Cheapest return flights from Washington to Dublin in December from $682

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

Return flights

30 Dec - 13 Jan British Airways
29 Dec - 10 Jan Icelandair
30 Dec - 07 Jan British Airways
28 Dec - 31 Dec Air Canada
29 Dec - 31 Dec American Airlines
28 Dec - 01 Jan Air Canada
26 Dec - 28 Dec United
29 Dec - 05 Jan Iberia
30 Dec - 04 Jan Air Canada
27 Dec - 04 Jan Air Canada
26 Dec - 01 Jan TAP
26 Dec - 04 Jan TAP
30 Dec - 02 Jan American Airlines

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

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