AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Dublin (DUB) in September 2025 (see full year).

Return flights

17 Sep - 24 Sep	Icelandair
29 Sep - 06 Oct	Icelandair
02 Sep - 09 Sep	United
11 Sep - 24 Sep	Air France
11 Sep - 18 Sep	United
05 Sep - 12 Sep	United
14 Sep - 21 Sep	United
08 Sep - 15 Sep	United
26 Sep - 06 Oct	British Airways
20 Sep - 27 Sep	United
26 Sep - 03 Oct	United
23 Sep - 30 Sep	United

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

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 Raleigh-durham to Dublin in September from $378

Return flights