The flight distance from Dupage Airport (DPA) in Chicago/West Chicago, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 2,739 kilometers (1,702 miles / 1,479 nautical miles). The estimated flight time for this route is approximately 4h, flying west northwest at a heading of 295°.

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 2-hour time difference between the two cities.

Time zone information: When it's 00:40 in Chicago/West Chicago, it's 22:40 in Seattle.

The return flight from Seattle (SEA) to Chicago/West Chicago (DPA) follows a heading of 90° (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 Dupage Airport (DPA) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.