Cheapest return flights from Seattle to Madrid in April from $660

AirHint found the following cheapest return flights from Seattle (SEA) to Madrid (MAD) in April 2026 (see full year).

Return flights

27 Apr - 23 May Scandinavian Airlines
02 Apr - 18 Apr Condor
02 Apr - 25 Apr Condor
01 Apr - 25 Apr Turkish Airlines
23 Apr - 16 May Turkish Airlines
03 Apr - 25 Apr Turkish Airlines
08 Apr - 15 Apr Iberia
13 Apr - 20 Apr Iberia
23 Apr - 30 Apr Iberia
03 Apr - 10 Apr Iberia

Also check the deals for one-way flights from Seattle to Madrid in April.

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