The flight distance from Washington Dulles International Airport (IAD) in Washington, United States to Valle Del Conlara International Airport (RLO) in Merlo, Argentina is 8,027 kilometers (4,988 miles / 4,334 nautical miles). The estimated flight time for this route is approximately 10h, flying south at a heading of 169°.

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 10:32 in Washington, it's 12:32 in Merlo.

There is a significant elevation difference of 1,709 feet between the two airports. Valle Del Conlara International Airport sits higher than Washington Dulles International Airport.

The return flight from Merlo (RLO) to Washington (IAD) follows a heading of 350° (north). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Washington Dulles International Airport (IAD) and Valle Del Conlara International Airport (RLO) detail pages, or use our flight duration calculator to compare other routes.