Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Mascot (near Sydney), Australia:
Departure Airport:

Arrival Airport:

Distance from SEA to SYD:
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- About this route
- SEA Airport Information
- SYD Airport Information
- Facts about SEA
- Facts about SYD
- Map of Nearest Airports to SEA
- List of Nearest Airports to SEA
- Map of Furthest Airports from SEA
- List of Furthest Airports from SEA
- Map of Nearest Airports to SYD
- List of Nearest Airports to SYD
- Map of Furthest Airports from SYD
- List of Furthest Airports from SYD
About this route:
A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Sydney (Kingsford Smith) Airport (SYD), Mascot (near Sydney), Australia would travel a Great Circle distance of 7,750 miles (or 12,472 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 Seattle–Tacoma International Airport and Sydney (Kingsford Smith) Airport, 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 Seattle–Tacoma International Airport and Sydney (Kingsford Smith) Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SEA / KSEA |
Airport Names: |
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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 |
Arrival Airport Information:
IATA / ICAO Codes: | SYD / YSSY |
Airport Names: |
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Location: | Mascot (near Sydney), Australia |
GPS Coordinates: | 33°56'45"S by 151°10'37"E |
Area Served: | Sydney |
Operator/Owner: | Sydney Airport Corporation Limited |
Airport Type: | Public |
Elevation: | 21 feet (6 meters) |
# of Runways: | 3 |
View all routes: | Routes from SYD |
More Information: | SYD Maps & Info |
Facts about Seattle–Tacoma International Airport (SEA):
- After the death of U.S.
- The three parallel runways run nearly north–south, west of the passenger terminal, and are 8,500 to 11,900 feet long.
- Starting in the late 1980s, the Port of Seattle and a council representing local county governments considered the future of air traffic in the region and predicted that airport could reach capacity by 2000.
- In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
- Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.
- The South Satellite Terminal has reached its maximum capacity for handling international passengers in terms of immigration check stands as well as customs declaration.
- 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.
- Seattle–Tacoma International Airport (SEA) has 3 runways.
- 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.
- Citing increased landing fees and other costs due to the aforementioned work at the airport, Southwest Airlines threatened in 2005 to move to nearby Boeing Field.
- Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
- 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.
Facts about Sydney (Kingsford Smith) Airport (SYD):
- Terminal 3 is a domestic terminal, serving Qantas with QantasLink flights having moved their operations from Terminal 2 to Terminal 3 on 16 August 2013 Originally, it was home for Trans Australia Airlines.
- In March 2010, the Australian Competition and Consumer Commission released a report sharply critical of price gouging at Sydney airport, ranking it fifth out of five airports.
- In addition to being known as "Sydney (Kingsford Smith) Airport", another name for SYD is "Kingsford-Smith Airport".
- The "third runway" which the Commonwealth government commenced development of in 1989 and completed in 1994, remained controversial because of increased aircraftmovements, especially over many inner suburbs.
- On 15 April 2014, the Federal Government announced that Badgerys Creek would be Sydney's second international airport, to be known as Western Sydney Airport.
- The closest airport to Sydney (Kingsford Smith) Airport (SYD) is Bankstown Airport (BWU), which is located only 11 miles (18 kilometers) W of SYD.
- In addition to the curfew, Sydney Airport also has a cap of 80 aircraft movements per hour which cannot be exceeded, leading to increased delays during peak hours.
- Because of Sydney (Kingsford Smith) Airport's relatively low elevation of 21 feet, planes can take off or land at Sydney (Kingsford Smith) 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.
- Sydney Airport is one of the oldest continuously operated airports in the world, and the busiest airport in Australia, handling 35,630,549 passengers in 2011 and 326,686 aircraftmovements in 2013.
- Sydney (Kingsford Smith) Airport (SYD) has 3 runways.
- The furthest airport from Sydney (Kingsford Smith) Airport (SYD) is Santa Maria Airport (SMA), which is nearly antipodal to Sydney (Kingsford Smith) Airport (meaning Sydney (Kingsford Smith) Airport is almost on the exact opposite side of the Earth from Santa Maria Airport), and is located 12,144 miles (19,543 kilometers) away in Santa Maria, Portugal.