The flight distance from Incheon International Airport (ICN) in Seoul, South Korea to Long Beach (Daugherty Field) Airport (LGB) in Long Beach, United States is 9,652 kilometers (5,998 miles / 5,212 nautical miles). The estimated flight time for this route is approximately 12h, flying northeast at a heading of 49°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting South Korea with United States. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:17 in Seoul, it's 07:17 in Long Beach. With a 16-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 Long Beach (LGB) to Seoul (ICN) follows a heading of 314° (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 Incheon International Airport (ICN) and Long Beach (Daugherty Field) Airport (LGB) detail pages, or use our flight duration calculator to compare other routes.