The flight distance from Seattle-Tacoma International Airport (SEA) in Seattle, United States to Siguanea Airport (SZJ) in Isla de la Juventud, Cuba is 4,530 kilometers (2,815 miles / 2,446 nautical miles). The estimated flight time for this route is approximately 6h, flying east southeast at a heading of 115°.

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 an international route connecting United States with Cuba. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 18:15 in Seattle, it's 21:15 in Isla de la Juventud. The 3-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Isla de la Juventud (SZJ) to Seattle (SEA) follows a heading of 319° (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 Seattle-Tacoma International Airport (SEA) and Siguanea Airport (SZJ) detail pages, or use our flight duration calculator to compare other routes.