About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and Assab International Airport (ASA), Assab, Eritrea would travel a Great Circle distance of 8,023 miles (or 12,912 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 Assab International 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 Helena Regional Airport and Assab International Airport. 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: ASA / HHSB
Airport Name: Assab International Airport
Location: Assab, Eritrea
GPS Coordinates: 13°4'18"N by 42°38'42"E
Area Served: Assab
Airport Type: Public/Military
Elevation: 46 feet (14 meters)
# of Runways: 1
View all routes: Routes from ASA
More Information: ASA Maps & Info

Facts about Helena Regional Airport (HLN):

  • 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 (HLN) has 3 runways.
  • 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 Assab International Airport (ASA):

  • The furthest airport from Assab International Airport (ASA) is Atuona Airport (AUQ), which is nearly antipodal to Assab International Airport (meaning Assab International Airport is almost on the exact opposite side of the Earth from Atuona Airport), and is located 12,182 miles (19,606 kilometers) away in Atuona, Marquesas Islands, French Polynesia.
  • The closest airport to Assab International Airport (ASA) is Obock Airport (OBC), which is located 87 miles (141 kilometers) SSE of ASA.
  • Because of Assab International Airport's relatively low elevation of 46 feet, planes can take off or land at Assab International 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.
  • Assab International Airport (ASA) currently has only 1 runway.

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 Assab International Airport:

List of Nearest Airports to Assab International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
187.40 miles (140.65 km) SSEObock Airport (OBC)Obock, DjiboutiView Obock Airport on a map Set OBC as destination Airport Set OBC as destination Airport Get more information about Obock Airport
2100.81 miles (162.24 km) SSEMoucha Airport (MHI)Moucha Island, DjiboutiView Moucha Airport on a map Set MHI as destination Airport Set MHI as destination Airport Get more information about Moucha Airport
3109.03 miles (175.47 km) ENETa'izz International Airport (TAI)Ta'izz, YemenView Ta'izz International Airport on a map Set TAI as destination Airport Set TAI as destination Airport Get more information about Ta'izz International Airport
4111.64 miles (179.67 km) SSEDjibouti–Ambouli International Airport (JIB)Djibouti, DjiboutiView Djibouti–Ambouli International Airport on a map Set JIB as destination Airport Set JIB as destination Airport Get more information about Djibouti–Ambouli International Airport
5118.27 miles (190.34 km) NHodeida International Airport (HOD)Al Hudaydah (Hodeida), YemenView Hodeida International Airport on a map Set HOD as destination Airport Set HOD as destination Airport Get more information about Hodeida International Airport
6132.86 miles (213.82 km) SAli-Sabieh Airport (AII)Ali-Sabieh, DjiboutiView Ali-Sabieh Airport on a map Set AII as destination Airport Set AII as destination Airport Get more information about Ali-Sabieh Airport
7161.39 miles (259.73 km) EAden International Airport (ADE)Aden, YemenView Aden International Airport on a map Set ADE as destination Airport Set ADE as destination Airport Get more information about Aden International Airport
8196.78 miles (316.69 km) NNEEl Rahaba Airport (Sana'a International) (SAH)Sana'a, YemenView El Rahaba Airport (Sana'a International) on a map Set SAH as destination Airport Set SAH as destination Airport Get more information about El Rahaba Airport (Sana'a International)
9211.03 miles (339.62 km) WAlula Aba Nega Airport (MQX)Mekelle, Tigray, EthiopiaView Alula Aba Nega Airport on a map Set MQX as destination Airport Set MQX as destination Airport Get more information about Alula Aba Nega Airport
10218.69 miles (351.95 km) SBorama Airport (BXX)Borama, SomaliaView Borama Airport on a map Set BXX as destination Airport Set BXX as destination Airport Get more information about Borama Airport
11237.66 miles (382.48 km) ENEBeihan Airport (BHN)Beihan, YemenView Beihan Airport on a map Set BHN as destination Airport Set BHN as destination Airport Get more information about Beihan Airport
12241.19 miles (388.15 km) SWCombolcha Airport (DSE)Dessie / Kombolcha, EthiopiaView Combolcha Airport on a map Set DSE as destination Airport Set DSE as destination Airport Get more information about Combolcha Airport
13241.82 miles (389.16 km) SEBerbera Airport (BBO)Berbera, SomaliaView Berbera Airport on a map Set BBO as destination Airport Set BBO as destination Airport Get more information about Berbera Airport
14244.13 miles (392.89 km) SSWAba Tenna Dejazmach Yilma International Airport (DIR)Dire Dawa, EthiopiaView Aba Tenna Dejazmach Yilma International Airport on a map Set DIR as destination Airport Set DIR as destination Airport Get more information about Aba Tenna Dejazmach Yilma International Airport
15257.86 miles (414.98 km) WSWLalibela Airport (LLI)Lalibela, EthiopiaView Lalibela Airport on a map Set LLI as destination Airport Set LLI as destination Airport Get more information about Lalibela Airport

Map of Furthest Airports from Assab International Airport:

List of Furthest Airports from Assab International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
112,182.46 miles (19,605.71 km) SSEAtuona Airport (AUQ)Atuona, Marquesas Islands, French PolynesiaView Atuona Airport on a map Set AUQ as destination Airport Set AUQ as destination Airport Get more information about Atuona Airport
212,133.68 miles (19,527.21 km) SEFangatau Airport (FGU)Fangatau, French PolynesiaView Fangatau Airport on a map Set FGU as destination Airport Set FGU as destination Airport Get more information about Fangatau Airport
312,075.16 miles (19,433.04 km) SPukarua Airport (PUK)Pukarua, Tuamotus, French PolynesiaView Pukarua Airport on a map Set PUK as destination Airport Set PUK as destination Airport Get more information about Pukarua Airport
412,037.36 miles (19,372.21 km) ESERaroia Airport (RRR)Raroia, French PolynesiaView Raroia Airport on a map Set RRR as destination Airport Set RRR as destination Airport Get more information about Raroia Airport
512,016.60 miles (19,338.80 km) SEHao Airport (HOI)Hao, Tuamotu Island, French PolynesiaView Hao Airport on a map Set HOI as destination Airport Set HOI as destination Airport Get more information about Hao Airport
611,997.34 miles (19,307.79 km) SSENukutavake Airport (NUK)Nukutavake, Tuamotus, French PolynesiaView Nukutavake Airport on a map Set NUK as destination Airport Set NUK as destination Airport Get more information about Nukutavake Airport
711,951.01 miles (19,233.24 km) ESEMakemo Airport (MKP)Makemo, French PolynesiaView Makemo Airport on a map Set MKP as destination Airport Set MKP as destination Airport Get more information about Makemo Airport
811,898.84 miles (19,149.29 km) STureira Airport (ZTA)Tureia, Tuamotus, French PolynesiaView Tureira Airport on a map Set ZTA as destination Airport Set ZTA as destination Airport Get more information about Tureira Airport
911,844.71 miles (19,062.16 km) ESEFakarava Airport (FAV)Fakarava, Society Islands, French PolynesiaView Fakarava Airport on a map Set FAV as destination Airport Set FAV as destination Airport Get more information about Fakarava Airport
1011,844.35 miles (19,061.58 km) EManihi Airport (XMH)Manihi, French PolynesiaView Manihi Airport on a map Set XMH as destination Airport Set XMH as destination Airport Get more information about Manihi Airport
1111,832.10 miles (19,041.88 km) EAhe Airport (AHE)Ahe, French PolynesiaView Ahe Airport on a map Set AHE as destination Airport Set AHE as destination Airport Get more information about Ahe Airport
1211,817.99 miles (19,019.16 km) ESEAnaa Airport (AAA)Anaa, Tuamotus, French PolynesiaView Anaa Airport on a map Set AAA as destination Airport Set AAA as destination Airport Get more information about Anaa Airport
1311,806.29 miles (19,000.34 km) ESEApataki Airport (APK)Apataki, French PolynesiaView Apataki Airport on a map Set APK as destination Airport Set APK as destination Airport Get more information about Apataki Airport
1411,798.23 miles (18,987.37 km) ESEArutua Airport (AXR)Arutua, Tuamotus, French PolynesiaView Arutua Airport on a map Set AXR as destination Airport Set AXR as destination Airport Get more information about Arutua Airport
1511,726.28 miles (18,871.57 km) SSWTotegegie Airport (GMR)Mangareva, Gambier Islands, French PolynesiaView Totegegie Airport on a map Set GMR as destination Airport Set GMR as destination Airport Get more information about Totegegie Airport