The flight from Sepang (KUL) to Houston (IAH) takes about 17h 41m nonstop on a widebody airliner, covering 9,911 miles (15,949 km).
Houston is 13 hours behind Sepang. You cross 13 time zones heading west. Westbound trips like this one are usually a little easier to adjust to, so plan for a day or two of jet lag.
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