The flight distance from Leinster Airport (LER) in Leinster Airport, Australia to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 14,231 kilometers (8,843 miles / 7,684 nautical miles). The estimated flight time for this route is approximately 18h, flying northeast at a heading of 50°.

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 15:41 in Leinster Airport, it's 00:41 in Seattle. With a 15-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 1,199 feet between the two airports. Seattle-Tacoma International Airport sits lower than Leinster Airport.

The return flight from Seattle (SEA) to Leinster Airport (LER) follows a heading of 269° (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 Leinster Airport (LER) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.