Cheapest return flights from Seattle to Dublin in December from 391€

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

Return flights

03 Dec - 10 Dec Aer Lingus direct
03 Dec - 07 Dec Air France
03 Dec - 07 Dec Aer Lingus direct
12 Dec - 13 Jan Delta
12 Dec - 18 Dec British Airways
12 Dec - 12 Jan British Airways
12 Dec - 07 Jan British Airways
14 Dec - 29 Dec Aer Lingus direct
12 Dec - 19 Dec British Airways
12 Dec - 11 Jan British Airways
31 Dec - 07 Jan Aer Lingus
12 Dec - 17 Dec British Airways
26 Dec - 29 Dec Aer Lingus direct
12 Dec - 06 Jan British Airways
14 Dec - 31 Dec Aer Lingus direct
13 Dec - 19 Dec British Airways
01 Dec - 10 Jan Icelandair
07 Dec - 02 Jan KLM
05 Dec - 04 Jan Lufthansa
29 Dec - 04 Jan Lufthansa

Also check the deals for one-way 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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Feel free to contact us with any feedback or request another flight research.