Cheapest return flights from Seattle to Dublin in August from $657

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

Return flights

18 Aug - 01 Sep Air Canada
27 Aug - 08 Sep Turkish Airlines
18 Aug - 01 Sep Aer Lingus direct
12 Aug - 19 Aug Aer Lingus direct
14 Aug - 25 Aug Air Canada
13 Aug - 24 Aug Lufthansa
14 Aug - 24 Aug Lufthansa
04 Aug - 14 Aug Scandinavian Airlines
05 Aug - 14 Aug Air Canada
14 Aug - 25 Aug Aer Lingus direct
17 Aug - 24 Aug Aer Lingus direct
27 Aug - 08 Sep Aer Lingus direct
04 Aug - 14 Aug Aer Lingus direct
05 Aug - 14 Aug Aer Lingus direct
27 Aug - 03 Sep 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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