AirHint found the following cheapest return flights from Washington (DCA) to Dublin (DUB) in January 2026 (see full year).

Return flights

16 Jan - 20 Jan	American Airlines
25 Jan - 01 Feb	American Airlines
19 Jan - 14 Feb	jetBlue
03 Jan - 24 Jan	Air Canada
05 Jan - 31 Jan	British Airways
26 Jan - 21 Feb	Air France
21 Jan - 28 Jan	jetBlue
12 Jan - 07 Feb	Air Canada
11 Jan - 18 Jan	jetBlue
16 Jan - 23 Jan	jetBlue
26 Jan - 02 Feb	jetBlue
31 Jan - 07 Feb	jetBlue
06 Jan - 13 Jan	jetBlue
02 Jan - 24 Jan	Finnair
08 Jan - 12 Jan	Icelandair
01 Jan - 08 Jan	jetBlue

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

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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Cheapest return flights from Washington to Dublin in January from $502

Return flights