Cheapest return flights from Seattle to Florence in September from $766

AirHint found the following cheapest return flights from Seattle (SEA) to Florence (FLR) in September 2026 (see full year).

Return flights

30 Sep - 08 Oct Icelandair
27 Sep - 05 Oct Icelandair
28 Sep - 06 Oct Condor
24 Sep - 02 Oct Icelandair
25 Sep - 03 Oct Scandinavian Airlines
29 Sep - 07 Oct Icelandair
26 Sep - 04 Oct Alaska Airlines

Also check the deals for one-way flights from Seattle to Florence in September.

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