The flight distance from Bulgan Sum Airport (HBU) in Bulgan Sum Airport, Mongolia to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 9,102 kilometers (5,656 miles / 4,915 nautical miles). The estimated flight time for this route is approximately 12h, flying north northeast at a heading of 22°.

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 Mongolia 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 15:51 in Bulgan Sum Airport, it's 00:51 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 3,489 feet between the two airports. Seattle-Tacoma International Airport sits lower than Bulgan Sum Airport.

The return flight from Seattle (SEA) to Bulgan Sum Airport (HBU) follows a heading of 337° (north northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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