation of 88 feet, planes can take off or land at Casco Cove Coast Guard Station 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 Casco Cove Coast Guard Station (ATU) is Cape Town International Airport (CPT), which is located 10,631 miles (17,109 kilometers) away in Cape Town, South Africa.
  • Casco Cove CGS resides at elevation of 88 feet above mean sea level.

Map of Nearest Airports to Helena Regional Airport:

List of Nearest Airports to Helena Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
151.31 miles (82.58 km) SSWBert Mooney Airport (BTM)Butte, Montana, United StatesView Bert Mooney Airport on a map Set BTM as origin Airport Set BTM as destination Airport Get more information about Bert Mooney Airport
267.05 miles (107.90 km) NNEGreat Falls International Airport (GTF)Great Falls, Montana, United StatesView Great Falls International Airport on a map Set GTF as origin Airport Set GTF as destination Airport Get more information about Great Falls International Airport
369.72 miles (112.21 km) SEBozeman Yellowstone International Airport (BZN)Bozeman, Montana, United StatesView Bozeman Yellowstone International Airport on a map Set BZN as origin Airport Set BZN as destination Airport Get more information about Bozeman Yellowstone International Airport
472.47 miles (116.63 km) NNEMalmstrom Air Force Base (GFA)Great Falls, Montana, United StatesView Malmstrom Air Force Base on a map Set GFA as origin Airport Set GFA as destination Airport Get more information about Malmstrom Air Force Base
596.56 miles (155.40 km) SEMission Field (LVM)Livingston, Montana, United StatesView Mission Field on a map Set LVM as origin Airport Set LVM as destination Airport Get more information about Mission Field
697.30 miles (156.59 km) SSWDillon Airport (DLN)Dillon, Montana, United StatesView Dillon Airport on a map Set DLN as origin Airport Set DLN as destination Airport Get more information about Dillon Airport
7102.03 miles (164.20 km) WNWMissoula International Airport (MSO)Missoula, Montana, United StatesView Missoula International Airport on a map Set MSO as origin Airport Set MSO as destination Airport Get more information about Missoula International Airport
8122.80 miles (197.63 km) ENELewistown Municipal Airport (LWT)Lewistown, Montana, United StatesView Lewistown Municipal Airport on a map Set LWT as origin Airport Set LWT as destination Airport Get more information about Lewistown Municipal Airport
9133.72 miles (215.20 km) NShelby Airport (SBX)Shelby, Montana, United StatesView Shelby Airport on a map Set SBX as origin Airport Set SBX as destination Airport Get more information about Shelby Airport
10137.25 miles (220.89 km) SWLemhi County Airport (SMN)Salmon, Idaho, United StatesView Lemhi County Airport on a map Set SMN as origin Airport Set SMN as destination Airport Get more information about Lemhi County Airport
11138.97 miles (223.65 km) SSEYellowstone Airport (WYS)West Yellowstone, Montana, United StatesView Yellowstone Airport on a map Set WYS as origin Airport Set WYS as destination Airport Get more information about Yellowstone Airport
12139.51 miles (224.52 km) NCut Bank Municipal AirportCut Bank Army Air Field (CTB)Cut Bank, Montana, United StatesView Cut Bank Municipal AirportCut Bank Army Air Field on a map Set CTB as origin Airport Set CTB as destination Airport Get more information about Cut Bank Municipal AirportCut Bank Army Air Field
13158.54 miles (255.14 km) NWGlacier Park International Airport (FCA)Kalispell, Montana, United StatesView Glacier Park International Airport on a map Set FCA as origin Airport Set FCA as destination Airport Get more information about Glacier Park International Airport
14163.70 miles (263.45 km) ERoundup Airport (RPX)Roundup, Montana, United StatesView Roundup Airport on a map Set RPX as origin Airport Set RPX as destination Airport Get more information about Roundup Airport
15169.14 miles (272.20 km) NEHavre City-County Airport (HVR)Havre, Montana, United StatesView Havre City-County Airport on a map Set HVR as origin Airport Set HVR as destination Airport Get more information about Havre City-County Airport

Map of Furthest Airports from Helena Regional Airport:

List of Furthest Airports from Helena Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,563.08 miles (16,999.59 km) SSir Gaëtan Duval Airport (RRG)Rodrigues Island, MauritiusView Sir Gaëtan Duval Airport on a map Set RRG as origin Airport Set RRG as destination Airport Get more information about Sir Gaëtan Duval Airport
210,552.15 miles (16,981.99 km) SSEPierrefonds Airport (ZSE)Saint-Pierre, RéunionView Pierrefonds Airport on a map Set ZSE as origin Airport Set ZSE as destination Airport Get more information about Pierrefonds Airport
310,548.64 miles (16,976.36 km) SETôlanaro Airport (FTU)Tôlanaro, MadagascarView Tôlanaro Airport on a map Set FTU as origin Airport Set FTU as destination Airport Get more information about Tôlanaro Airport
410,536.59 miles (16,956.96 km) SSESir Seewoosagur Ramgoolam International Airport (MRU)Plaisance, MauritiusView Sir Seewoosagur Ramgoolam International Airport on a map Set MRU as origin Airport Set MRU as destination Airport Get more information about Sir Seewoosagur Ramgoolam International Airport
510,525.82 miles (16,939.62 km) SSERoland Garros Airport (RUN)St Denis, Réunion, FranceView Roland Garros Airport on a map Set RUN as origin Airport Set RUN as destination Airport Get more information about Roland Garros Airport
610,452.26 miles (16,821.24 km) SEAmpanihy Airport (AMP)Ampanihy, MadagascarView Ampanihy Airport on a map Set AMP as origin Airport Set AMP as destination Airport Get more information about Ampanihy Airport
710,363.52 miles (16,678.43 km) SEMananjary Airport (MNJ)Mananjary, MadagascarView Mananjary Airport on a map Set MNJ as origin Airport Set MNJ as destination Airport Get more information about Mananjary Airport
810,340.10 miles (16,640.74 km) SEFianarantsoa Airport (WFI)Fianarantsoa, MadagascarView Fianarantsoa Airport on a map Set WFI as origin Airport Set WFI as destination Airport Get more information about Fianarantsoa Airport
910,252.07 miles (16,499.06 km) SEAndavadoaka Airport (DVD)Andavadoaka, Toliara province, Atsimo-Andrefana region, MadagascarView Andavadoaka Airport on a map Set DVD as origin Airport Set DVD as destination Airport Get more information about Andavadoaka Airport
1010,247.66 miles (16,491.97 km) SEManja Airport (MJA)Manja, Menabe, MadagascarView Manja Airport on a map Set MJA as origin Airport Set MJA as destination Airport Get more information about Manja Airport
1110,235.05 miles (16,471.68 km) SEMorombe Airport (MXM)Morombe, MadagascarView Morombe Airport on a map Set MXM as origin Airport Set MXM as destination Airport Get more information about Morombe Airport
1210,200.52 miles (16,416.11 km) SEToamasino Airport (TMM)Toamasina, MadagascarView Toamasino Airport on a map Set TMM as origin Airport Set TMM as destination Airport Get more information about Toamasino Airport
1310,189.58 miles (16,398.51 km) SEIvato International Airport (TNR)Antananarivo, MadagascarView Ivato International Airport on a map Set TNR as origin Airport Set TNR as destination Airport Get more information about Ivato International Airport
1410,174.40 miles (16,374.07 km) SEMiandrivazo Airport (ZVA)Miandrivazo, MadagascarView Miandrivazo Airport on a map Set ZVA as origin Airport Set ZVA as destination Airport Get more information about Miandrivazo Airport
1510,162.80 miles (16,355.40 km) ESEMargate Airport (MGH)Margate, KwaZulu-Natal, South AfricaView Margate Airport on a map Set MGH as origin Airport Set MGH as destination Airport Get more information about Margate Airport

Map of Nearest Airports to Casco Cove Coast Guard Station:

List of Nearest Airports to Casco Cove Coast Guard Station:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
140.08 miles (64.50 km) ESEEareckson Air Station (SYA)Shemya, Alaska, United StatesView Eareckson Air Station on a map Set SYA as destination Airport Set SYA as destination Airport Get more information about Eareckson Air Station
2434.18 miles (698.74 km) EAdak Airport (ADK)Adak Island, Alaska, United StatesView Adak Airport on a map Set ADK as destination Airport Set ADK as destination Airport Get more information about Adak Airport
3531.42 miles (855.23 km) EAtka Airport (AKB)Atka, Alaska, United StatesView Atka Airport on a map Set AKB as destination Airport Set AKB as destination Airport Get more information about Atka Airport
4611.52 miles (984.14 km) WYelizovo Airport (PKC)Petropavlovsk-Kamchatsky, RussiaView Yelizovo Airport on a map Set PKC as destination Airport Set PKC as destination Airport Get more information about Yelizovo Airport
5720.55 miles (1,159.60 km) ENESt. Paul Island Airport (SNP)St. Paul Island, Alaska, United StatesView St. Paul Island Airport on a map Set SNP as destination Airport Set SNP as destination Airport Get more information about St. Paul Island Airport
6729.92 miles (1,174.68 km) ENESt. George Airport (STG)St. George, Alaska, United StatesView St. George Airport on a map Set STG as destination Airport Set STG as destination Airport Get more information about St. George Airport
7747.48 miles (1,202.95 km) ENikolski Air Station (IKO)Nikolski, Alaska, United StatesView Nikolski Air Station on a map Set IKO as destination Airport Set IKO as destination Airport Get more information about Nikolski Air Station
8823.34 miles (1,325.04 km) NMarkovo Airport (KVM)Markovo, Chukotka Autonomous Okrug, RussiaView Markovo Airport on a map Set KVM as destination Airport Set KVM as destination Airport Get more information about Markovo Airport
9836.44 miles (1,346.12 km) ENEUnalaska Airport (DUT)Unalaska, Alaska, United StatesView Unalaska Airport on a map Set DUT as destination Airport Set DUT as destination Airport Get more information about Unalaska Airport
10837.95 miles (1,348.54 km) NUgolny Airport (DYR)Anadyr, RussiaView Ugolny Airport on a map Set DYR as destination Airport Set DYR as destination Airport Get more information about Ugolny Airport
11866.70 miles (1,394.82 km) ENEAkutan Seaplane Base (KQA)Akutan, Alaska, United StatesView Akutan Seaplane Base on a map Set KQA as destination Airport Set KQA as destination Airport Get more information about Akutan Seaplane Base
12928.25 miles (1,493.87 km) NNEGambell Airport (GAM)Gambell, Alaska, United StatesView Gambell Airport on a map Set GAM as destination Airport Set GAM as destination Airport Get more information about Gambell Airport
13931.23 miles (1,498.67 km) NNEProvideniya Bay Airport (PVS)Provideniya, Chukotka, RussiaView Provideniya Bay Airport on a map Set PVS as destination Airport Set PVS as destination Airport Get more information about Provideniya Bay Airport
14933.22 miles (1,501.86 km) NEMekoryuk Airport (MYU)Mekoryuk, Alaska, United StatesView Mekoryuk Airport on a map Set MYU as destination Airport Set MYU as destination Airport Get more information about Mekoryuk Airport
15950.66 miles (1,529.94 km) NNESavoonga Airport (SVA)Savoonga, Alaska, United StatesView Savoonga Airport on a map Set SVA as destination Airport Set SVA as destination Airport Get more information about Savoonga Airport

Map of Furthest Airports from Casco Cove Coast Guard Station:

List of Furthest Airports from Casco Cove Coast Guard Station:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,631.23 miles (17,109.27 km) SWCape Town International Airport (CPT)Cape Town, South AfricaView Cape Town International Airport on a map Set CPT as destination Airport Set CPT as destination Airport Get more information about Cape Town International Airport
210,501.26 miles (16,900.10 km) WSWGeorge Airport (GRJ)George, South AfricaView George Airport on a map Set GRJ as destination Airport Set GRJ as destination Airport Get more information about George Airport
310,458.69 miles (16,831.59 km) SETeniente Rodolfo Marsh Airport (TNM)Villa Las Estrellas, AntarcticaView Teniente Rodolfo Marsh Airport on a map Set TNM as destination Airport Set TNM as destination Airport Get more information about Teniente Rodolfo Marsh Airport
410,431.40 miles (16,787.68 km) SWKleinsee Airport (KLZ)Kleinzee, South AfricaView Kleinsee Airport on a map Set KLZ as destination Airport Set KLZ as destination Airport Get more information about Kleinsee Airport
510,381.55 miles (16,707.44 km) WSWPort Elizabeth International Airport (PLZ)Port Elizabeth, South AfricaView Port Elizabeth International Airport on a map Set PLZ as destination Airport Set PLZ as destination Airport Get more information about Port Elizabeth International Airport
610,381.37 miles (16,707.15 km) SWAlexander Bay Airport (ALJ)Alexander Bay, South AfricaView Alexander Bay Airport on a map Set ALJ as destination Airport Set ALJ as destination Airport Get more information about Alexander Bay Airport
710,354.51 miles (16,663.93 km) SWAggeneys Airport (AGZ)Aggeneys, South AfricaView Aggeneys Airport on a map Set AGZ as destination Airport Set AGZ as destination Airport Get more information about Aggeneys Airport
810,354.51 miles (16,663.92 km) SWWild Coast Sun Airport (MZF)Mzamba, South AfricaView Wild Coast Sun Airport on a map Set MZF as destination Airport Set MZF as destination Airport Get more information about Wild Coast Sun Airport
910,326.08 miles (16,618.18 km) ESEPort Stanley Airport (PSY)Stanley, Falkland Islands, United KingdomView Port Stanley Airport on a map Set PSY as destination Airport Set PSY as destination Airport Get more information about Port Stanley Airport
1010,311.35 miles (16,594.46 km) WSWPort Alfred Airport (AFD)Port Alfred, South AfricaView Port Alfred Airport on a map Set AFD as destination Airport Set AFD as destination Airport Get more information about Port Alfred Airport
1110,303.30 miles (16,581.51 km) ESERAF Mount Pleasant (MPN)Falkland IslandsView RAF Mount Pleasant on a map Set MPN as destination Airport Set MPN as destination Airport Get more information about RAF Mount Pleasant
1210,302.39 miles (16,580.04 km) SWLüderitz Airport (LUD)Luderitz, NamibiaView Lüderitz Airport on a map Set LUD as destination Airport Set LUD as destination Airport Get more information about Lüderitz Airport
1310,282.92 miles (16,548.71 km) SWKarasburg Airport (KAS)Karasburg, NamibiaView Karasburg Airport on a map Set KAS as destination Airport Set KAS as destination Airport Get more information about Karasburg Airport
1410,248.62 miles (16,493.52 km) WSWEast London Airport (ELS)East London, South AfricaView East London Airport on a map Set ELS as destination Airport Set ELS as destination Airport Get more information about East London Airport
1510,224.59 miles (16,454.85 km) SWUpington Airport (UTN)Upington, South AfricaView Upington Airport on a map Set UTN as destination Airport Set UTN as destination Airport Get more information about Upington Airport