Nonstop flight route between Kelso, Washington, United States and Waterfall, Alaska, United States:
Departure Airport:
(46°7'5"N by 122°53'53"W)
Arrival Airport:
(55°17'47"N by 133°14'35"W)
Distance from KLS to KWF:
777.38 miles (1,251.07 km)
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- About this route
- KLS Airport Information
- KWF Airport Information
- Facts about KLS
- Facts about KWF
- Map of Nearest Airports to KLS
- List of Nearest Airports to KLS
- Map of Furthest Airports from KLS
- List of Furthest Airports from KLS
- Map of Nearest Airports to KWF
- List of Nearest Airports to KWF
- Map of Furthest Airports from KWF
- List of Furthest Airports from KWF
About this route:
A direct, nonstop flight between Southwest Washington Regional Airport (KLS), Kelso, Washington, United States and Waterfall Seaplane Base (KWF), Waterfall, Alaska, United States would travel a Great Circle distance of 777 miles (or 1,251 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 Southwest Washington Regional Airport and Waterfall Seaplane Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | KLS / KKLS |
| Airport Name: | Southwest Washington Regional Airport |
| Location: | Kelso, Washington, United States |
| GPS Coordinates: | 46°7'5"N by 122°53'53"W |
| Area Served: | Longview-Kelso Metropolitan Area |
| Operator/Owner: | City of Kelso |
| Airport Type: | Public |
| Elevation: | 20 feet (6 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from KLS |
| More Information: | KLS Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | KWF / |
| Airport Name: | Waterfall Seaplane Base |
| Location: | Waterfall, Alaska, United States |
| GPS Coordinates: | 55°17'47"N by 133°14'35"W |
| Area Served: | Waterfall, Alaska |
| Operator/Owner: | Waterfall Cannery Resort |
| Airport Type: | Public |
| Elevation: | 0 feet (0 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from KWF |
| More Information: | KWF Maps & Info |
Facts about Southwest Washington Regional Airport (KLS):
- Because of Southwest Washington Regional Airport's relatively low elevation of 20 feet, planes can take off or land at Southwest Washington 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 Southwest Washington Regional Airport (KLS) is South Lewis County Airport (TDO), which is located 25 miles (41 kilometers) N of KLS.
- The furthest airport from Southwest Washington Regional Airport (KLS) is Tôlanaro Airport (FTU), which is located 10,876 miles (17,503 kilometers) away in Tôlanaro, Madagascar.
- Southwest Washington Regional Airport covers an area of 110 acres at an elevation of 20 feet above mean sea level.
- Southwest Washington Regional Airport (KLS) currently has only 1 runway.
- Southwest Washington Regional Airport is a city-owned public-use airport located two nautical miles southeast of the central business district of Kelso, in Cowlitz County, Washington, United States.
- The airport has one passenger terminal consisting of 12 gates.
Facts about Waterfall Seaplane Base (KWF):
- Waterfall Seaplane Base (KWF) currently has only 1 runway.
- The closest airport to Waterfall Seaplane Base (KWF) is Craig Seaplane Base (CGA), which is located only 13 miles (21 kilometers) NNE of KWF.
- The furthest airport from Waterfall Seaplane Base (KWF) is Port Alfred Airport (AFD), which is located 10,657 miles (17,150 kilometers) away in Port Alfred, South Africa.
- Because of Waterfall Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Waterfall 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 25.20 miles (40.56 km) N | South Lewis County Airport (TDO) | Toledo, Washington, United States |     |
| 2 | 39.34 miles (63.31 km) SSE | Portland International Airport (PDX) | Portland, Oregon, United States | |
| 3 | 39.99 miles (64.36 km) S | Portland-Hillsboro Airport (HIO) | Hillsboro / Portland, Oregon, United States | |
| 4 | 46.01 miles (74.04 km) SSE | Portland-Troutdale Airport (TTD) | Portland, Oregon, United States | |
| 5 | 47.01 miles (75.66 km) W | Astoria Regional Airport (AST) | Astoria, Oregon, United States | |
| 6 | 57.72 miles (92.89 km) ESE | Cascade Locks State Airport (CZK) | Cascade Locks, Oregon, United States | |
| 7 | 58.83 miles (94.67 km) N | Olympia Regional Airport (OLM) | Olympia, Washington, United States | |
| 8 | 68.10 miles (109.59 km) NNE | Gray Army Airfield (GRF) | Tacoma, Washington, United States | |
| 9 | 73.24 miles (117.88 km) NNE | McChord Field/McChord AFB (TCM) | Tacoma, Washington, United States | |
| 10 | 76.87 miles (123.70 km) NW | Bowerman Airport (HQM) | Hoquiam, Washington, United States | |
| 11 | 77.98 miles (125.49 km) N | Sanderson Field (SHN) | Shelton, Washington, United States | |
| 12 | 80.89 miles (130.19 km) N | Tacoma Narrows Airport (TIW) | Tacoma, Washington, United States | |
| 13 | 81.64 miles (131.39 km) SW | Pacific City State Airport (PFC) | Pacific City, Oregon, United States | |
| 14 | 83.66 miles (134.64 km) S | McNary Field (SLE) | Salem, Oregon, United States | |
| 15 | 90.15 miles (145.08 km) ESE | Columbia Gorge Regional Airport (DLS) | The Dalles, Oregon, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,875.78 miles (17,502.83 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,805.79 miles (17,390.18 km) SSE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 10,720.93 miles (17,253.62 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,691.41 miles (17,206.11 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,661.62 miles (17,158.17 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 10,660.63 miles (17,156.58 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 7 | 10,649.46 miles (17,138.61 km) ESE | East London Airport (ELS) | East London, South Africa | |
| 8 | 10,645.98 miles (17,133.01 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 9 | 10,641.31 miles (17,125.48 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 10 | 10,631.92 miles (17,110.37 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 11 | 10,629.07 miles (17,105.79 km) ESE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 12 | 10,627.57 miles (17,103.37 km) ESE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 13 | 10,620.73 miles (17,092.37 km) ESE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 14 | 10,605.30 miles (17,067.54 km) SSE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 15 | 10,603.83 miles (17,065.16 km) ESE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 13.16 miles (21.17 km) NNE | Craig Seaplane Base (CGA) | Craig, Alaska, United States | |
| 2 | 17.49 miles (28.14 km) ESE | Hydaburg Seaplane Base (HYG) | Hydaburg, Alaska, United States | |
| 3 | 20.61 miles (33.17 km) NNE | Klawock Airport (KLW) | Klawock, Alaska, United States | |
| 4 | 27.77 miles (44.70 km) ENE | Hollis Clark Bay Seaplane Base (HYL) | Hollis, Alaska, United States | |
| 5 | 38.24 miles (61.54 km) N | Naukati Bay Seaplane Base (WNC) | Tuxekan Island, Alaska, United States | |
| 6 | 38.70 miles (62.28 km) NE | Thorne Bay Seaplane Base (KTB) | Thorne Bay, Alaska, United States | |
| 7 | 44.40 miles (71.45 km) N | Tokeen Seaplane Base (TKI) | Tokeen, Alaska, United States | |
| 8 | 52.13 miles (83.90 km) NNE | Coffman Cove Seaplane Base (KCC) | Coffman Cove, Alaska, United States | |
| 9 | 56.85 miles (91.50 km) N | North Whale Seaplane Base (WWP) | North Whale Pass, Alaska, United States | |
| 10 | 60.36 miles (97.14 km) E | Ketchikan International Airport (KTN) | Ketchikan, Alaska, United States | |
| 11 | 62.20 miles (100.10 km) E | Ketchikan Harbor Seaplane Base (WFB) | Ketchikan, Alaska, United States | |
| 12 | 66.63 miles (107.23 km) E | Metlakatla Seaplane Base (MTM) | Metlakatla, Annette Island, Alaska, United States | |
| 13 | 68.24 miles (109.82 km) ESE | Annette Island Airport (ANN) | Annette Island, Alaska, United States | |
| 14 | 72.75 miles (117.07 km) N | Port Protection Seaplane Base (PPV) | Port Protection, Alaska, United States | |
| 15 | 74.40 miles (119.74 km) NNW | Point Baker Seaplane Base (KPB) | Point Baker, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,656.69 miles (17,150.25 km) SE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 2 | 10,649.73 miles (17,139.04 km) SE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 3 | 10,648.00 miles (17,136.25 km) SE | East London Airport (ELS) | East London, South Africa | |
| 4 | 10,574.28 miles (17,017.62 km) SE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 5 | 10,566.86 miles (17,005.68 km) SSE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 6 | 10,559.79 miles (16,994.29 km) SE | George Airport (GRJ) | George, South Africa | |
| 7 | 10,501.66 miles (16,900.74 km) SSE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 8 | 10,489.40 miles (16,881.02 km) SSE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |
| 9 | 10,468.04 miles (16,846.63 km) SE | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 10 | 10,462.85 miles (16,838.29 km) SSE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 11 | 10,452.70 miles (16,821.95 km) SE | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 12 | 10,451.29 miles (16,819.68 km) SE | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,441.39 miles (16,803.74 km) SE | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 14 | 10,437.97 miles (16,798.24 km) SSE | Mokhotlong Airport (MKH) | Mokhotlong, Lesotho | |
| 15 | 10,430.02 miles (16,785.44 km) SE | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |