The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Impfondo Airport (ION) in Impfondo, Congo is 12,149 kilometers (7,549 miles / 6,560 nautical miles). The estimated flight time for this route is approximately 15h, flying east northeast at a heading of 76°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting United States with Congo. It is an intercontinental flight between North America and Africa. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 22:17 in Houston, it's 05:17 in Impfondo. 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 1,003 feet between the two airports. Impfondo Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Impfondo (ION) to Houston (IAH) follows a heading of 303° (west northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the George Bush Intcntl/Houston Airport (IAH) and Impfondo Airport (ION) detail pages, or use our flight duration calculator to compare other routes.