The flight distance from George Bush Intcntl/Houston Airport (IAH) in Houston, United States to Klagenfurt Airport (KLU) in Klagenfurt am Worthersee, Austria is 8,964 kilometers (5,570 miles / 4,840 nautical miles). The estimated flight time for this route is approximately 12h, flying northeast at a heading of 41°.

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

Time zone information: When it's 17:17 in Houston, it's 00:17 in Klagenfurt am Worthersee. 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 1,374 feet between the two airports. Klagenfurt Airport sits higher than George Bush Intcntl/Houston Airport.

The return flight from Klagenfurt am Worthersee (KLU) to Houston (IAH) follows a heading of 304° (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 Klagenfurt Airport (KLU) detail pages, or use our flight duration calculator to compare other routes.