Cheapest return flights from Seattle to Dublin in May from $391

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

Return flights

05 May - 12 May Air Canada
12 May - 20 May Air Canada
02 May - 23 May Scandinavian Airlines
06 May - 16 May Icelandair
31 May - 10 Jun British Airways
12 May - 19 May Icelandair
05 May - 12 May Aer Lingus direct
16 May - 06 Jun British Airways
02 May - 09 May Icelandair
31 May - 20 Jun British Airways
12 May - 20 May Aer Lingus direct
12 May - 19 May Aer Lingus direct
06 May - 16 May Aer Lingus direct
16 May - 06 Jun Aer Lingus direct
31 May - 10 Jun Aer Lingus direct
31 May - 20 Jun Aer Lingus direct

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