Cheapest return flights from Seattle to Madrid in May from 668€

Best time to book flights for Seattle (SEA) to Madrid (MAD) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Madrid (MAD) in May 2025 (see full year).

Return flights

06 May - 19 May Icelandair
09 May - 26 May Turkish Airlines
01 May - 15 May Finnair
26 May - 05 Jun Icelandair
01 May - 21 May Delta
01 May - 23 May Delta
16 May - 31 May Condor
24 May - 05 Jun Condor
14 May - 21 May United
06 May - 13 May United
03 May - 10 May United
19 May - 26 May United
29 May - 05 Jun United

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

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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