About this route:

A direct, nonstop flight between Lemhi County Airport (SMN), Salmon, Idaho, United States and St. Mary's County Regional Airport (LTW), Leonardtown, Maryland, United States would travel a Great Circle distance of 1,963 miles (or 3,159 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 Lemhi County Airport and St. Mary's County Regional Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

IATA / ICAO Codes: SMN / KSMN
Airport Name: Lemhi County Airport
Location: Salmon, Idaho, United States
GPS Coordinates: 45°7'26"N by 113°52'53"W
Operator/Owner: Lemhi County
Airport Type: Public
Elevation: 4043 feet (1,232 meters)
# of Runways: 1
View all routes: Routes from SMN
More Information: SMN Maps & Info

Arrival Airport Information:

IATA / ICAO Codes: LTW /
Airport Names:
  1. St. Mary's County Regional Airport
  2. Capt. Walter Francis Duke Regional Airport
  3. none
  4. 2W6
Location: Leonardtown, Maryland, United States
GPS Coordinates: 38°18'55"N by 76°32'59"W
Airport Type: Public
Elevation: 142 feet (43 meters)
# of Runways: 1
View all routes: Routes from LTW
More Information: LTW Maps & Info

Facts about Lemhi County Airport (SMN):

  • Lemhi County Airport (SMN) currently has only 1 runway.
  • The closest airport to Lemhi County Airport (SMN) is Challis Airport (CHL), which is located 45 miles (72 kilometers) SSW of SMN.
  • Because of Lemhi County Airport's high elevation of 4,043 feet, planes must typically fly at a faster airspeed in order to takeoff or land at SMN. Combined with a high temperature, this could make SMN a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
  • The furthest airport from Lemhi County Airport (SMN) is Tôlanaro Airport (FTU), which is located 10,686 miles (17,197 kilometers) away in Tôlanaro, Madagascar.

Facts about St. Mary's County Regional Airport (LTW):

  • In addition to being known as "St. Mary's County Regional Airport", other names for LTW include "Capt. Walter Francis Duke Regional Airport", "none" and "2W6".
  • The closest airport to St. Mary's County Regional Airport (LTW) is Naval Air Station Patuxent River (NHK), which is located only 8 miles (12 kilometers) ESE of LTW.
  • St. Mary's County Regional Airport (LTW) currently has only 1 runway.
  • Because of St. Mary's County Regional Airport's relatively low elevation of 142 feet, planes can take off or land at St. Mary's County Regional 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 St. Mary's County Regional Airport (LTW) is Margaret River Airport (MGV), which is located 11,720 miles (18,862 kilometers) away in Margaret River, Western Australia, Australia.

Map of Nearest Airports to Lemhi County Airport:

List of Nearest Airports to Lemhi County Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
144.63 miles (71.83 km) SSWChallis Airport (CHL)Challis, Idaho, United StatesView Challis Airport on a map Set CHL as origin Airport Set CHL as destination Airport Get more information about Challis Airport
265.34 miles (105.16 km) EDillon 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
388.21 miles (141.95 km) NEBert 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
4105.26 miles (169.40 km) SEDubois Municipal Airport (DBS)Dubois, Idaho, United StatesView Dubois Municipal Airport on a map Set DBS as origin Airport Set DBS as destination Airport Get more information about Dubois Municipal Airport
5109.67 miles (176.50 km) WMcCall Municipal Airport (MYL)McCall, Idaho, United StatesView McCall Municipal Airport on a map Set MYL as origin Airport Set MYL as destination Airport Get more information about McCall Municipal Airport
6113.79 miles (183.12 km) SFriedman Memorial Airport (SUN)Hailey, Idaho, United StatesView Friedman Memorial Airport on a map Set SUN as origin Airport Set SUN as destination Airport Get more information about Friedman Memorial Airport
7124.26 miles (199.97 km) NMissoula 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
8137.25 miles (220.89 km) NEHelena Regional Airport (HLN)Helena, Montana, United StatesView Helena Regional Airport on a map Set HLN as origin Airport Set HLN as destination Airport Get more information about Helena Regional Airport
9138.54 miles (222.96 km) ESEYellowstone 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
10139.78 miles (224.96 km) ENEBozeman 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
11142.78 miles (229.79 km) SEIdaho Falls Regional Airport (IDA)Idaho Falls, Idaho, United StatesView Idaho Falls Regional Airport on a map Set IDA as origin Airport Set IDA as destination Airport Get more information about Idaho Falls Regional Airport
12158.08 miles (254.41 km) SWBoise Airport (BOI)Boise, Idaho, United StatesView Boise Airport on a map Set BOI as origin Airport Set BOI as destination Airport Get more information about Boise Airport
13165.78 miles (266.79 km) SSEPocatello Regional Airport (PIH)Pocatello, Idaho, United StatesView Pocatello Regional Airport on a map Set PIH as origin Airport Set PIH as destination Airport Get more information about Pocatello Regional Airport
14171.20 miles (275.52 km) ENEMission 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
15171.98 miles (276.77 km) WSWOntario Municipal Airport (ONO)Ontario, Oregon, United StatesView Ontario Municipal Airport on a map Set ONO as origin Airport Set ONO as destination Airport Get more information about Ontario Municipal Airport

Map of Furthest Airports from Lemhi County Airport:

List of Furthest Airports from Lemhi County Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,685.72 miles (17,196.96 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
210,683.63 miles (17,193.59 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
310,677.06 miles (17,183.01 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
410,664.05 miles (17,162.08 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
510,656.97 miles (17,150.68 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
610,588.72 miles (17,040.86 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
710,500.49 miles (16,898.86 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
810,477.32 miles (16,861.57 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
910,388.70 miles (16,718.95 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
1010,384.71 miles (16,712.53 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
1110,371.80 miles (16,691.75 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
1210,336.41 miles (16,634.79 km) SSEToamasino 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
1310,326.44 miles (16,618.75 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
1410,311.65 miles (16,594.95 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
1510,289.81 miles (16,559.81 km) SEBelo sur Tsiribihina Airport (BMD)Belo sur Tsiribihina, MadagascarView Belo sur Tsiribihina Airport on a map Set BMD as origin Airport Set BMD as destination Airport Get more information about Belo sur Tsiribihina Airport

Map of Nearest Airports to St. Mary's County Regional Airport:

List of Nearest Airports to St. Mary's County Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
17.77 miles (12.50 km) ESENaval Air Station Patuxent River (NHK)Patuxent River, Maryland, United StatesView Naval Air Station Patuxent River on a map Set NHK as destination Airport Set NHK as destination Airport Get more information about Naval Air Station Patuxent River
232.11 miles (51.68 km) ENECambridge–Dorchester Airport (CGE)Cambridge, Maryland, United StatesView Cambridge–Dorchester Airport on a map Set CGE as destination Airport Set CGE as destination Airport Get more information about Cambridge–Dorchester Airport
338.28 miles (61.61 km) NNWAndrews Field (ADW)Camp Springs, Maryland, United StatesView Andrews Field on a map Set ADW as destination Airport Set ADW as destination Airport Get more information about Andrews Field
442.62 miles (68.59 km) NEEaston Airport (ESN)Easton, Maryland, United StatesView Easton Airport on a map Set ESN as destination Airport Set ESN as destination Airport Get more information about Easton Airport
543.37 miles (69.79 km) NLee Airport (ANP)Annapolis, Maryland, United StatesView Lee Airport on a map Set ANP as destination Airport Set ANP as destination Airport Get more information about Lee Airport
643.90 miles (70.64 km) NWDavison Army Airfield (DAA)Fort Belvoir, Virginia, United StatesView Davison Army Airfield on a map Set DAA as destination Airport Set DAA as destination Airport Get more information about Davison Army Airfield
744.30 miles (71.29 km) NWBolling Air Force Base (BOF)Washington, D.C., United StatesView Bolling Air Force Base on a map Set BOF as destination Airport Set BOF as destination Airport Get more information about Bolling Air Force Base
845.06 miles (72.52 km) WSWA.P. Hill Army Airfield (APH)Fort A.P. Hill, Virginia, United StatesView A.P. Hill Army Airfield on a map Set APH as destination Airport Set APH as destination Airport Get more information about A.P. Hill Army Airfield
945.50 miles (73.23 km) NWRonald Reagan Washington National Airport (DCA)Arlington County, Virginia (near Washington, D.C.), United StatesView Ronald Reagan Washington National Airport on a map Set DCA as destination Airport Set DCA as destination Airport Get more information about Ronald Reagan Washington National Airport
1050.17 miles (80.73 km) NNWCollege Park Airport (CGS)College Park, Maryland, United StatesView College Park Airport on a map Set CGS as destination Airport Set CGS as destination Airport Get more information about College Park Airport
1154.39 miles (87.53 km) NNWTipton Airport (FME)Odenton, Maryland, United StatesView Tipton Airport on a map Set FME as destination Airport Set FME as destination Airport Get more information about Tipton Airport
1256.43 miles (90.81 km) ESalisbury-Ocean City: Wicomico Regional Airport (SBY)Salisbury, Maryland, United StatesView Salisbury-Ocean City: Wicomico Regional Airport on a map Set SBY as destination Airport Set SBY as destination Airport Get more information about Salisbury-Ocean City: Wicomico Regional Airport
1359.26 miles (95.37 km) WNWManassas Regional Airport (HEF)Manassas, Virginia, United StatesView Manassas Regional Airport on a map Set HEF as destination Airport Set HEF as destination Airport Get more information about Manassas Regional Airport
1459.26 miles (95.37 km) WNWManassas Regional Airport (MNZ)Manassas, Virginia, United StatesView Manassas Regional Airport on a map Set MNZ as destination Airport Set MNZ as destination Airport Get more information about Manassas Regional Airport
1559.76 miles (96.18 km) NBaltimore/Washington International Thurgood Marshall Airport (BWI)between Baltimore, Maryland and Washington, D.C., United StatesView Baltimore/Washington International Thurgood Marshall Airport on a map Set BWI as destination Airport Set BWI as destination Airport Get more information about Baltimore/Washington International Thurgood Marshall Airport

Map of Furthest Airports from St. Mary's County Regional Airport:

List of Furthest Airports from St. Mary's County Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
111,720.20 miles (18,861.79 km) WSWMargaret River Airport (MGV)Margaret River, Western Australia, AustraliaView Margaret River Airport on a map Set MGV as destination Airport Set MGV as destination Airport Get more information about Margaret River Airport
211,697.03 miles (18,824.49 km) WSWBusselton Regional Airport (BQB)Busselton, Western Australia, AustraliaView Busselton Regional Airport on a map Set BQB as destination Airport Set BQB as destination Airport Get more information about Busselton Regional Airport
311,677.51 miles (18,793.08 km) WSWManjimup Airport (MJP)Manjimup, Western Australia, AustraliaView Manjimup Airport on a map Set MJP as destination Airport Set MJP as destination Airport Get more information about Manjimup Airport
411,672.64 miles (18,785.24 km) WSWBunbury Airport (BUY)Bunbury, Western Australia, AustraliaView Bunbury Airport on a map Set BUY as destination Airport Set BUY as destination Airport Get more information about Bunbury Airport
511,627.72 miles (18,712.96 km) WSWRottnest Airport (RTS)Rottnest Island, Western Australia, AustraliaView Rottnest Airport on a map Set RTS as destination Airport Set RTS as destination Airport Get more information about Rottnest Airport
611,615.07 miles (18,692.60 km) WSWJandakot Airport (JAD)Jandakot, Western Australia, AustraliaView Jandakot Airport on a map Set JAD as destination Airport Set JAD as destination Airport Get more information about Jandakot Airport
711,608.24 miles (18,681.61 km) WSWAlbany Airport (ALH)Albany, Western Australia, AustraliaView Albany Airport on a map Set ALH as destination Airport Set ALH as destination Airport Get more information about Albany Airport
811,604.71 miles (18,675.92 km) WSWPerth Airport (PER)Perth, Western Australia, AustraliaView Perth Airport on a map Set PER as destination Airport Set PER as destination Airport Get more information about Perth Airport
911,582.36 miles (18,639.95 km) WSWKatanning Airport (KNI)Katanning, Western Australia, AustraliaView Katanning Airport on a map Set KNI as destination Airport Set KNI as destination Airport Get more information about Katanning Airport
1011,574.88 miles (18,627.91 km) SWJurien Bay Airport (JUR)Jurien Bay, Western Australia, AustraliaView Jurien Bay Airport on a map Set JUR as destination Airport Set JUR as destination Airport Get more information about Jurien Bay Airport
1111,514.80 miles (18,531.23 km) SWGeraldton Airport (GET)Geraldton, Western Australia, AustraliaView Geraldton Airport on a map Set GET as destination Airport Set GET as destination Airport Get more information about Geraldton Airport
1211,480.32 miles (18,475.74 km) SWMorawa Airport (MWB)Morawa, Western Australia, AustraliaView Morawa Airport on a map Set MWB as destination Airport Set MWB as destination Airport Get more information about Morawa Airport
1311,473.35 miles (18,464.52 km) SWKalbarri Airport (KAX)Kalbarri, Western Australia, AustraliaView Kalbarri Airport on a map Set KAX as destination Airport Set KAX as destination Airport Get more information about Kalbarri Airport
1411,465.36 miles (18,451.67 km) SWMullewa Airport (MXU)Mullewa, Western Australia, AustraliaView Mullewa Airport on a map Set MXU as destination Airport Set MXU as destination Airport Get more information about Mullewa Airport
1511,395.33 miles (18,338.97 km) SWShark Bay Airport (MJK)Monkey Mia, Western Australia, AustraliaView Shark Bay Airport on a map Set MJK as destination Airport Set MJK as destination Airport Get more information about Shark Bay Airport