Cheapest return flights from Seattle to Madrid in April from 604€

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

Return flights

02 Apr - 18 Apr Condor
07 Apr - 14 Apr Iberia
14 Apr - 21 Apr Iberia
08 Apr - 15 Apr Iberia
06 Apr - 13 Apr Iberia
10 Apr - 17 Apr Iberia
12 Apr - 19 Apr Iberia
13 Apr - 20 Apr Iberia
09 Apr - 16 Apr Iberia
24 Apr - 01 May Iberia
02 Apr - 09 Apr Iberia

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

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