The flight distance from El Tari Airport (KOE) in Kupang-Timor Island, Indonesia to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 12,636 kilometers (7,852 miles / 6,823 nautical miles). The estimated flight time for this route is approximately 16h, flying northeast at a heading of 42°.

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 Indonesia with United States. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 10:07 in Kupang-Timor Island, it's 18:07 in Seattle. With a 16-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Seattle (SEA) to Kupang-Timor Island (KOE) follows a heading of 281° (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 El Tari Airport (KOE) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.