The flight distance from Sidney-Richland Regional Airport (SDY) in Sidney, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 1,356 kilometers (843 miles / 732 nautical miles). The estimated flight time for this route is approximately 3h, flying west at a heading of 276°.

This is a short-haul route typically served by narrow-body aircraft such as the Boeing 737 or Airbus A320 family. In-flight service is usually limited to drinks and light snacks.

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 22:35 in Sidney, it's 21:35 in Seattle.

There is a significant elevation difference of 1,553 feet between the two airports. Seattle-Tacoma International Airport sits lower than Sidney-Richland Regional Airport.

The return flight from Seattle (SEA) to Sidney (SDY) follows a heading of 82° (east). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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