Cheapest return flights from Seattle to Dublin in September from 594€

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 September 2025 (see full year).

Return flights

09 Sep - 18 Sep United
23 Sep - 07 Oct Air France
17 Sep - 24 Sep United
23 Sep - 07 Oct Aer Lingus direct
09 Sep - 18 Sep Aer Lingus direct

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

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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