The flight from Newark (EWR) to San Diego (SAN) takes about 5h 22m nonstop on a narrowbody airliner, covering 2,420 miles (3,895 km).
San Diego is 3 hours behind Newark. 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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