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

Return flights

02 Jun - 09 Jun	Air Canada
03 Jun - 10 Jun	Air Canada
01 Jun - 09 Jun	Air Canada
02 Jun - 10 Jun	Air Canada
08 Jun - 16 Jun	Air Canada
09 Jun - 17 Jun	Air Canada
10 Jun - 18 Jun	Air Canada
09 Jun - 16 Jun	Air Canada
03 Jun - 11 Jun	Air Canada
10 Jun - 17 Jun	Air Canada
23 Jun - 01 Jul	Air Canada
29 Jun - 07 Jul	Air Canada
30 Jun - 08 Jul	Air Canada
27 Jun - 05 Jul	Icelandair
25 Jun - 03 Jul	Icelandair
26 Jun - 04 Jul	Icelandair
24 Jun - 02 Jul	Icelandair
28 Jun - 06 Jul	Air Canada
24 Jun - 02 Jul	Aer Lingus	direct
30 Jun - 08 Jul	Aer Lingus	direct

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

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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Cheapest return flights from Seattle to Dublin in June from 502€

Return flights