The flight from San Diego (SAN) to Newark (EWR) takes about 4h 33m nonstop on a narrowbody airliner, covering 2,420 miles (3,895 km).
Newark is 3 hours ahead of San Diego. You cross 3 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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