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Compare & reserve one-way or return flights from Sioux Falls to Seattle from only to get the best flight deals and promotions for your FSD to BFI trip! Flights from Sioux Falls Regional Airport to Boeing Field Airport Important: This destination may have COVID travel restrictions in place, including specific restrictions for lodging.

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May 22, Flights to Seattle / Tacoma [SeaTac], Seattle-Tacoma International Airport (SEA) from Sioux Falls (FSD), Sioux Falls Regional Airport [Joe Foss Field], South Dakota can be cheap.

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