About this route:

A direct, nonstop flight between Port Alfred Airport (AFD), Port Alfred, South Africa and Thorne Bay Seaplane Base (KTB), Thorne Bay, Alaska, United States would travel a Great Circle distance of 10,618 miles (or 17,088 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 Port Alfred Airport and Thorne Bay Seaplane Base, 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 Port Alfred Airport and Thorne Bay Seaplane Base. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

IATA / ICAO Codes: AFD / FAPA
Airport Name: Port Alfred Airport
Location: Port Alfred, South Africa
GPS Coordinates: 33°33'15"S by 26°52'46"E
Area Served: Port Alfred, Eastern Cape, South Africa
Airport Type: Public
Elevation: 272 feet (83 meters)
View all routes: Routes from AFD
More Information: AFD 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 Port Alfred Airport (AFD):

  • The closest airport to Port Alfred Airport (AFD) is East London Airport (ELS), which is located 65 miles (105 kilometers) ENE of AFD.
  • The furthest airport from Port Alfred Airport (AFD) is Princeville Airport (HPV), which is located 11,563 miles (18,610 kilometers) away in Hanalei, Hawaii, United States.
  • Because of Port Alfred Airport's relatively low elevation of 272 feet, planes can take off or land at Port Alfred 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.

Facts about Thorne Bay Seaplane Base (KTB):

  • Thorne Bay Seaplane Base has one seaplane landing area designated NW/SE with a water surface measuring 5,000 by 2,000 feet.
  • 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 (KTB) currently has only 1 runway.
  • 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.
  • 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.

Map of Nearest Airports to Port Alfred Airport:

List of Nearest Airports to Port Alfred Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
165.15 miles (104.85 km) ENEEast 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
278.75 miles (126.73 km) WSWPort Elizabeth International Airport (PLZ)Port Elizabeth, South AfricaView Port Elizabeth International Airport on a map Set PLZ as origin Airport Set PLZ as destination Airport Get more information about Port Elizabeth International Airport
3173.72 miles (279.57 km) NEMthatha Airport (UTT)Mthatha, South AfricaView Mthatha Airport on a map Set UTT as origin Airport Set UTT as destination Airport Get more information about Mthatha Airport
4260.21 miles (418.77 km) NMafeteng Airport (MFC)Mafeteng, LesothoView Mafeteng Airport on a map Set MFC as origin Airport Set MFC as destination Airport Get more information about Mafeteng Airport
5260.23 miles (418.80 km) WGeorge Airport (GRJ)George, South AfricaView George Airport on a map Set GRJ as origin Airport Set GRJ as destination Airport Get more information about George Airport
6265.94 miles (427.99 km) NNESemonkong Airport (SOK)Semonkong, LesothoView Semonkong Airport on a map Set SOK as origin Airport Set SOK as destination Airport Get more information about Semonkong Airport
7273.77 miles (440.59 km) NNELebakeng Airport (LEF)Lebakeng, LesothoView Lebakeng Airport on a map Set LEF as origin Airport Set LEF as destination Airport Get more information about Lebakeng Airport
8275.03 miles (442.62 km) NEMargate 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
9276.45 miles (444.91 km) NNELesobeng Airport (LES)Lesobeng, LesothoView Lesobeng Airport on a map Set LES as origin Airport Set LES as destination Airport Get more information about Lesobeng Airport
10285.49 miles (459.45 km) NMoshoeshoe I International Airport (MSU)Maseru, LesothoView Moshoeshoe I International Airport on a map Set MSU as origin Airport Set MSU as destination Airport Get more information about Moshoeshoe I International Airport
11310.04 miles (498.96 km) NBloemfontein International Airport (BFN)Bloemfontein, Free State, South AfricaView Bloemfontein International Airport on a map Set BFN as origin Airport Set BFN as destination Airport Get more information about Bloemfontein International Airport
12322.25 miles (518.62 km) NNEMokhotlong Airport (MKH)Mokhotlong, LesothoView Mokhotlong Airport on a map Set MKH as origin Airport Set MKH as destination Airport Get more information about Mokhotlong Airport
13331.95 miles (534.23 km) NNELeribe Airport (LRB)Leribe, LesothoView Leribe Airport on a map Set LRB as origin Airport Set LRB as destination Airport Get more information about Leribe Airport
14340.19 miles (547.48 km) NEPietermaritzburg Airport (PZB)Pietermaritzburg, South AfricaView Pietermaritzburg Airport on a map Set PZB as origin Airport Set PZB as destination Airport Get more information about Pietermaritzburg Airport
15351.36 miles (565.46 km) NNWKimberley Airport (KIM)Kimberley, South AfricaView Kimberley Airport on a map Set KIM as origin Airport Set KIM as destination Airport Get more information about Kimberley Airport

Map of Furthest Airports from Port Alfred Airport:

List of Furthest Airports from Port Alfred Airport:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
111,563.45 miles (18,609.52 km) NNEPrinceville Airport (HPV)Hanalei, Hawaii, United StatesView Princeville Airport on a map Set HPV as origin Airport Set HPV as destination Airport Get more information about Princeville Airport
211,553.29 miles (18,593.17 km) NNEDillingham Airfield (HDH)Mokuleia, Hawaii, United StatesView Dillingham Airfield on a map Set HDH as origin Airport Set HDH as destination Airport Get more information about Dillingham Airfield
311,552.04 miles (18,591.16 km) NNEKalaupapa Airport (LUP)Kalaupapa, Hawaii, United StatesView Kalaupapa Airport on a map Set LUP as origin Airport Set LUP as destination Airport Get more information about Kalaupapa Airport
411,551.61 miles (18,590.47 km) NNELihue Airport (LIH)Lihue, Hawaii, United StatesView Lihue Airport on a map Set LIH as origin Airport Set LIH as destination Airport Get more information about Lihue Airport
511,550.42 miles (18,588.55 km) NNEWheeler AAF (HHI)Wahiawa, Hawaii, United StatesView Wheeler AAF on a map Set HHI as origin Airport Set HHI as destination Airport Get more information about Wheeler AAF
611,546.12 miles (18,581.63 km) NNEMolokai 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
711,542.55 miles (18,575.88 km) NNEPMRF Barking Sands (BKH)Kekaha, Hawaii, United StatesView PMRF Barking Sands on a map Set BKH as origin Airport Set BKH as destination Airport Get more information about PMRF Barking Sands
811,541.92 miles (18,574.88 km) NNEHonolulu International Airport (HNL)Honolulu, Hawaii, United StatesView Honolulu International Airport on a map Set HNL as origin Airport Set HNL as destination Airport Get more information about Honolulu International Airport
911,541.92 miles (18,574.88 km) NNEHickam Field (HIK)Honolulu, Hawaii, United StatesView Hickam Field on a map Set HIK as origin Airport Set HIK as destination Airport Get more information about Hickam Field
1011,540.08 miles (18,571.91 km) NNEKapalua 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
1111,539.63 miles (18,571.20 km) NNEPort Allen Airport (PAK)Hanapepe, Hawaii, United StatesView Port Allen Airport on a map Set PAK as origin Airport Set PAK as destination Airport Get more information about Port Allen Airport
1211,539.21 miles (18,570.52 km) NNEKahului 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
1311,538.17 miles (18,568.85 km) NNEKalaeloa Airport (NAX)Kapolei, Hawaii, United StatesView Kalaeloa Airport on a map Set NAX as origin Airport Set NAX as destination Airport Get more information about Kalaeloa Airport
1411,537.62 miles (18,567.96 km) NNEHana 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
1511,523.91 miles (18,545.89 km) NNELanai 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

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