The flight from Mexico City (MEX) to Bangkok (BKK) takes about 17h 44m nonstop on a widebody airliner, covering 9,781 miles (15,741 km).
Bangkok is 13 hours ahead of Mexico City. You cross 13 time zones heading east. Eastbound trips like this one tend to be harder to adjust to, so plan for a day or two of jet lag.
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