The flight distance from Alice Springs Airport (ASP) in Alice Springs, Australia to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 12,945 kilometers (8,044 miles / 6,990 nautical miles). The estimated flight time for this route is approximately 16h, flying northeast at a heading of 47°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Australia with United States. It is an intercontinental flight between Oceania and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 15:15 in Alice Springs, it's 21:45 in Seattle. With a 17.5-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 1,357 feet between the two airports. Seattle-Tacoma International Airport sits lower than Alice Springs Airport.

The return flight from Seattle (SEA) to Alice Springs (ASP) follows a heading of 263° (west). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Alice Springs Airport (ASP) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.