The flight from Barcelona (BCN) to Dallas-Fort Worth (DFW) takes about 10h 16m nonstop on a widebody airliner, covering 5,183 miles (8,342 km).
Dallas-Fort Worth is 7 hours behind Barcelona. You cross 7 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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