The flight from Boston (BOS) to Las Vegas (LAS) takes about 5h 17m nonstop on a narrowbody airliner, covering 2,375 miles (3,822 km).
Las Vegas is 3 hours behind Boston. You cross 3 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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