Cheapest return flights from Washington (DCA) to Dublin (DUB), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
10 Sep 14 Sep Lufthansa
09 Sep 14 Sep Air Canada
22 Sep 29 Sep Air Canada
06 Sep 16 Sep Delta
11 Sep 14 Sep Air France
15 Sep 28 Sep KLM
14 Sep 25 Sep Air France
12 Sep 26 Sep Delta
02 Sep 10 Sep Air Canada
02 Sep 07 Sep Air Canada
09 Sep 05 Oct KLM
29 Sep 11 Oct KLM
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deals for one-way flights from Washington to Dublin in September.

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Updated Jul 7, 2026.

About these fares

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