The flight distance from Keflavik International Airport (KEF) in Reykjavik, Iceland to St Louis Lambert International Airport (STL) in St Louis, United States is 5,139 kilometers (3,193 miles / 2,775 nautical miles). The estimated flight time for this route is approximately 7h, flying west at a heading of 271°.

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

Time zone information: When it's 12:49 in Reykjavik, it's 07:49 in St Louis. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from St Louis (STL) to Reykjavik (KEF) follows a heading of 34° (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 Keflavik International Airport (KEF) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.