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

Return flights

09 Mar - 23 Mar	Condor	direct
12 Mar - 19 Mar	Condor	direct
14 Mar - 21 Mar	Condor	direct
16 Mar - 21 Mar	Condor	direct
16 Mar - 30 Mar	Condor	direct
13 Mar - 21 Mar	Condor
06 Mar - 20 Mar	Icelandair
20 Mar - 05 Apr	Alaska Airlines
16 Mar - 28 Mar	Alaska Airlines
10 Mar - 17 Mar	Icelandair
27 Mar - 04 Apr	Turkish Airlines
20 Mar - 27 Mar	Icelandair
25 Mar - 01 Apr	Lufthansa

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

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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Cheapest return flights from Seattle to Frankfurt in March from 489€

Return flights