Cheapest return flights from Seattle to Madrid in January from $429

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

Return flights

12 Jan - 27 Jan British Airways
21 Jan - 28 Jan Iberia
27 Jan - 03 Feb Iberia
28 Jan - 04 Feb Iberia
12 Jan - 25 Jan Lufthansa
22 Jan - 29 Jan Iberia
23 Jan - 30 Jan Iberia
26 Jan - 02 Feb Iberia
19 Jan - 26 Jan Iberia
29 Jan - 05 Feb Iberia
30 Jan - 06 Feb Iberia
25 Jan - 01 Feb Iberia
31 Jan - 07 Feb Iberia
17 Jan - 24 Jan Iberia
24 Jan - 31 Jan Iberia
13 Jan - 20 Jan Iberia
08 Jan - 15 Jan United

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

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