Cheapest return flights from Seattle to Dublin in August from $508

Best time to book flights for Seattle (SEA) to Dublin (DUB) flights at AirHint

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

Return flights

11 Aug - 20 Aug Icelandair
04 Aug - 19 Aug Icelandair
12 Aug - 20 Aug Icelandair
17 Aug - 27 Aug Scandinavian Airlines
19 Aug - 26 Aug Aer Lingus direct
30 Aug - 13 Sep Scandinavian Airlines
14 Aug - 21 Aug Aer Lingus direct
04 Aug - 19 Aug Aer Lingus direct
11 Aug - 20 Aug Aer Lingus direct
12 Aug - 20 Aug Aer Lingus direct
17 Aug - 27 Aug Aer Lingus direct
29 Aug - 05 Sep Aer Lingus direct
30 Aug - 13 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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