Cheapest one-way flights from Seattle to Dublin in December from 315€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Dublin (DUB) in December 2025 (see full year).

One-Way flights

28 Dec British Airways
27 Dec United
26 Dec Lufthansa
14 Dec Hawaiian Airlines
16 Dec Hawaiian Airlines
14 Dec Aer Lingus direct
17 Dec Hawaiian Airlines
28 Dec Aer Lingus direct
26 Dec Aer Lingus direct
17 Dec Aer Lingus direct

Also check the deals for return flights from Seattle to Dublin in December.

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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