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

Return flights

03 Sep - 10 Sep	Spirit Airlines
05 Sep - 12 Sep	Spirit Airlines
04 Sep - 11 Sep	jetBlue
02 Sep - 09 Sep	United
14 Sep - 23 Sep	Iberia
12 Sep - 26 Sep	jetBlue
03 Sep - 24 Sep	jetBlue
18 Sep - 29 Sep	Spirit Airlines
11 Sep - 18 Sep	United
01 Sep - 30 Sep	Air Canada
17 Sep - 04 Oct	Norse Atlantic Airways (UK)
26 Sep - 03 Oct	Aer Lingus

Also check the deals for one-way flights from Orlando 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 Orlando to Dublin in September from $487

Return flights