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

Return flights

27 Jul - 04 Aug	Iberia
27 Jul - 06 Aug	Aer Lingus	direct
28 Jul - 06 Aug	Delta
22 Jul - 03 Aug	Iberia
22 Jul - 03 Aug	Aer Lingus	direct
07 Jul - 13 Jul	Lufthansa
19 Jul - 23 Aug	Aer Lingus	direct
16 Jul - 23 Jul	Aer Lingus
16 Jul - 07 Aug	Aer Lingus
08 Jul - 13 Jul	Lufthansa
03 Jul - 13 Jul	Lufthansa
03 Jul - 12 Jul	Delta

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

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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Cheapest return flights from Seattle to Dublin in July from 429€

Return flights