The flight distance from Ronald Reagan Washington Ntl Airport (DCA) in Washington, United States to Ponciano Arriaga International Airport (SLP) in San Luis Potosi, Mexico is 2,923 kilometers (1,816 miles / 1,578 nautical miles). The estimated flight time for this route is approximately 4h, flying west southwest at a heading of 238°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is an international route connecting United States with Mexico. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 12:30 in Washington, it's 11:30 in San Luis Potosi.

There is a significant elevation difference of 6,021 feet between the two airports. Ponciano Arriaga International Airport sits higher than Ronald Reagan Washington Ntl Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from San Luis Potosi (SLP) to Washington (DCA) follows a heading of 45° (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 Ronald Reagan Washington Ntl Airport (DCA) and Ponciano Arriaga International Airport (SLP) detail pages, or use our flight duration calculator to compare other routes.