Cheapest return flights from Washington to Dublin in September from $583

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

Return flights

02 Sep - 08 Sep jetBlue
01 Sep - 08 Sep jetBlue
02 Sep - 09 Sep Air Canada
03 Sep - 10 Sep jetBlue
15 Sep - 19 Sep jetBlue
13 Sep - 24 Sep jetBlue
07 Sep - 14 Sep British Airways
06 Sep - 13 Sep jetBlue
20 Sep - 30 Sep Air Canada
21 Sep - 28 Sep British Airways

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

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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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