The flight distance from Dublin Airport (DUB) in Dublin, Ireland to The Florida Keys Marathon International Airport (MTH) in Marathon, United States is 6,832 kilometers (4,245 miles / 3,689 nautical miles). The estimated flight time for this route is approximately 9h, flying west at a heading of 274°.

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 Ireland 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 18:16 in Dublin, it's 13:16 in Marathon. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Marathon (MTH) to Dublin (DUB) follows a heading of 41° (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 Dublin Airport (DUB) and The Florida Keys Marathon International Airport (MTH) detail pages, or use our flight duration calculator to compare other routes.