The flight distance from St Louis Regional Airport (ALN) in Alton/St Louis, United States to Barcelona International Airport (BCN) in Barcelona, Spain is 7,437 kilometers (4,621 miles / 4,016 nautical miles). The estimated flight time for this route is approximately 10h, flying northeast at a heading of 55°.

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 Spain. 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 12:45 in Alton/St Louis, it's 19:45 in Barcelona. With a 7-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 Barcelona (BCN) to Alton/St Louis (ALN) follows a heading of 302° (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 St Louis Regional Airport (ALN) and Barcelona International Airport (BCN) detail pages, or use our flight duration calculator to compare other routes.