The flight distance from Key West Nas (Boca Chica Field) Airport (NQX) in Key West, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 4,377 kilometers (2,720 miles / 2,363 nautical miles). The estimated flight time for this route is approximately 6h, flying northwest at a heading of 316°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

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 3-hour time difference between the two cities.

Time zone information: When it's 21:28 in Key West, it's 18:28 in Seattle. The 3-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Seattle (SEA) to Key West (NQX) follows a heading of 111° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Key West Nas (Boca Chica Field) Airport (NQX) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.