The flight distance from Sofia Airport (SOF) in Sofia, Bulgaria to St Louis Lambert International Airport (STL) in St Louis, United States is 8,768 kilometers (5,448 miles / 4,734 nautical miles). The estimated flight time for this route is approximately 11h, flying northwest at a heading of 313°.

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 Bulgaria 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 07:56 in Sofia, it's 23:56 in St Louis. With a 8-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 1,125 feet between the two airports. St Louis Lambert International Airport sits lower than Sofia Airport.

The return flight from St Louis (STL) to Sofia (SOF) follows a heading of 43° (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 Sofia Airport (SOF) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.