The flight from Dallas-Fort Worth (DFW) to Singapore (SIN) takes about 17h 36m nonstop on a widebody airliner, covering 9,702 miles (15,614 km).
Singapore is 13 hours ahead of Dallas-Fort Worth. 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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