Cheapest return flights from Washington to Dublin in September from $480

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

Return flights

02 Sep - 11 Sep jetBlue
11 Sep - 14 Sep jetBlue
10 Sep - 18 Sep Air Canada
09 Sep - 16 Sep United
03 Sep - 10 Sep United
17 Sep - 24 Sep United
30 Sep - 08 Oct Air Canada
11 Sep - 20 Sep jetBlue
12 Sep - 19 Sep United
05 Sep - 07 Sep jetBlue
06 Sep - 13 Sep United
27 Sep - 04 Oct United
28 Sep - 04 Oct Air Canada
25 Sep - 03 Oct jetBlue

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

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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