Cheapest return flights from Seattle to Dublin in April from $515

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

Return flights

16 Apr - 23 Apr Air France
14 Apr - 24 Apr Icelandair
24 Apr - 01 May Icelandair
17 Apr - 24 Apr Icelandair
20 Apr - 27 Apr KLM
13 Apr - 20 Apr Icelandair
15 Apr - 22 Apr Icelandair
14 Apr - 21 Apr Icelandair
23 Apr - 30 Apr KLM
22 Apr - 29 Apr Icelandair
19 Apr - 26 Apr Icelandair
27 Apr - 04 May Icelandair
28 Apr - 05 May Icelandair
29 Apr - 06 May Icelandair
26 Apr - 03 May Icelandair
25 Apr - 02 May Icelandair
30 Apr - 07 May Icelandair
18 Apr - 24 May Icelandair
28 Apr - 05 May Aer Lingus direct
29 Apr - 06 May Aer Lingus direct

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

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