Cheapest return SEA–FRA flights, May

AirHint found the following cheapest return flights from Seattle (SEA) to Frankfurt (FRA) in May 2026 (see full year).

Return flights

07 May - 17 May Icelandair
03 May - 13 May Icelandair
18 May - 21 May Condor direct
28 May - 04 Jun Icelandair
04 May - 18 May Condor
04 May - 18 May Condor direct
07 May - 17 May Condor direct
14 May - 28 May Condor direct
13 May - 20 May Condor direct
29 May - 26 Jun Icelandair
02 May - 27 May Turkish Airlines
02 May - 27 May Condor direct

Also check the deals for one-way flights from Seattle to Frankfurt in May.

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