The flight distance from St Helens Airport (HLS) in St Helens Airport, Australia to Washington Dulles International Airport (IAD) in Washington, United States is 16,158 kilometers (10,040 miles / 8,725 nautical miles). The estimated flight time for this route is approximately 20h, flying east northeast at a heading of 79°.

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 19:46 in St Helens Airport, it's 05:46 in Washington. With a 14-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 Washington (IAD) to St Helens Airport (HLS) follows a heading of 251° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the St Helens Airport (HLS) and Washington Dulles International Airport (IAD) detail pages, or use our flight duration calculator to compare other routes.