About this route:

A direct, nonstop flight between Cassidy International Airport (CXI), Christmas Island, Kiribati and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 4,111 miles (or 6,616 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 Cassidy International Airport and Helena Regional 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 Cassidy International Airport and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

IATA / ICAO Codes: CXI / PLCH
Airport Name: Cassidy International Airport
Location: Christmas Island, Kiribati
GPS Coordinates: 1°59'9"N by 157°20'58"W
Area Served: Kiritimati
Operator/Owner: Government
Airport Type: Public
Elevation: 5 feet (2 meters)
# of Runways: 1
View all routes: Routes from CXI
More Information: CXI Maps & Info

Arrival 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

Facts about Cassidy International Airport (CXI):

  • The furthest airport from Cassidy International Airport (CXI) is Ikela Airport (IKL), which is nearly antipodal to Cassidy International Airport (meaning Cassidy International Airport is almost on the exact opposite side of the Earth from Ikela Airport), and is located 12,367 miles (19,903 kilometers) away in Ikela, Democratic Republic of the Congo.
  • The airport is at an elevation of 5ft above mean sea level.
  • Because of Cassidy International Airport's relatively low elevation of 5 feet, planes can take off or land at Cassidy 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.
  • Cassidy International Airport (CXI) currently has only 1 runway.
  • The closest airport to Cassidy International Airport (CXI) is Manihiki Island Airport (MHX), which is located 891 miles (1,433 kilometers) SSW of CXI.

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.

Map of Nearest Airports to Cassidy International Airport:

List of Nearest Airports to Cassidy International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
1890.56 miles (1,433.22 km) SSWManihiki Island Airport (MHX)Manihiki Island, Cook IslandsView Manihiki Island Airport on a map Set MHX as origin Airport Set MHX as destination Airport Get more information about Manihiki Island Airport
21,044.58 miles (1,681.09 km) WSWCanton Island Airport (CIS)Canton Island, KiribatiView Canton Island Airport on a map Set CIS as origin Airport Set CIS as destination Airport Get more information about Canton Island Airport
31,229.76 miles (1,979.10 km) NKona International Airport at Keāhole (KOA)Kailua / Kona, Hawaii, United StatesView Kona International Airport at Keāhole on a map Set KOA as origin Airport Set KOA as destination Airport Get more information about Kona International Airport at Keāhole
41,235.14 miles (1,987.75 km) NHilo International Airport (ITO)Hilo, Hawaii, United StatesView Hilo International Airport on a map Set ITO as origin Airport Set ITO as destination Airport Get more information about Hilo International Airport
51,238.50 miles (1,993.17 km) NPōhakuloa Training Area (BSF)Camp Pohakuloa, Hawaii, United StatesView Pōhakuloa Training Area on a map Set BSF as origin Airport Set BSF as destination Airport Get more information about Pōhakuloa Training Area
61,249.90 miles (2,011.52 km) NWaimea-Kohala Airport (MUE)Kamuela, Hawaii, United StatesView Waimea-Kohala Airport on a map Set MUE as origin Airport Set MUE as destination Airport Get more information about Waimea-Kohala Airport
71,266.96 miles (2,038.97 km) NUpolu Airport (UPP)Hawi, Hawaii, United StatesView Upolu Airport on a map Set UPP as origin Airport Set UPP as destination Airport Get more information about Upolu Airport
81,299.19 miles (2,090.84 km) NLanai Airport (LNY)Lanai City, Hawaii, United StatesView Lanai Airport on a map Set LNY as origin Airport Set LNY as destination Airport Get more information about Lanai Airport
91,302.72 miles (2,096.52 km) NHana Airport (HNM)Hana, Hawaii, United StatesView Hana Airport on a map Set HNM as origin Airport Set HNM as destination Airport Get more information about Hana Airport
101,305.95 miles (2,101.72 km) SSEMataiva Airport (MVT)Mataiva, French PolynesiaView Mataiva Airport on a map Set MVT as origin Airport Set MVT as destination Airport Get more information about Mataiva Airport
111,308.19 miles (2,105.33 km) NKahului Airport (OGG)Kahului, Hawaii, United StatesView Kahului Airport on a map Set OGG as origin Airport Set OGG as destination Airport Get more information about Kahului Airport
121,311.97 miles (2,111.41 km) NKapalua Airport (JHM)Lahaina, Hawaii, United StatesView Kapalua Airport on a map Set JHM as origin Airport Set JHM as destination Airport Get more information about Kapalua Airport
131,312.77 miles (2,112.69 km) NWJohnston Atoll Airport (JON)Johnston Atoll, U.S. Minor Outlying IslandsView Johnston Atoll Airport on a map Set JON as origin Airport Set JON as destination Airport Get more information about Johnston Atoll Airport
141,319.03 miles (2,122.77 km) SSEMaupiti Airport (MAU)Maupiti, Leeward Islands, French PolynesiaView Maupiti Airport on a map Set MAU as origin Airport Set MAU as destination Airport Get more information about Maupiti Airport
151,324.40 miles (2,131.41 km) NMolokai Airport (MKK)Kaunakakai, Hawaii, United StatesView Molokai Airport on a map Set MKK as origin Airport Set MKK as destination Airport Get more information about Molokai Airport

Map of Furthest Airports from Cassidy International Airport:

List of Furthest Airports from Cassidy International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
112,367.09 miles (19,902.85 km) SWIkela Airport (IKL)Ikela, Democratic Republic of the CongoView Ikela Airport on a map Set IKL as origin Airport Set IKL as destination Airport Get more information about Ikela Airport
212,324.95 miles (19,835.04 km) SSWLodja Airport (LJA)Lodja, Democratic Republic of the CongoView Lodja Airport on a map Set LJA as origin Airport Set LJA as destination Airport Get more information about Lodja Airport
312,267.24 miles (19,742.16 km) SEBoende Airport (BNB)Boende, Democratic Republic of the CongoView Boende Airport on a map Set BNB as origin Airport Set BNB as destination Airport Get more information about Boende Airport
412,225.17 miles (19,674.45 km) SSWLusambo Airport (LBO)Lusambo, Democratic Republic of the CongoView Lusambo Airport on a map Set LBO as origin Airport Set LBO as destination Airport Get more information about Lusambo Airport
512,214.69 miles (19,657.59 km) SEBasongo Airport (BAN)Basongo, Democratic Republic of the CongoView Basongo Airport on a map Set BAN as origin Airport Set BAN as destination Airport Get more information about Basongo Airport
612,207.64 miles (19,646.24 km) SSWYangambi Airport (YAN)Yangambi, Democratic Republic of the CongoView Yangambi Airport on a map Set YAN as origin Airport Set YAN as destination Airport Get more information about Yangambi Airport
712,202.38 miles (19,637.78 km) WSWKindu Airport (KND)Kindu, Democratic Republic of the CongoView Kindu Airport on a map Set KND as origin Airport Set KND as destination Airport Get more information about Kindu Airport
812,184.71 miles (19,609.34 km) SWBangoka International Airport (FKI)Kisangani, Democratic Republic of the CongoView Bangoka International Airport on a map Set FKI as origin Airport Set FKI as destination Airport Get more information about Bangoka International Airport
912,182.00 miles (19,604.97 km) EBasango Mboliasa Airport (KRZ)Kiri, Democratic Republic of the CongoView Basango Mboliasa Airport on a map Set KRZ as origin Airport Set KRZ as destination Airport Get more information about Basango Mboliasa Airport
1012,166.09 miles (19,579.37 km) SKananga Airport (KGA)Kananga, Democratic Republic of the CongoView Kananga Airport on a map Set KGA as origin Airport Set KGA as destination Airport Get more information about Kananga Airport
1112,144.17 miles (19,544.10 km) SSWMbuji Mayi Airport (MJM)Mbuji Mayi, Democratic Republic of the CongoView Mbuji Mayi Airport on a map Set MJM as origin Airport Set MJM as destination Airport Get more information about Mbuji Mayi Airport
1212,140.82 miles (19,538.70 km) SEIdiofa Airport (IDF)Idiofa, Democratic Republic of the CongoView Idiofa Airport on a map Set IDF as origin Airport Set IDF as destination Airport Get more information about Idiofa Airport
1312,139.66 miles (19,536.84 km) SEBasankusu Airport (BSU)Basankusu, Democratic Republic of the CongoView Basankusu Airport on a map Set BSU as origin Airport Set BSU as destination Airport Get more information about Basankusu Airport
1412,138.75 miles (19,535.38 km) NNELisala Airport (LIQ)Lisala, Democratic Republic of the CongoView Lisala Airport on a map Set LIQ as origin Airport Set LIQ as destination Airport Get more information about Lisala Airport
1512,135.41 miles (19,530.00 km) EInongo Airport (INO)Inongo, Democratic Republic of the CongoView Inongo Airport on a map Set INO as origin Airport Set INO as destination Airport Get more information about Inongo Airport

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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination 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 destination Airport Set MGH as destination Airport Get more information about Margate Airport