The flight distance from Oconee County Regional Airport (CEU) in Clemson, United States to Lisbon Portela Airport (LIS) in Lisbon, Portugal is 6,406 kilometers (3,980 miles / 3,459 nautical miles). The estimated flight time for this route is approximately 9h, flying east northeast at a heading of 62°.

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

Time zone information: When it's 05:01 in Clemson, it's 10:01 in Lisbon. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Lisbon (LIS) to Clemson (CEU) follows a heading of 291° (west 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 Oconee County Regional Airport (CEU) and Lisbon Portela Airport (LIS) detail pages, or use our flight duration calculator to compare other routes.