Cheapest return flights from Seattle to Madrid in January from $400

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

Return flights

20 Jan - 29 Jan Iberia
14 Jan - 21 Jan British Airways
14 Jan - 28 Jan British Airways
21 Jan - 29 Jan Air France
28 Jan - 04 Feb Iberia
04 Jan - 24 Jan British Airways
18 Jan - 25 Jan Iberia
01 Jan - 24 Jan Iberia
02 Jan - 24 Jan Lufthansa
03 Jan - 24 Jan British Airways
10 Jan - 17 Jan Iberia

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

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