Cheapest return flights from Washington to Dublin in December from $529

Best time to book flights for Washington (IAD) to Dublin (DUB) flights at AirHint

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 Icelandair
03 Dec - 17 Dec Icelandair
07 Dec - 20 Dec Icelandair
27 Dec - 10 Jan Icelandair
02 Dec - 09 Dec United direct
12 Dec - 19 Dec Icelandair
03 Dec - 17 Dec Aer Lingus direct
12 Dec - 19 Dec United direct
07 Dec - 20 Dec United direct
24 Dec - 07 Jan TAP
27 Dec - 10 Jan Aer Lingus direct
17 Dec - 07 Jan TAP
27 Dec - 01 Jan TAP
11 Dec - 03 Jan Icelandair
28 Dec - 03 Jan TAP
22 Dec - 29 Dec Icelandair
22 Dec - 29 Dec United direct
20 Dec - 01 Jan Icelandair
20 Dec - 01 Jan United direct
11 Dec - 03 Jan Aer Lingus direct

Also check the deals for one-way flights from Washington 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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