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

Return flights

03 Sep - 09 Sep	jetBlue
01 Sep - 08 Sep	jetBlue
03 Sep - 11 Sep	jetBlue
02 Sep - 08 Sep	jetBlue
01 Sep - 07 Sep	jetBlue
01 Sep - 13 Sep	jetBlue
11 Sep - 16 Sep	jetBlue
04 Sep - 11 Sep	jetBlue
05 Sep - 20 Sep	Air Transat
11 Sep - 21 Sep	jetBlue
25 Sep - 01 Oct	jetBlue
28 Sep - 07 Oct	Ryanair
26 Sep - 07 Oct	Iberia
29 Sep - 08 Oct	Ryanair

Also check the deals for one-way flights from Dublin to Cancun 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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from Dublin to Cancun in September from 453€

Return flights