Cheapest return flights from Seattle to Dublin in August from $525

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

Return flights

25 Aug - 25 Sep Scandinavian Airlines
18 Aug - 01 Sep Aer Lingus direct
16 Aug - 25 Aug Aer Lingus direct
15 Aug - 25 Aug Delta
13 Aug - 20 Aug Air France
13 Aug - 20 Aug Aer Lingus direct
15 Aug - 25 Aug Aer Lingus direct
09 Aug - 16 Aug Air Canada
09 Aug - 16 Aug Aer Lingus direct
25 Aug - 25 Sep Aer Lingus direct
06 Aug - 11 Aug Air Canada
06 Aug - 11 Aug Aer Lingus direct

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

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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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