The flight distance from Unalaska Airport (DUT) in Unalaska, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 3,144 kilometers (1,954 miles / 1,698 nautical miles). The estimated flight time for this route is approximately 5h, flying east at a heading of 85°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is a domestic route within United States. Both airports operate in the same country, which may simplify travel requirements and documentation. Despite being a domestic route, there is a 1-hour time difference between the two cities.

Time zone information: When it's 05:52 in Unalaska, it's 06:52 in Seattle.

The return flight from Seattle (SEA) to Unalaska (DUT) follows a heading of 300° (west 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 Unalaska Airport (DUT) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.