Nonstop flight route between Washington, D.C. / Virginia, United States and SeaTac (near Seattle and Tacoma), Washington, United States:
Departure Airport:
(38°56'39"N by 77°27'20"W)
Arrival Airport:
(47°26'56"N by 122°18'33"W)
Distance from IAD to SEA:
2,300.11 miles (3,701.65 km)
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- About this route
- IAD Airport Information
- SEA Airport Information
- Facts about IAD
- Facts about SEA
- Map of Nearest Airports to IAD
- List of Nearest Airports to IAD
- Map of Furthest Airports from IAD
- List of Furthest Airports from IAD
- Map of Nearest Airports to SEA
- List of Nearest Airports to SEA
- Map of Furthest Airports from SEA
- List of Furthest Airports from SEA
About this route:
A direct, nonstop flight between Washington Dulles International Airport (IAD), Washington, D.C. / Virginia, United States and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 2,300 miles (or 3,702 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 Washington Dulles International Airport and Seattle–Tacoma International Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | IAD / KIAD |
| Airport Name: | Washington Dulles International Airport |
| Location: | Washington, D.C. / Virginia, United States |
| GPS Coordinates: | 38°56'39"N by 77°27'20"W |
| Area Served: | Washington metropolitan area |
| Airport Type: | Public |
| Elevation: | 313 feet (95 meters) |
| # of Runways: | 5 |
| View all routes: | Routes from IAD |
| More Information: | IAD Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SEA / KSEA |
| Airport Names: |
|
| Location: | SeaTac (near Seattle and Tacoma), Washington, United States |
| GPS Coordinates: | 47°26'56"N by 122°18'33"W |
| Area Served: | Seattle; Tacoma, Washington, US |
| Airport Type: | Public |
| Elevation: | 433 feet (132 meters) |
| # of Runways: | 3 |
| View all routes: | Routes from SEA |
| More Information: | SEA Maps & Info |
Facts about Washington Dulles International Airport (IAD):
- In September 2009, a 121,700 square feet central Transportation Security Administration checkpoint was added on a new security mezzanine level of the main terminal.
- Washington Dulles International Airport (IAD) has 5 runways.
- The closest airport to Washington Dulles International Airport (IAD) is Leesburg Executive Airport (JYO), which is located only 11 miles (17 kilometers) NNW of IAD.
- The civil engineering firm Ammann and Whitney was named lead contractor.
- Conceived in early planning sessions in 1959, Dulles is one of the few remaining airports to use the mobile lounge for boarding and disembarkation from aircraft, and to transfer passengers between the midfield concourses and to and from the main terminal building.
- Loudoun County Transit provides a bus service which runs from the Dulles Town Center shopping center, to the airport, then to the Steven F.
- The furthest airport from Washington Dulles International Airport (IAD) is Margaret River Airport (MGV), which is located 11,659 miles (18,763 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Washington Dulles International Airport's relatively low elevation of 313 feet, planes can take off or land at Washington Dulles International 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 Seattle–Tacoma International Airport (SEA):
- The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
- Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma International 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.
- Seattle–Tacoma International Airport (SEA) has 3 runways.
- Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
- The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.
- The airport was constructed by the Port of Seattle in 1944 to serve civilians of the region, after the U.S.
- The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.
- In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
- A recurring problem at the airport is misidentification of the westernmost taxiway, Taxiway Tango, as a runway.
- Seattle's Central Link light-rail line serves the airport at the SeaTac/Airport Station, which opened on December 19, 2009.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10.73 miles (17.26 km) NNW | Leesburg Executive Airport (JYO) | Leesburg, Virginia, United States |     |
| 2 | 15.74 miles (25.34 km) SSW | Manassas Regional Airport (HEF) | Manassas, Virginia, United States | |
| 3 | 15.74 miles (25.34 km) SSW | Manassas Regional Airport (MNZ) | Manassas, Virginia, United States | |
| 4 | 21.68 miles (34.89 km) SE | Davison Army Airfield (DAA) | Fort Belvoir, Virginia, United States | |
| 5 | 21.93 miles (35.30 km) NE | Montgomery County Airpark (GAI) | Gaithersburg, Maryland, United States | |
| 6 | 23.37 miles (37.60 km) ESE | Ronald Reagan Washington National Airport (DCA) | Arlington County, Virginia (near Washington, D.C.), United States | |
| 7 | 24.67 miles (39.70 km) ESE | Bolling Air Force Base (BOF) | Washington, D.C., United States | |
| 8 | 28.77 miles (46.30 km) E | College Park Airport (CGS) | College Park, Maryland, United States | |
| 9 | 32.97 miles (53.07 km) N | Frederick Municipal Airport (FDK) | Frederick, Maryland, United States | |
| 10 | 32.99 miles (53.10 km) ESE | Andrews Field (ADW) | Camp Springs, Maryland, United States | |
| 11 | 38.63 miles (62.17 km) ENE | Tipton Airport (FME) | Odenton, Maryland, United States | |
| 12 | 39.44 miles (63.47 km) WNW | Winchester Regional Airport (WGO) | Winchester, Virginia, United States | |
| 13 | 42.45 miles (68.31 km) NW | Eastern WV Regional Airport (MRB) | Martinsburg, West Virginia, United States | |
| 14 | 42.90 miles (69.05 km) W | Front Royal–Warren County Airport (FRR) | Front Royal, Virginia, United States | |
| 15 | 45.16 miles (72.68 km) ENE | Baltimore/Washington International Thurgood Marshall Airport (BWI) | between Baltimore, Maryland and Washington, D.C., United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,658.57 miles (18,762.61 km) WSW | Margaret River Airport (MGV) | Margaret River, Western Australia, Australia | |
| 2 | 11,635.22 miles (18,725.03 km) WSW | Busselton Regional Airport (BQB) | Busselton, Western Australia, Australia | |
| 3 | 11,617.39 miles (18,696.33 km) WSW | Manjimup Airport (MJP) | Manjimup, Western Australia, Australia | |
| 4 | 11,610.55 miles (18,685.33 km) WSW | Bunbury Airport (BUY) | Bunbury, Western Australia, Australia | |
| 5 | 11,563.85 miles (18,610.17 km) WSW | Rottnest Airport (RTS) | Rottnest Island, Western Australia, Australia | |
| 6 | 11,551.50 miles (18,590.29 km) WSW | Jandakot Airport (JAD) | Jandakot, Western Australia, Australia | |
| 7 | 11,550.99 miles (18,589.47 km) WSW | Albany Airport (ALH) | Albany, Western Australia, Australia | |
| 8 | 11,541.02 miles (18,573.43 km) WSW | Perth Airport (PER) | Perth, Western Australia, Australia | |
| 9 | 11,522.36 miles (18,543.39 km) WSW | Katanning Airport (KNI) | Katanning, Western Australia, Australia | |
| 10 | 11,509.73 miles (18,523.07 km) SW | Jurien Bay Airport (JUR) | Jurien Bay, Western Australia, Australia | |
| 11 | 11,449.38 miles (18,425.94 km) SW | Geraldton Airport (GET) | Geraldton, Western Australia, Australia | |
| 12 | 11,415.09 miles (18,370.76 km) SW | Morawa Airport (MWB) | Morawa, Western Australia, Australia | |
| 13 | 11,408.12 miles (18,359.54 km) SW | Kalbarri Airport (KAX) | Kalbarri, Western Australia, Australia | |
| 14 | 11,399.95 miles (18,346.40 km) SW | Mullewa Airport (MXU) | Mullewa, Western Australia, Australia | |
| 15 | 11,330.97 miles (18,235.38 km) SW | Shark Bay Airport (MJK) | Monkey Mia, Western Australia, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 5.33 miles (8.58 km) NE | Renton Municipal Airport (RNT) | Renton, Washington, United States | |
| 2 | 5.62 miles (9.04 km) N | King County International Airport (BFI) | Seattle, Washington, United States | |
| 3 | 12.51 miles (20.13 km) N | Kenmore Air Harbor Seaplane Base (LKE) | Seattle, Washington, United States | |
| 4 | 17.72 miles (28.53 km) SW | Tacoma Narrows Airport (TIW) | Tacoma, Washington, United States | |
| 5 | 21.26 miles (34.21 km) N | Kenmore Air (KEH) | Kenmore, Washington, United States | |
| 6 | 21.46 miles (34.53 km) W | Bremerton National Airport (PWT) | Bremerton, Washington, United States | |
| 7 | 22.88 miles (36.81 km) SSW | McChord Field/McChord AFB (TCM) | Tacoma, Washington, United States | |
| 8 | 28.54 miles (45.93 km) SSW | Gray Army Airfield (GRF) | Tacoma, Washington, United States | |
| 9 | 31.62 miles (50.88 km) N | Paine Field (PAE) | Everett, Washington, United States | |
| 10 | 41.96 miles (67.53 km) WSW | Sanderson Field (SHN) | Shelton, Washington, United States | |
| 11 | 43.27 miles (69.63 km) SW | Olympia Regional Airport (OLM) | Olympia, Washington, United States | |
| 12 | 47.85 miles (77.00 km) NNW | Jefferson County International AirportPort Townsend Army Airfield (TWD) | Port Townsend, Washington, United States | |
| 13 | 54.30 miles (87.39 km) ESE | Easton State Airport (ESW) | Easton, Washington, United States | |
| 14 | 57.98 miles (93.31 km) NNW | A.J. Eisenberg Airport (ODW) | Oak Harbor, Washington, United States | |
| 15 | 60.61 miles (97.54 km) NW | Sequim Valley Airport (SQV) | Sequim, Washington, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,780.57 miles (17,349.60 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 10,711.84 miles (17,239.00 km) SSE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 10,627.16 miles (17,102.72 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,597.73 miles (17,055.36 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,593.10 miles (17,047.90 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 6 | 10,590.63 miles (17,043.93 km) ESE | East London Airport (ELS) | East London, South Africa | |
| 7 | 10,572.96 miles (17,015.49 km) ESE | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 8 | 10,569.98 miles (17,010.68 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 9 | 10,560.89 miles (16,996.07 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |
| 10 | 10,557.29 miles (16,990.27 km) ESE | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 11 | 10,553.55 miles (16,984.25 km) SE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 12 | 10,549.98 miles (16,978.50 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 13 | 10,545.58 miles (16,971.42 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 14 | 10,535.73 miles (16,955.57 km) ESE | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 15 | 10,534.00 miles (16,952.79 km) ESE | Pietermaritzburg Airport (PZB) | Pietermaritzburg, South Africa | |