About this route:

A direct, nonstop flight between Columbia Gorge Regional Airport (DLS), The Dalles, Oregon, United States and Thorne Bay Seaplane Base (KTB), Thorne Bay, Alaska, United States would travel a Great Circle distance of 853 miles (or 1,373 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 Columbia Gorge Regional Airport and Thorne Bay Seaplane Base, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

IATA / ICAO Codes: DLS / KDLS
Airport Names:
  1. Columbia Gorge Regional Airport
  2. The Dalles Municipal Airport
Location: The Dalles, Oregon, United States
GPS Coordinates: 45°37'6"N by 121°10'1"W
Area Served: The Dalles, Oregon
Operator/Owner: City of The Dalles, Oregon & Klickitat County, Washington
Airport Type: Public
Elevation: 247 feet (75 meters)
# of Runways: 2
View all routes: Routes from DLS
More Information: DLS Maps & Info

Arrival Airport Information:

IATA / ICAO Codes: KTB /
Airport Name: Thorne Bay Seaplane Base
Location: Thorne Bay, Alaska, United States
GPS Coordinates: 55°41'17"N by 132°32'12"W
Area Served: Thorne Bay, Alaska
Operator/Owner: State of Alaska DOT&PF - Southeast Region
Airport Type: Public
Elevation: 0 feet (0 meters)
# of Runways: 1
View all routes: Routes from KTB
More Information: KTB Maps & Info

Facts about Columbia Gorge Regional Airport (DLS):

  • In addition to being known as "Columbia Gorge Regional Airport", another name for DLS is "The Dalles Municipal Airport".
  • During reconstruction of the original runway 12/30, the runway was renumbered to the current 13/31 designation.
  • The airport covers an area of 997 acres at an elevation of 247 feet above mean sea level.
  • Because of Columbia Gorge Regional Airport's relatively low elevation of 247 feet, planes can take off or land at Columbia Gorge 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 closest airport to Columbia Gorge Regional Airport (DLS) is Cascade Locks State Airport (CZK), which is located 35 miles (56 kilometers) W of DLS.
  • The furthest airport from Columbia Gorge Regional Airport (DLS) is Tôlanaro Airport (FTU), which is located 10,869 miles (17,492 kilometers) away in Tôlanaro, Madagascar.
  • Columbia Gorge Regional Airport (DLS) has 2 runways.

Facts about Thorne Bay Seaplane Base (KTB):

  • The closest airport to Thorne Bay Seaplane Base (KTB) is Hollis Clark Bay Seaplane Base (HYL), which is located only 14 miles (23 kilometers) SSW of KTB.
  • Thorne Bay Seaplane Base (KTB) currently has only 1 runway.
  • The furthest airport from Thorne Bay Seaplane Base (KTB) is Port Alfred Airport (AFD), which is located 10,618 miles (17,088 kilometers) away in Port Alfred, South Africa.
  • Thorne Bay Seaplane Base has one seaplane landing area designated NW/SE with a water surface measuring 5,000 by 2,000 feet.
  • Because of Thorne Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Thorne Bay Seaplane Base 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.

Map of Nearest Airports to Columbia Gorge Regional Airport:

List of Nearest Airports to Columbia Gorge Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
134.61 miles (55.70 km) WCascade Locks State Airport (CZK)Cascade Locks, Oregon, United StatesView Cascade Locks State Airport on a map Set CZK as origin Airport Set CZK as destination Airport Get more information about Cascade Locks State Airport
259.86 miles (96.33 km) WPortland-Troutdale Airport (TTD)Portland, Oregon, United StatesView Portland-Troutdale Airport on a map Set TTD as origin Airport Set TTD as destination Airport Get more information about Portland-Troutdale Airport
365.53 miles (105.45 km) SMadras Municipal AirportMadras Army Airfield (MDJ)Madras, Oregon, United StatesView Madras Municipal AirportMadras Army Airfield on a map Set MDJ as origin Airport Set MDJ as destination Airport Get more information about Madras Municipal AirportMadras Army Airfield
469.17 miles (111.32 km) WPortland International Airport (PDX)Portland, Oregon, United StatesView Portland International Airport on a map Set PDX as origin Airport Set PDX as destination Airport Get more information about Portland International Airport
572.07 miles (115.99 km) NNEYakima Air Terminal (YKM)Yakima, Washington, United StatesView Yakima Air Terminal on a map Set YKM as origin Airport Set YKM as destination Airport Get more information about Yakima Air Terminal
680.14 miles (128.98 km) NNEVagabond Army Heliport (closed to fixed-wing aircraft) (FCT)Yakima, Washington, United StatesView Vagabond Army Heliport (closed to fixed-wing aircraft) on a map Set FCT as origin Airport Set FCT as destination Airport Get more information about Vagabond Army Heliport (closed to fixed-wing aircraft)
786.37 miles (139.00 km) WPortland-Hillsboro Airport (HIO)Hillsboro / Portland, Oregon, United StatesView Portland-Hillsboro Airport on a map Set HIO as origin Airport Set HIO as destination Airport Get more information about Portland-Hillsboro Airport
890.15 miles (145.08 km) WNWSouthwest Washington Regional Airport (KLS)Kelso, Washington, United StatesView Southwest Washington Regional Airport on a map Set KLS as origin Airport Set KLS as destination Airport Get more information about Southwest Washington Regional Airport
992.91 miles (149.52 km) SPrineville Airport (PRZ)Prineville, Oregon, United StatesView Prineville Airport on a map Set PRZ as origin Airport Set PRZ as destination Airport Get more information about Prineville Airport
1093.17 miles (149.94 km) EHermiston Municipal Airport (HES)Hermiston, Oregon, United StatesView Hermiston Municipal Airport on a map Set HES as origin Airport Set HES as destination Airport Get more information about Hermiston Municipal Airport
1194.28 miles (151.72 km) SRoberts Field (RDM)Redmond, Oregon, United StatesView Roberts Field on a map Set RDM as origin Airport Set RDM as destination Airport Get more information about Roberts Field
1298.48 miles (158.48 km) NWSouth Lewis County Airport (TDO)Toledo, Washington, United StatesView South Lewis County Airport on a map Set TDO as origin Airport Set TDO as destination Airport Get more information about South Lewis County Airport
13101.29 miles (163.00 km) ENERichland Airport (RLD)Richland, Washington, United StatesView Richland Airport on a map Set RLD as origin Airport Set RLD as destination Airport Get more information about Richland Airport
14101.81 miles (163.85 km) WSWMcNary Field (SLE)Salem, Oregon, United StatesView McNary Field on a map Set SLE as origin Airport Set SLE as destination Airport Get more information about McNary Field
15102.34 miles (164.70 km) NNEBowers Field (ELN)Ellensburg, Washington, United StatesView Bowers Field on a map Set ELN as origin Airport Set ELN as destination Airport Get more information about Bowers Field

Map of Furthest Airports from Columbia Gorge Regional Airport:

List of Furthest Airports from Columbia Gorge Regional Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,869.14 miles (17,492.15 km) SSETôlanaro 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
210,792.21 miles (17,368.33 km) SSEAmpanihy 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
310,747.00 miles (17,295.57 km) SPierrefonds 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
410,717.89 miles (17,248.73 km) SRoland 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
510,695.21 miles (17,212.23 km) SSir 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
610,648.53 miles (17,137.11 km) SSEMananjary 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
710,639.61 miles (17,122.75 km) SSEFianarantsoa 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
810,631.41 miles (17,109.56 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
910,600.18 miles (17,059.29 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
1010,590.96 miles (17,044.45 km) SSEAndavadoaka 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
1110,581.43 miles (17,029.12 km) ESEEast London Airport (ELS)East London, South AfricaView East London Airport on a map Set ELS as origin Airport Set ELS as destination Airport Get more information about East London Airport
1210,575.11 miles (17,018.94 km) ESEKing Shaka International (DUR)Durban, KwaZulu-Natal, South AfricaView King Shaka International on a map Set DUR as origin Airport Set DUR as destination Airport Get more information about King Shaka International
1310,574.17 miles (17,017.44 km) ESERichards Bay Airport (RCB)Richards Bay, KwaZulu-Natal, South AfricaView Richards Bay Airport on a map Set RCB as origin Airport Set RCB as destination Airport Get more information about Richards Bay Airport
1410,574.02 miles (17,017.19 km) SSEManja 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
1510,571.28 miles (17,012.78 km) SSEMorombe 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

Map of Nearest Airports to Thorne Bay Seaplane Base:

List of Nearest Airports to Thorne Bay Seaplane Base:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
114.06 miles (22.63 km) SSWHollis Clark Bay Seaplane Base (HYL)Hollis, Alaska, United StatesView Hollis Clark Bay Seaplane Base on a map Set HYL as destination Airport Set HYL as destination Airport Get more information about Hollis Clark Bay Seaplane Base
222.34 miles (35.96 km) WSWKlawock Airport (KLW)Klawock, Alaska, United StatesView Klawock Airport on a map Set KLW as destination Airport Set KLW as destination Airport Get more information about Klawock Airport
325.34 miles (40.79 km) NNWCoffman Cove Seaplane Base (KCC)Coffman Cove, Alaska, United StatesView Coffman Cove Seaplane Base on a map Set KCC as destination Airport Set KCC as destination Airport Get more information about Coffman Cove Seaplane Base
427.90 miles (44.90 km) WSWCraig Seaplane Base (CGA)Craig, Alaska, United StatesView Craig Seaplane Base on a map Set CGA as destination Airport Set CGA as destination Airport Get more information about Craig Seaplane Base
529.09 miles (46.82 km) WNWNaukati Bay Seaplane Base (WNC)Tuxekan Island, Alaska, United StatesView Naukati Bay Seaplane Base on a map Set WNC as destination Airport Set WNC as destination Airport Get more information about Naukati Bay Seaplane Base
635.17 miles (56.60 km) WNWTokeen Seaplane Base (TKI)Tokeen, Alaska, United StatesView Tokeen Seaplane Base on a map Set TKI as destination Airport Set TKI as destination Airport Get more information about Tokeen Seaplane Base
735.19 miles (56.63 km) SSWHydaburg Seaplane Base (HYG)Hydaburg, Alaska, United StatesView Hydaburg Seaplane Base on a map Set HYG as destination Airport Set HYG as destination Airport Get more information about Hydaburg Seaplane Base
837.27 miles (59.99 km) NWNorth Whale Seaplane Base (WWP)North Whale Pass, Alaska, United StatesView North Whale Seaplane Base on a map Set WWP as destination Airport Set WWP as destination Airport Get more information about North Whale Seaplane Base
938.70 miles (62.28 km) SWWaterfall Seaplane Base (KWF)Waterfall, Alaska, United StatesView Waterfall Seaplane Base on a map Set KWF as destination Airport Set KWF as destination Airport Get more information about Waterfall Seaplane Base
1039.68 miles (63.87 km) SEKetchikan International Airport (KTN)Ketchikan, Alaska, United StatesView Ketchikan International Airport on a map Set KTN as destination Airport Set KTN as destination Airport Get more information about Ketchikan International Airport
1141.60 miles (66.95 km) SEKetchikan Harbor Seaplane Base (WFB)Ketchikan, Alaska, United StatesView Ketchikan Harbor Seaplane Base on a map Set WFB as destination Airport Set WFB as destination Airport Get more information about Ketchikan Harbor Seaplane Base
1253.80 miles (86.58 km) SEMetlakatla Seaplane Base (MTM)Metlakatla, Annette Island, Alaska, United StatesView Metlakatla Seaplane Base on a map Set MTM as destination Airport Set MTM as destination Airport Get more information about Metlakatla Seaplane Base
1355.40 miles (89.16 km) NWrangell Airport (WRG)Wrangell, Alaska, United StatesView Wrangell Airport on a map Set WRG as destination Airport Set WRG as destination Airport Get more information about Wrangell Airport
1458.51 miles (94.17 km) SEAnnette Island Airport (ANN)Annette Island, Alaska, United StatesView Annette Island Airport on a map Set ANN as destination Airport Set ANN as destination Airport Get more information about Annette Island Airport
1560.66 miles (97.62 km) NWPort Protection Seaplane Base (PPV)Port Protection, Alaska, United StatesView Port Protection Seaplane Base on a map Set PPV as destination Airport Set PPV as destination Airport Get more information about Port Protection Seaplane Base

Map of Furthest Airports from Thorne Bay Seaplane Base:

List of Furthest Airports from Thorne Bay Seaplane Base:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,618.12 miles (17,088.17 km) SEPort 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
210,611.06 miles (17,076.80 km) SEPort 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
310,609.57 miles (17,074.40 km) SEEast 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
410,536.12 miles (16,956.21 km) SEMthatha 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
510,529.16 miles (16,945.00 km) SSEMargate 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
610,521.15 miles (16,932.11 km) SEGeorge Airport (GRJ)George, South AfricaView George Airport on a map Set GRJ as destination Airport Set GRJ as destination Airport Get more information about George Airport
710,464.33 miles (16,840.66 km) SSEKing 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
810,451.86 miles (16,820.59 km) SSEPietermaritzburg 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
910,430.04 miles (16,785.47 km) SELebakeng Airport (LEF)Lebakeng, LesothoView Lebakeng Airport on a map Set LEF as destination Airport Set LEF as destination Airport Get more information about Lebakeng Airport
1010,425.95 miles (16,778.90 km) SSERichards 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
1110,414.65 miles (16,760.71 km) SELesobeng Airport (LES)Lesobeng, LesothoView Lesobeng Airport on a map Set LES as destination Airport Set LES as destination Airport Get more information about Lesobeng Airport
1210,413.17 miles (16,758.33 km) SESemonkong Airport (SOK)Semonkong, LesothoView Semonkong Airport on a map Set SOK as destination Airport Set SOK as destination Airport Get more information about Semonkong Airport
1310,403.14 miles (16,742.18 km) SECape Town International Airport (CPT)Cape Town, South AfricaView Cape Town International Airport on a map Set CPT as destination Airport Set CPT as destination Airport Get more information about Cape Town International Airport
1410,400.12 miles (16,737.33 km) SEMokhotlong Airport (MKH)Mokhotlong, LesothoView Mokhotlong Airport on a map Set MKH as destination Airport Set MKH as destination Airport Get more information about Mokhotlong Airport
1510,391.75 miles (16,723.87 km) SEMafeteng Airport (MFC)Mafeteng, LesothoView Mafeteng Airport on a map Set MFC as destination Airport Set MFC as destination Airport Get more information about Mafeteng Airport