The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Hasanuddin International Airport (UPG) in Ujung Pandang-Celebes Island, Indonesia is 12,509 kilometers (7,773 miles / 6,754 nautical miles). The estimated flight time for this route is approximately 16h, flying west northwest at a heading of 288°.

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

Time zone information: When it's 22:23 in Seattle, it's 14:23 in Ujung Pandang-Celebes Island. 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 Ujung Pandang-Celebes Island (UPG) to Seattle (SEA) follows a heading of 40° (northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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