Cheapest return flights from Washington to Dublin in December from $427

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

Return flights

02 Dec - 09 Dec Aer Lingus direct
29 Dec - 24 Jan Icelandair
04 Dec - 09 Dec Icelandair
04 Dec - 11 Dec Icelandair
25 Dec - 08 Jan Icelandair
30 Dec - 13 Jan Icelandair
15 Dec - 10 Jan Scandinavian Airlines
04 Dec - 11 Dec Aer Lingus direct
07 Dec - 14 Dec Aer Lingus direct
01 Dec - 27 Dec Scandinavian Airlines
27 Dec - 17 Jan Icelandair
08 Dec - 19 Dec Icelandair
03 Dec - 07 Dec Aer Lingus direct
04 Dec - 09 Dec Aer Lingus direct
29 Dec - 24 Jan Aer Lingus direct
26 Dec - 17 Jan Icelandair
05 Dec - 29 Dec Icelandair
27 Dec - 17 Jan Aer Lingus direct
15 Dec - 10 Jan Aer Lingus direct
22 Dec - 13 Jan Aer Lingus direct

Also check the deals for one-way flights from Washington to Dublin in December.

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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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