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

Return flights

04 Sep - 11 Sep	Icelandair
02 Sep - 11 Sep	Delta
05 Sep - 12 Sep	Icelandair
30 Sep - 07 Oct	Icelandair
09 Sep - 16 Sep	United
03 Sep - 10 Sep	United
30 Sep - 13 Oct	British Airways
11 Sep - 18 Sep	United
01 Sep - 08 Sep	United
13 Sep - 20 Sep	United
26 Sep - 29 Sep	British Airways
15 Sep - 22 Sep	United
27 Sep - 04 Oct	United
24 Sep - 01 Oct	Aer Lingus

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 396€

Return flights