The flight distance from Castle Airport (MER) in Atwater, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 1,126 kilometers (700 miles / 608 nautical miles). The estimated flight time for this route is approximately 2h, flying north at a heading of 353°.

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.

Time zone information: When it's 01:00 in Atwater, it's 01:00 in Seattle.

The return flight from Seattle (SEA) to Atwater (MER) follows a heading of 172° (south). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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