The flight distance from Belfast International Airport (BFS) in Belfast, United Kingdom to Denver International Airport (DEN) in Denver, United States is 6,980 kilometers (4,337 miles / 3,769 nautical miles). The estimated flight time for this route is approximately 9h, flying west northwest at a heading of 301°.

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 22:55 in Belfast, it's 15:55 in Denver. With a 7-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 5,166 feet between the two airports. Denver International Airport sits higher than Belfast International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Belfast (BFS) follows a heading of 40° (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 Belfast International Airport (BFS) and Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.