About this route:

A direct, nonstop flight between Helena Regional Airport (HLN), Helena, Montana, United States and King County International Airport (BFI), Seattle, Washington, United States would travel a Great Circle distance of 489 miles (or 788 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 King County International Airport, 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: BFI / KBFI
Airport Names:
  1. King County International Airport
  2. Boeing Field
Location: Seattle, Washington, United States
GPS Coordinates: 47°31'48"N by 122°18'6"W
Area Served: Seattle, Washington
Airport Type: Public
Elevation: 21 feet (6 meters)
# of Runways: 2
View all routes: Routes from BFI
More Information: BFI Maps & Info

Facts about Helena Regional Airport (HLN):

  • Helena Regional Airport (HLN) has 3 runways.
  • The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.
  • Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
  • 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.
  • 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 King County International Airport (BFI):

  • The Museum of Flight is on the southwest corner of the field.
  • Because of King County International Airport's relatively low elevation of 21 feet, planes can take off or land at King County 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.
  • The furthest airport from King County International Airport (BFI) is Tôlanaro Airport (FTU), which is located 10,775 miles (17,341 kilometers) away in Tôlanaro, Madagascar.
  • In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
  • Boeing Field/King County International Airport covers 634 acres at an elevation of 21 feet above mean sea level.
  • The closest airport to King County International Airport (BFI) is Renton Municipal Airport (RNT), which is located only 5 miles (8 kilometers) ESE of BFI.
  • Except for the World War II period, when it was taken over by the U.S.
  • King County International Airport (BFI) has 2 runways.

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 King County International Airport:

List of Nearest Airports to King County International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
14.76 miles (7.66 km) ESERenton Municipal Airport (RNT)Renton, Washington, United StatesView Renton Municipal Airport on a map Set RNT as destination Airport Set RNT as destination Airport Get more information about Renton Municipal Airport
25.62 miles (9.04 km) SSeattle–Tacoma International Airport (SEA)SeaTac (near Seattle and Tacoma), Washington, United StatesView Seattle–Tacoma International Airport on a map Set SEA as destination Airport Set SEA as destination Airport Get more information about Seattle–Tacoma International Airport
37.04 miles (11.33 km) NNWKenmore Air Harbor Seaplane Base (LKE)Seattle, Washington, United StatesView Kenmore Air Harbor Seaplane Base on a map Set LKE as destination Airport Set LKE as destination Airport Get more information about Kenmore Air Harbor Seaplane Base
415.65 miles (25.19 km) NKenmore Air (KEH)Kenmore, Washington, United StatesView Kenmore Air on a map Set KEH as destination Airport Set KEH as destination Airport Get more information about Kenmore Air
521.77 miles (35.04 km) WBremerton National Airport (PWT)Bremerton, Washington, United StatesView Bremerton National Airport on a map Set PWT as destination Airport Set PWT as destination Airport Get more information about Bremerton National Airport
622.23 miles (35.78 km) SWTacoma Narrows Airport (TIW)Tacoma, Washington, United StatesView Tacoma Narrows Airport on a map Set TIW as destination Airport Set TIW as destination Airport Get more information about Tacoma Narrows Airport
726.00 miles (41.85 km) NPaine Field (PAE)Everett, Washington, United StatesView Paine Field on a map Set PAE as destination Airport Set PAE as destination Airport Get more information about Paine Field
828.30 miles (45.55 km) SSWMcChord Field/McChord AFB (TCM)Tacoma, Washington, United StatesView McChord Field/McChord AFB on a map Set TCM as destination Airport Set TCM as destination Airport Get more information about McChord Field/McChord AFB
933.78 miles (54.36 km) SSWGray Army Airfield (GRF)Tacoma, Washington, United StatesView Gray Army Airfield on a map Set GRF as destination Airport Set GRF as destination Airport Get more information about Gray Army Airfield
1043.22 miles (69.55 km) NNWJefferson County International AirportPort Townsend Army Airfield (TWD)Port Townsend, Washington, United StatesView Jefferson County International AirportPort Townsend Army Airfield on a map Set TWD as destination Airport Set TWD as destination Airport Get more information about Jefferson County International AirportPort Townsend Army Airfield
1144.54 miles (71.69 km) WSWSanderson Field (SHN)Shelton, Washington, United StatesView Sanderson Field on a map Set SHN as destination Airport Set SHN as destination Airport Get more information about Sanderson Field
1247.89 miles (77.07 km) SWOlympia Regional Airport (OLM)Olympia, Washington, United StatesView Olympia Regional Airport on a map Set OLM as destination Airport Set OLM as destination Airport Get more information about Olympia Regional Airport
1352.75 miles (84.90 km) NNWA.J. Eisenberg Airport (ODW)Oak Harbor, Washington, United StatesView A.J. Eisenberg Airport on a map Set ODW as destination Airport Set ODW as destination Airport Get more information about A.J. Eisenberg Airport
1455.59 miles (89.46 km) ESEEaston State Airport (ESW)Easton, Washington, United StatesView Easton State Airport on a map Set ESW as destination Airport Set ESW as destination Airport Get more information about Easton State Airport
1556.81 miles (91.43 km) NWSequim Valley Airport (SQV)Sequim, Washington, United StatesView Sequim Valley Airport on a map Set SQV as destination Airport Set SQV as destination Airport Get more information about Sequim Valley Airport

Map of Furthest Airports from King County International Airport:

List of Furthest Airports from King County International Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,775.32 miles (17,341.16 km) SSETôlanaro 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
210,706.76 miles (17,230.83 km) SSEAmpanihy 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
310,621.55 miles (17,093.68 km) SPierrefonds 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
410,592.12 miles (17,046.32 km) SRoland 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
510,590.11 miles (17,043.08 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
610,588.22 miles (17,040.05 km) ESEEast 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
710,570.73 miles (17,011.90 km) ESEPort 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
810,564.37 miles (17,001.66 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
910,557.66 miles (16,990.87 km) ESEKing Shaka International (DUR)Durban, KwaZulu-Natal, South AfricaView King Shaka International on a map Set DUR as destination Airport Set DUR as destination Airport Get more information about King Shaka International
1010,554.58 miles (16,985.90 km) ESEMthatha Airport (UTT)Mthatha, South AfricaView Mthatha Airport on a map Set UTT as destination Airport Set UTT as destination Airport Get more information about Mthatha Airport
1110,550.10 miles (16,978.71 km) SERichards Bay Airport (RCB)Richards Bay, KwaZulu-Natal, South AfricaView Richards Bay Airport on a map Set RCB as destination Airport Set RCB as destination Airport Get more information about Richards Bay Airport
1210,544.57 miles (16,969.80 km) SSEMananjary 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
1310,540.24 miles (16,962.83 km) SSEFianarantsoa 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
1410,533.70 miles (16,952.30 km) ESEPort 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
1510,530.85 miles (16,947.72 km) ESEPietermaritzburg Airport (PZB)Pietermaritzburg, South AfricaView Pietermaritzburg Airport on a map Set PZB as destination Airport Set PZB as destination Airport Get more information about Pietermaritzburg Airport