The flight distance from London Heathrow Airport (LHR) in London, United Kingdom to Ocean Reef Club Airport (OCA) in Key Largo, United States is 7,147 kilometers (4,441 miles / 3,859 nautical miles). The estimated flight time for this route is approximately 9h, flying west at a heading of 279°.

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 Kingdom 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 04:13 in London, it's 23:13 in Key Largo. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Key Largo (OCA) to London (LHR) follows a heading of 43° (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 London Heathrow Airport (LHR) and Ocean Reef Club Airport (OCA) detail pages, or use our flight duration calculator to compare other routes.