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

Return flights

22 Sep - 30 Sep	Ryanair	direct
30 Sep - 01 Oct	Ryanair
30 Sep - 09 Oct	Ryanair
30 Sep - 02 Oct	Ryanair
28 Sep - 30 Sep	Ryanair
28 Sep - 02 Oct	Ryanair
25 Sep - 30 Sep	Ryanair
28 Sep - 01 Oct	Ryanair
24 Sep - 30 Sep	Ryanair	direct
17 Sep - 24 Sep	Ryanair
27 Sep - 30 Sep	Ryanair
23 Sep - 02 Oct	Ryanair
20 Sep - 02 Oct	Ryanair
30 Sep - 04 Oct	Ryanair
18 Sep - 25 Sep	Ryanair
28 Sep - 10 Oct	Ryanair
26 Sep - 30 Sep	Ryanair
22 Sep - 25 Sep	Ryanair
24 Sep - 25 Sep	Ryanair
23 Sep - 02 Oct	Ryanair	direct

Also check the deals for one-way flights from Dublin to Prague 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 Dublin to Prague in September from 99€

Return flights