The flight distance from Madrid Barajas International Airport (MAD) in Madrid, Spain to The Florida Keys Marathon International Airport (MTH) in Marathon, United States is 7,236 kilometers (4,496 miles / 3,907 nautical miles). The estimated flight time for this route is approximately 10h, flying west northwest at a heading of 282°.

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 Spain 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 18:05 in Madrid, it's 12:05 in Marathon. With a 6-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 1,996 feet between the two airports. The Florida Keys Marathon International Airport sits lower than Madrid Barajas International Airport.

The return flight from Marathon (MTH) to Madrid (MAD) follows a heading of 55° (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 Madrid Barajas International Airport (MAD) and The Florida Keys Marathon International Airport (MTH) detail pages, or use our flight duration calculator to compare other routes.