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

Return flights

17 Sep - 24 Sep	IndiGo
25 Sep - 28 Sep	IndiGo
19 Sep - 27 Sep	IndiGo
20 Sep - 27 Sep	IndiGo
16 Sep - 30 Sep	Air France
16 Sep - 25 Sep	Air France
16 Sep - 24 Sep	Air France
18 Sep - 25 Sep	IndiGo
17 Sep - 30 Sep	IndiGo
26 Sep - 30 Sep	British Airways
30 Sep - 14 Oct	Air France
24 Sep - 08 Oct	KLM
04 Sep - 14 Oct	Air France
10 Sep - 08 Oct	Lufthansa
16 Sep - 07 Oct	IndiGo
13 Sep - 08 Oct	Air France
10 Sep - 16 Oct	Lufthansa
30 Sep - 25 Oct	SWISS
01 Sep - 16 Oct	SWISS

Also check the deals for one-way flights from Mumbai 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 Mumbai to Dublin in September from $554

Return flights