About this route:

A direct, nonstop flight between Roberts International Airport Roberts Field (ROB), Monrovia, Liberia and Port Alexander Seaplane Base (PTD), Port Alexander, Alaska, United States would travel a Great Circle distance of 7,100 miles (or 11,426 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 Roberts International Airport Roberts Field and Port Alexander 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 Roberts International Airport Roberts Field and Port Alexander 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: ROB / GLRB
Airport Name: Roberts International Airport Roberts Field
Location: Monrovia, Liberia
GPS Coordinates: 6°14'2"N by 10°21'43"W
Area Served: Monrovia, Liberia
Airport Type: Public
Elevation: 31 feet (9 meters)
# of Runways: 1
View all routes: Routes from ROB
More Information: ROB Maps & Info

Arrival Airport Information:

IATA / ICAO Codes: PTD / PAAP
Airport Names:
  1. Port Alexander Seaplane Base
  2. AHP
Location: Port Alexander, Alaska, United States
GPS Coordinates: 56°14'48"N by 134°38'53"W
Area Served: Port Alexander, Alaska
Operator/Owner: Alaska DOT&PF - Southeast Region
Airport Type: Public
Elevation: 0 feet (0 meters)
# of Runways: 1
View all routes: Routes from PTD
More Information: PTD Maps & Info

Facts about Roberts International Airport Roberts Field (ROB):

  • The closest airport to Roberts International Airport Roberts Field (ROB) is Spriggs Payne Airport (MLW), which is located 27 miles (44 kilometers) W of ROB.
  • Roberts International Airport Roberts Field handled 133,656 passengers last year.
  • On 5 September 2010, Delta launched once weekly flights between Atlanta and Monrovia.
  • The story of Robertsfield is consistently intertwined with the history of Pan American World Airways.
  • Roberts International Airport Roberts Field (ROB) currently has only 1 runway.
  • The furthest airport from Roberts International Airport Roberts Field (ROB) is Nauru International Airport (INU), which is nearly antipodal to Roberts International Airport Roberts Field (meaning Roberts International Airport Roberts Field is almost on the exact opposite side of the Earth from Nauru International Airport), and is located 12,001 miles (19,314 kilometers) away in Yaren, Nauru.
  • It was announced in October 2008 that U.S.
  • Roberts International Airport, informally known as Robertsfield, is an international airport in the West African nation of Liberia.
  • However, just one week prior to the inaugural flight, Delta announced that its planned launch would be suspended indefinitely.
  • At one point in the past, Roberts Airport was listed as an alternative landing site for NASA's Space Shuttle.
  • Because of Roberts International Airport Roberts Field's relatively low elevation of 31 feet, planes can take off or land at Roberts International Airport Roberts Field 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 Port Alexander Seaplane Base (PTD):

  • The closest airport to Port Alexander Seaplane Base (PTD) is Point Baker Seaplane Base (KPB), which is located 40 miles (64 kilometers) E of PTD.
  • Port Alexander Seaplane Base (PTD) currently has only 1 runway.
  • In addition to being known as "Port Alexander Seaplane Base", another name for PTD is "AHP".
  • Because of Port Alexander Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Port Alexander 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 furthest airport from Port Alexander Seaplane Base (PTD) is Port Alfred Airport (AFD), which is located 10,640 miles (17,123 kilometers) away in Port Alfred, South Africa.

Map of Nearest Airports to Roberts International Airport Roberts Field:

List of Nearest Airports to Roberts International Airport Roberts Field:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
127.49 miles (44.24 km) WSpriggs Payne Airport (MLW)Monrovia, LiberiaView Spriggs Payne Airport on a map Set MLW as origin Airport Set MLW as destination Airport Get more information about Spriggs Payne Airport
230.90 miles (49.73 km) SEBuchanan Airport (UCN)Buchanan, LiberiaView Buchanan Airport on a map Set UCN as origin Airport Set UCN as destination Airport Get more information about Buchanan Airport
3121.67 miles (195.81 km) SEGreenville/Sinoe Airport (SNI)Greenville, LiberiaView Greenville/Sinoe Airport on a map Set SNI as origin Airport Set SNI as destination Airport Get more information about Greenville/Sinoe Airport
4127.68 miles (205.48 km) NNWKenema Airport (KEN)Kenema, Sierra LeoneView Kenema Airport on a map Set KEN as origin Airport Set KEN as destination Airport Get more information about Kenema Airport
5146.66 miles (236.02 km) NFoya Airport (FOY)Foya, LiberiaView Foya Airport on a map Set FOY as origin Airport Set FOY as destination Airport Get more information about Foya Airport
6149.81 miles (241.09 km) NENimba Airport (NIA)Nimba, LiberiaView Nimba Airport on a map Set NIA as origin Airport Set NIA as destination Airport Get more information about Nimba Airport
7150.29 miles (241.88 km) NNEVoinjama Airport (VOI)Voinjama, LiberiaView Voinjama Airport on a map Set VOI as origin Airport Set VOI as destination Airport Get more information about Voinjama Airport
8152.20 miles (244.95 km) NWBo Airport (KBS)Bo, Sierra LeoneView Bo Airport on a map Set KBS as origin Airport Set KBS as destination Airport Get more information about Bo Airport
9153.26 miles (246.65 km) ETchien Airport (THC)Tchien, LiberiaView Tchien Airport on a map Set THC as origin Airport Set THC as destination Airport Get more information about Tchien Airport
10157.67 miles (253.74 km) NENzérékoré Airport (NZE)N'zerekore, GuineaView Nzérékoré Airport on a map Set NZE as origin Airport Set NZE as destination Airport Get more information about Nzérékoré Airport
11170.28 miles (274.04 km) NNEMacenta Airport (MCA)Macenta, GuineaView Macenta Airport on a map Set MCA as origin Airport Set MCA as destination Airport Get more information about Macenta Airport
12171.10 miles (275.36 km) NNWYengema Airport (WYE)Yengema, Kono District, Sierra LeoneView Yengema Airport on a map Set WYE as origin Airport Set WYE as destination Airport Get more information about Yengema Airport
13171.25 miles (275.60 km) SESasstown Airport (SAZ)Sasstown, LiberiaView Sasstown Airport on a map Set SAZ as origin Airport Set SAZ as destination Airport Get more information about Sasstown Airport
14172.96 miles (278.36 km) WNWSherbro International Airport (BTE)Bonthe, Sierra LeoneView Sherbro International Airport on a map Set BTE as origin Airport Set BTE as destination Airport Get more information about Sherbro International Airport
15176.07 miles (283.35 km) NWGbangbatok Airport (GBK)Gbangbatok, Sierra LeoneView Gbangbatok Airport on a map Set GBK as origin Airport Set GBK as destination Airport Get more information about Gbangbatok Airport

Map of Furthest Airports from Roberts International Airport Roberts Field:

List of Furthest Airports from Roberts International Airport Roberts Field:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
112,001.48 miles (19,314.47 km) SSENauru International Airport (INU)Yaren, NauruView Nauru International Airport on a map Set INU as origin Airport Set INU as destination Airport Get more information about Nauru International Airport
211,914.55 miles (19,174.55 km) SSWAranuka Airport (AAK)Aranuka, KiribatiView Aranuka Airport on a map Set AAK as origin Airport Set AAK as destination Airport Get more information about Aranuka Airport
311,906.85 miles (19,162.17 km) SSEMota Lava Airport (MTV)Mota Lava, VanuatuView Mota Lava Airport on a map Set MTV as origin Airport Set MTV as destination Airport Get more information about Mota Lava Airport
411,891.43 miles (19,137.35 km) SSEVanua Lava Airport (SLH)Sola, Vanua Lava, Torba Province, VanuatuView Vanua Lava Airport on a map Set SLH as origin Airport Set SLH as destination Airport Get more information about Vanua Lava Airport
511,889.60 miles (19,134.42 km) SSWAbemama Atoll Airport (AEA)Abemama Atoll, KiribatiView Abemama Atoll Airport on a map Set AEA as origin Airport Set AEA as destination Airport Get more information about Abemama Atoll Airport
611,883.66 miles (19,124.84 km) WSWArorae Island Airport (AIS)Arorae Island, KiribatiView Arorae Island Airport on a map Set AIS as origin Airport Set AIS as destination Airport Get more information about Arorae Island Airport
711,883.30 miles (19,124.28 km) SWBeru Island Airport (BEZ)Beru, KiribatiView Beru Island Airport on a map Set BEZ as origin Airport Set BEZ as destination Airport Get more information about Beru Island Airport
811,867.83 miles (19,099.37 km) SSEGaua Airport (ZGU)Gaua, Torba, VanuatuView Gaua Airport on a map Set ZGU as origin Airport Set ZGU as destination Airport Get more information about Gaua Airport
911,857.61 miles (19,082.92 km) SSWBonriki International Airport (TRW)Tarawa, KiribatiView Bonriki International Airport on a map Set TRW as origin Airport Set TRW as destination Airport Get more information about Bonriki International Airport
1011,856.27 miles (19,080.78 km) ESEUlawa Airport (RNA)Arona, Ulawa Island, Solomon IslandsView Ulawa Airport on a map Set RNA as origin Airport Set RNA as destination Airport Get more information about Ulawa Airport
1111,834.35 miles (19,045.50 km) SSWAbaiang Atoll Airport (ABF)Abaiang, KiribatiView Abaiang Atoll Airport on a map Set ABF as origin Airport Set ABF as destination Airport Get more information about Abaiang Atoll Airport
1211,832.96 miles (19,043.25 km) ESEKirakira Airport (IRA)Kirakira, Makira Island, Solomon IslandsView Kirakira Airport on a map Set IRA as origin Airport Set IRA as destination Airport Get more information about Kirakira Airport
1311,822.17 miles (19,025.89 km) SMaewo-Naone Airport (MWF)Maewo, VanuatuView Maewo-Naone Airport on a map Set MWF as origin Airport Set MWF as destination Airport Get more information about Maewo-Naone Airport
1411,818.50 miles (19,019.99 km) ESEUru Harbour Airport (ATD)Atoifi, Malaita, Solomon IslandsView Uru Harbour Airport on a map Set ATD as origin Airport Set ATD as destination Airport Get more information about Uru Harbour Airport
1511,812.06 miles (19,009.63 km) SSWMarakei Airport (MZK)Marakei, KiribatiView Marakei Airport on a map Set MZK as origin Airport Set MZK as destination Airport Get more information about Marakei Airport

Map of Nearest Airports to Port Alexander Seaplane Base:

List of Nearest Airports to Port Alexander Seaplane Base:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
139.98 miles (64.34 km) EPoint Baker Seaplane Base (KPB)Point Baker, Alaska, United StatesView Point Baker Seaplane Base on a map Set KPB as destination Airport Set KPB as destination Airport Get more information about Point Baker Seaplane Base
240.21 miles (64.71 km) EPort 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
355.24 miles (88.91 km) ESETokeen 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
456.78 miles (91.38 km) NNEKake Airport (KAE)Kake, Alaska, United StatesView Kake Airport on a map Set KAE as destination Airport Set KAE as destination Airport Get more information about Kake Airport
559.38 miles (95.57 km) ENorth 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
661.29 miles (98.64 km) ESENaukati 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
761.58 miles (99.10 km) NNWSitka Rocky Gutierrez Airport (SIT)Sitka, Alaska, United StatesView Sitka Rocky Gutierrez Airport on a map Set SIT as destination Airport Set SIT as destination Airport Get more information about Sitka Rocky Gutierrez Airport
871.67 miles (115.35 km) ESECoffman 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
975.33 miles (121.23 km) ENEPetersburg James A. Johnson Airport (PSG)Petersburg, Alaska, United StatesView Petersburg James A. Johnson Airport on a map Set PSG as destination Airport Set PSG as destination Airport Get more information about Petersburg James A. Johnson Airport
1076.38 miles (122.92 km) SEKlawock 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
1178.74 miles (126.71 km) SECraig 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
1285.40 miles (137.44 km) SEWaterfall 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
1386.86 miles (139.79 km) NAngoon Seaplane Base (AGN)Angoon, Alaska, United StatesView Angoon Seaplane Base on a map Set AGN as destination Airport Set AGN as destination Airport Get more information about Angoon Seaplane Base
1488.33 miles (142.16 km) NChatham Seaplane Base (CYM)Chatham, Alaska, United StatesView Chatham Seaplane Base on a map Set CYM as destination Airport Set CYM as destination Airport Get more information about Chatham Seaplane Base
1588.72 miles (142.78 km) ENEWrangell 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

Map of Furthest Airports from Port Alexander Seaplane Base:

List of Furthest Airports from Port Alexander Seaplane Base:

RankDistance & DirectionAirport Name & IATA CodeAirport LocationFurther Actions
110,639.80 miles (17,123.05 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
210,636.65 miles (17,117.99 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
310,628.00 miles (17,104.07 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
410,554.56 miles (16,985.87 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
510,550.30 miles (16,979.02 km) SSEMthatha 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
610,537.99 miles (16,959.21 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
710,469.73 miles (16,849.35 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
810,459.21 miles (16,832.43 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
910,444.62 miles (16,808.94 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
1010,442.29 miles (16,805.19 km) SSELebakeng 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
1110,427.82 miles (16,781.91 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
1210,427.52 miles (16,781.43 km) SSELesobeng 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
1310,426.91 miles (16,780.44 km) SSESemonkong 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
1410,410.61 miles (16,754.20 km) SSEMokhotlong 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
1510,407.54 miles (16,749.28 km) SSEMafeteng 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