Cheapest return flights from Seattle to Dublin in January from $374

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

Return flights

07 Jan - 31 Jan Icelandair
13 Jan - 07 Feb Icelandair
19 Jan - 26 Jan Icelandair
22 Jan - 29 Jan Icelandair
25 Jan - 01 Feb Icelandair
28 Jan - 04 Feb Icelandair
06 Jan - 13 Jan British Airways
08 Jan - 13 Jan Icelandair
13 Jan - 20 Jan Icelandair
16 Jan - 23 Jan Icelandair
04 Jan - 24 Jan British Airways
05 Jan - 31 Jan British Airways
06 Jan - 31 Jan British Airways
15 Jan - 07 Feb British Airways

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

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