AirHint found the following cheapest one-way flights from Seattle (SEA) to Frankfurt (FRA) in May 2026 (see full year).
One-Way flights
| 04 May | Icelandair | ||
| 02 May | KLM | ||
| 06 May | Icelandair | ||
| 20 May | Icelandair | ||
| 01 May | KLM | ||
| 13 May | Icelandair | ||
| 15 May | Harbour Air | ||
| 02 May | Condor | direct | |
| 01 May | Condor | direct | |
| 06 May | Condor | direct |
Also check the deals for return flights from Seattle to Frankfurt in May.
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