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

Return flights

02 Sep - 09 Sep	Air Canada
10 Sep - 16 Sep	jetBlue
03 Sep - 10 Sep	United
10 Sep - 17 Sep	United
22 Sep - 10 Oct	jetBlue
22 Sep - 10 Oct	Aer Lingus	direct
03 Sep - 10 Sep	Aer Lingus	direct
10 Sep - 17 Sep	Aer Lingus	direct
02 Sep - 09 Sep	Aer Lingus	direct
04 Sep - 09 Sep	Aer Lingus	direct
16 Sep - 23 Sep	United
05 Sep - 10 Sep	United
28 Sep - 05 Oct	United
25 Sep - 02 Oct	Aer Lingus	direct

Also check the deals for one-way flights from Windsor Locks 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 Windsor Locks to Dublin in September from $492

Return flights