The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Union Glacier Blue-Ice Runway (UGL) in Antartica, AQ is 14,364 kilometers (8,925 miles / 7,756 nautical miles). The estimated flight time for this route is approximately 18h, flying south at a heading of 172°.

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 AQ. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 19:34 in Seattle, it's 00:34 in Antartica. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 2,029 feet between the two airports. Union Glacier Blue-Ice Runway sits higher than Seattle-Tacoma International Airport.

The return flight from Antartica (UGL) to Seattle (SEA) follows a heading of 327° (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 Seattle-Tacoma International Airport (SEA) and Union Glacier Blue-Ice Runway (UGL) detail pages, or use our flight duration calculator to compare other routes.