The flight from Frankfurt am Main (FRA) to Seattle (SEA) takes about 10h 5m nonstop on a widebody airliner, covering 5,094 miles (8,198 km).
Seattle is 9 hours behind Frankfurt am Main. You cross 9 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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