Nonstop flight route between SeaTac (near Seattle and Tacoma), Washington, United States and Hamilton Island, Queensland, Australia:
Departure Airport:

Arrival Airport:

Distance from SEA to HTI:
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- About this route
- SEA Airport Information
- HTI Airport Information
- Facts about SEA
- Facts about HTI
- 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 HTI
- List of Nearest Airports to HTI
- Map of Furthest Airports from HTI
- List of Furthest Airports from HTI
About this route:
A direct, nonstop flight between Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States and Great Barrier Reef Airport (HTI), Hamilton Island, Queensland, Australia would travel a Great Circle distance of 7,187 miles (or 11,567 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 Great Barrier Reef 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 Great Barrier Reef 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: | HTI / YBHM |
Airport Names: |
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Location: | Hamilton Island, Queensland, Australia |
GPS Coordinates: | 20°21'29"S by 148°57'6"E |
Operator/Owner: | Great Barrier Reef Airport Pty Ltd. |
Airport Type: | Public |
Elevation: | 15 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from HTI |
More Information: | HTI Maps & Info |
Facts about Seattle–Tacoma International Airport (SEA):
- 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.
- 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.
- 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.
- The airport is also served both by the King County Metro bus system and Sound Transit regional express buses.
- In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
- Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
- Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.
- Seattle–Tacoma International Airport (SEA) has 3 runways.
- A new control tower was built beginning in 2001 and opened November 2004, at a cost of $26 million.
- 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.
Facts about Great Barrier Reef Airport (HTI):
- The closest airport to Great Barrier Reef Airport (HTI) is Whitsunday Airport (WSY), which is located only 14 miles (22 kilometers) WNW of HTI.
- Because of Great Barrier Reef Airport's relatively low elevation of 15 feet, planes can take off or land at Great Barrier Reef 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 furthest airport from Great Barrier Reef Airport (HTI) is Agostinho Neto Airport (NTO), which is located 11,990 miles (19,297 kilometers) away in Ponta do Sol, Santo Antão, Cape Verde.
- Great Barrier Reef Airport handled 457,641 passengers last year.
- *Sydney route included from July 2009
- In addition to being known as "Great Barrier Reef Airport", another name for HTI is "Hamilton Island".
- Great Barrier Reef Airport (HTI) currently has only 1 runway.