About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and O'Sullivan Army Heliport (CSL), Camp San Luis Obispo, California, United States would travel a Great Circle distance of 902 miles (or 1,452 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 Helena Regional Airport and O'Sullivan Army Heliport, the route shown on this map most likely still appears to be a straight line.

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: CSL / KCSL
Airport Name: O'Sullivan Army Heliport
Location: Camp San Luis Obispo, California, United States
GPS Coordinates: 35°19'33"N by 120°44'35"W
Operator/Owner: United States Army
Airport Type: Military
Elevation: 250 feet (76 meters)
View all routes: Routes from CSL
More Information: CSL Maps & Info

Facts about Helena Regional Airport (HLN):

  • In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
  • The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
  • Helena Regional Airport is a public airport two miles northeast of Helena, in Lewis and Clark County, Montana.
  • Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
  • 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 O'Sullivan Army Heliport (CSL):

  • The furthest airport from O'Sullivan Army Heliport (CSL) is Pierrefonds Airport (ZSE), which is located 11,442 miles (18,414 kilometers) away in Saint-Pierre, Réunion.
  • Because of O'Sullivan Army Heliport's relatively low elevation of 250 feet, planes can take off or land at O'Sullivan Army Heliport 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 closest airport to O'Sullivan Army Heliport (CSL) is San Luis Obispo County Regional Airport (SBP), which is located only 8 miles (14 kilometers) SE of CSL.

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 O'Sullivan Army Heliport:

List of Nearest Airports to O'Sullivan Army Heliport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
18.40 miles (13.51 km) SESan Luis Obispo County Regional Airport (SBP)San Luis Obispo, California, United StatesView San Luis Obispo County Regional Airport on a map Set SBP as destination Airport Set SBP as destination Airport Get more information about San Luis Obispo County Regional Airport
224.83 miles (39.96 km) NNEPaso Robles Municipal AirportEstrella Army Airfield (PRB)Paso Robles, California, United StatesView Paso Robles Municipal AirportEstrella Army Airfield on a map Set PRB as destination Airport Set PRB as destination Airport Get more information about Paso Robles Municipal AirportEstrella Army Airfield
333.64 miles (54.14 km) SSESanta Maria Public Airport (SMX)Santa Maria, California, United StatesView Santa Maria Public Airport on a map Set SMX as destination Airport Set SMX as destination Airport Get more information about Santa Maria Public Airport
433.78 miles (54.36 km) NRoberts Army Heliport (SYL)Camp Roberts, San Luis Obispo County, California, United StatesView Roberts Army Heliport on a map Set SYL as destination Airport Set SYL as destination Airport Get more information about Roberts Army Heliport
542.19 miles (67.90 km) SSEVandenberg Air Force Base (VBG)Lompoc, California, United StatesView Vandenberg Air Force Base on a map Set VBG as destination Airport Set VBG as destination Airport Get more information about Vandenberg Air Force Base
648.23 miles (77.61 km) SSELompoc Airport (LPC)Lompoc, California, United StatesView Lompoc Airport on a map Set LPC as destination Airport Set LPC as destination Airport Get more information about Lompoc Airport
762.43 miles (100.47 km) SESanta Ynez Airport (SQA)Santa Ynez, California, United StatesView Santa Ynez Airport on a map Set SQA as destination Airport Set SQA as destination Airport Get more information about Santa Ynez Airport
863.08 miles (101.51 km) NNENew Coalinga Municipal Airport (CLG)Coalinga, California, United StatesView New Coalinga Municipal Airport on a map Set CLG as destination Airport Set CLG as destination Airport Get more information about New Coalinga Municipal Airport
965.86 miles (106.00 km) NNWMesa Del Rey Airport (KIC)King City, California, United StatesView Mesa Del Rey Airport on a map Set KIC as destination Airport Set KIC as destination Airport Get more information about Mesa Del Rey Airport
1080.53 miles (129.60 km) SESanta Barbara Airport (SBA)Santa Barbara, California, United StatesView Santa Barbara Airport on a map Set SBA as destination Airport Set SBA as destination Airport Get more information about Santa Barbara Airport
1182.49 miles (132.75 km) NNENaval Air Station Lemoore (NLC)Lemoore, California, United StatesView Naval Air Station Lemoore on a map Set NLC as destination Airport Set NLC as destination Airport Get more information about Naval Air Station Lemoore
1283.84 miles (134.93 km) NECorcoran Airport (CRO)Corcoran, California, United StatesView Corcoran Airport on a map Set CRO as destination Airport Set CRO as destination Airport Get more information about Corcoran Airport
1388.23 miles (142.00 km) EShafter Airport (MIT)Shafter, California, United StatesView Shafter Airport on a map Set MIT as destination Airport Set MIT as destination Airport Get more information about Shafter Airport
1495.23 miles (153.26 km) EMeadows Field (BFL)Bakersfield, California, United StatesView Meadows Field on a map Set BFL as destination Airport Set BFL as destination Airport Get more information about Meadows Field
1597.99 miles (157.70 km) NEMefford Field (TLR)Tulare, California, United StatesView Mefford Field on a map Set TLR as destination Airport Set TLR as destination Airport Get more information about Mefford Field

Map of Furthest Airports from O'Sullivan Army Heliport:

List of Furthest Airports from O'Sullivan Army Heliport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
111,441.78 miles (18,413.71 km) SSEPierrefonds Airport (ZSE)Saint-Pierre, RéunionView Pierrefonds Airport on a map Set ZSE as destination Airport Set ZSE as destination Airport Get more information about Pierrefonds Airport
211,416.20 miles (18,372.55 km) SETôlanaro Airport (FTU)Tôlanaro, MadagascarView Tôlanaro Airport on a map Set FTU as destination Airport Set FTU as destination Airport Get more information about Tôlanaro Airport
311,413.89 miles (18,368.83 km) SSERoland Garros Airport (RUN)St Denis, Réunion, FranceView Roland Garros Airport on a map Set RUN as destination Airport Set RUN as destination Airport Get more information about Roland Garros Airport
411,403.15 miles (18,351.54 km) SSir Seewoosagur Ramgoolam International Airport (MRU)Plaisance, MauritiusView Sir Seewoosagur Ramgoolam International Airport on a map Set MRU as destination Airport Set MRU as destination Airport Get more information about Sir Seewoosagur Ramgoolam International Airport
511,332.44 miles (18,237.76 km) SSWSir Gaëtan Duval Airport (RRG)Rodrigues Island, MauritiusView Sir Gaëtan Duval Airport on a map Set RRG as destination Airport Set RRG as destination Airport Get more information about Sir Gaëtan Duval Airport
611,301.56 miles (18,188.05 km) SEAmpanihy Airport (AMP)Ampanihy, MadagascarView Ampanihy Airport on a map Set AMP as destination Airport Set AMP as destination Airport Get more information about Ampanihy Airport
711,258.75 miles (18,119.16 km) SEMananjary Airport (MNJ)Mananjary, MadagascarView Mananjary Airport on a map Set MNJ as destination Airport Set MNJ as destination Airport Get more information about Mananjary Airport
811,228.55 miles (18,070.55 km) SEFianarantsoa Airport (WFI)Fianarantsoa, MadagascarView Fianarantsoa Airport on a map Set WFI as destination Airport Set WFI as destination Airport Get more information about Fianarantsoa Airport
911,117.74 miles (17,892.23 km) SEManja Airport (MJA)Manja, Menabe, MadagascarView Manja Airport on a map Set MJA as destination Airport Set MJA as destination Airport Get more information about Manja Airport
1011,109.14 miles (17,878.38 km) SEAndavadoaka Airport (DVD)Andavadoaka, Toliara province, Atsimo-Andrefana region, MadagascarView Andavadoaka Airport on a map Set DVD as destination Airport Set DVD as destination Airport Get more information about Andavadoaka Airport
1111,102.43 miles (17,867.58 km) SSEToamasino Airport (TMM)Toamasina, MadagascarView Toamasino Airport on a map Set TMM as destination Airport Set TMM as destination Airport Get more information about Toamasino Airport
1211,095.53 miles (17,856.48 km) SEMorombe Airport (MXM)Morombe, MadagascarView Morombe Airport on a map Set MXM as destination Airport Set MXM as destination Airport Get more information about Morombe Airport
1311,086.78 miles (17,842.39 km) SEIvato International Airport (TNR)Antananarivo, MadagascarView Ivato International Airport on a map Set TNR as destination Airport Set TNR as destination Airport Get more information about Ivato International Airport
1411,060.60 miles (17,800.26 km) SEMiandrivazo Airport (ZVA)Miandrivazo, MadagascarView Miandrivazo Airport on a map Set ZVA as destination Airport Set ZVA as destination Airport Get more information about Miandrivazo Airport
1511,049.62 miles (17,782.60 km) SSESainte Marie Airport (SMS)Île Sainte-Marie, MadagascarView Sainte Marie Airport on a map Set SMS as destination Airport Set SMS as destination Airport Get more information about Sainte Marie Airport