The flight distance from Gray Army Air Field (Joint Base Lewis-Mcchord) Airport (GRF) in Fort Lewis/Tacoma, United States to Incheon International Airport (ICN) in Seoul, South Korea is 8,384 kilometers (5,210 miles / 4,527 nautical miles). The estimated flight time for this route is approximately 11h, flying northwest at a heading of 310°.

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 South Korea. It is an intercontinental flight between North America and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 11:31 in Fort Lewis/Tacoma, it's 04:31 in Seoul. With a 17-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Seoul (ICN) to Fort Lewis/Tacoma (GRF) follows a heading of 41° (northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Gray Army Air Field (Joint Base Lewis-Mcchord) Airport (GRF) and Incheon International Airport (ICN) detail pages, or use our flight duration calculator to compare other routes.