The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Port Heiden Airport (PTH) in Port Heiden, United States is 8,868 kilometers (5,510 miles / 4,788 nautical miles). The estimated flight time for this route is approximately 11h, flying north northeast at a heading of 30°.

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 Nepal with United States. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 08:51 in Kathmandu, it's 19:06 in Port Heiden. With a 13.75-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 4,295 feet between the two airports. Port Heiden Airport sits lower than Tribhuvan International Airport.

The return flight from Port Heiden (PTH) to Kathmandu (KTM) follows a heading of 306° (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 Tribhuvan International Airport (KTM) and Port Heiden Airport (PTH) detail pages, or use our flight duration calculator to compare other routes.