Cheapest return flights from Seattle to Dublin in August from $337

AirHint found the following cheapest return flights from Seattle (SEA) to Dublin (DUB) in August 2025 (see full year).

Return flights

18 Aug - 26 Aug Aer Lingus direct
19 Aug - 26 Aug Aer Lingus direct
12 Aug - 26 Aug Aer Lingus direct
09 Aug - 22 Aug Air Canada
17 Aug - 22 Aug Aer Lingus direct
13 Aug - 22 Aug Aer Lingus direct
04 Aug - 19 Aug Air Canada
05 Aug - 19 Aug Air Canada
08 Aug - 22 Aug Air Canada
09 Aug - 19 Aug Air Canada
22 Aug - 05 Sep Air Canada
19 Aug - 02 Sep Aer Lingus direct
20 Aug - 03 Sep Aer Lingus direct
26 Aug - 02 Sep Aer Lingus direct
23 Aug - 03 Sep Air Canada
22 Aug - 01 Sep Icelandair
21 Aug - 04 Sep Lufthansa
21 Aug - 04 Sep Aer Lingus direct
23 Aug - 03 Sep Aer Lingus direct
22 Aug - 05 Sep Aer Lingus direct

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

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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