The flight distance from Incheon International Airport (ICN) in Seoul, South Korea to Swansea Airport (SWS) in Swansea, United Kingdom is 9,006 kilometers (5,596 miles / 4,863 nautical miles). The estimated flight time for this route is approximately 12h, flying north northwest at a heading of 331°.

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 Kingdom. It is an intercontinental flight between Asia and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 15:34 in Seoul, it's 06:34 in Swansea. With a 9-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 Swansea (SWS) to Seoul (ICN) follows a heading of 38° (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 Incheon International Airport (ICN) and Swansea Airport (SWS) detail pages, or use our flight duration calculator to compare other routes.