The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Domingo Faustino Sarmiento Airport (UAQ) in San Juan, Argentina is 8,142 kilometers (5,059 miles / 4,397 nautical miles). The estimated flight time for this route is approximately 11h, flying south southeast at a heading of 161°.

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

Time zone information: When it's 06:57 in St Louis, it's 08:57 in San Juan.

There is a significant elevation difference of 1,341 feet between the two airports. Domingo Faustino Sarmiento Airport sits higher than St Louis Lambert International Airport.

The return flight from San Juan (UAQ) to St Louis (STL) follows a heading of 342° (north 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 Lambert International Airport (STL) and Domingo Faustino Sarmiento Airport (UAQ) detail pages, or use our flight duration calculator to compare other routes.