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

Return flights

28 Jul - 13 Aug	Iberia
28 Jul - 13 Aug	Aer Lingus	direct
23 Jul - 30 Jul	Air Canada
20 Jul - 20 Aug	United
24 Jul - 30 Jul	Delta
21 Jul - 06 Aug	Air Canada
22 Jul - 29 Jul	United
23 Jul - 31 Jul	Air Canada
20 Jul - 20 Aug	Aer Lingus	direct
21 Jul - 06 Aug	Aer Lingus	direct
25 Jul - 05 Aug	Delta
25 Jul - 31 Jul	Delta
24 Jul - 28 Jul	Delta
31 Jul - 03 Aug	Delta
25 Jul - 28 Jul	KLM
28 Jul - 04 Aug	Aer Lingus	direct
31 Jul - 03 Aug	Aer Lingus	direct

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Seattle to Dublin in July from 371€

Return flights