Cheapest one-way flights from Seattle to Frankfurt in September from $288

AirHint found the following cheapest one-way flights from Seattle (SEA) to Frankfurt (FRA) in September 2025 (see full year).

One-Way flights

29 Sep WestJet
23 Sep Hawaiian Airlines
24 Sep Hawaiian Airlines
26 Sep Frontier Airlines
14 Sep Hawaiian Airlines
18 Sep Condor
06 Sep Alaska Airlines
25 Sep Alaska Airlines
08 Sep Alaska Airlines
18 Sep Condor direct

Also check the deals for return flights from Seattle to Frankfurt in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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