Cheapest return flights from Washington to Dublin in December from $491

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

Return flights

13 Dec - 14 Dec Aer Lingus direct
12 Dec - 16 Dec Aer Lingus direct
30 Dec - 13 Jan Icelandair
30 Dec - 13 Jan Aer Lingus direct
27 Dec - 13 Jan Lufthansa
27 Dec - 13 Jan Aer Lingus direct
29 Dec - 10 Jan Air Canada
24 Dec - 14 Jan Air Canada
26 Dec - 17 Jan Air Canada
29 Dec - 06 Jan Air Canada
25 Dec - 15 Jan American Airlines
26 Dec - 17 Jan Aer Lingus direct
13 Dec - 19 Dec Aer Lingus direct
12 Dec - 14 Dec Aer Lingus direct
15 Dec - 26 Dec Aer Lingus direct
13 Dec - 26 Dec Aer Lingus direct
24 Dec - 27 Dec Air Canada
13 Dec - 20 Dec Aer Lingus direct
12 Dec - 13 Dec Lufthansa
15 Dec - 22 Dec Icelandair

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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