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

Return flights

18 Sep - 25 Sep	Etihad Airways
19 Sep - 22 Sep	Etihad Airways
25 Sep - 30 Sep	KLM
22 Sep - 29 Sep	KLM
21 Sep - 25 Sep	Air France
18 Sep - 30 Sep	Air France
18 Sep - 29 Sep	Air France
25 Sep - 02 Oct	Kuwait Airways
21 Sep - 30 Sep	Air France
24 Sep - 05 Oct	British Airways
15 Sep - 25 Sep	IndiGo
25 Sep - 06 Oct	Lufthansa
18 Sep - 28 Sep	Air France
25 Sep - 03 Oct	KLM
26 Sep - 07 Oct	KLM
16 Sep - 20 Oct	Lufthansa
30 Sep - 07 Oct	KLM
28 Sep - 04 Oct	Turkish Airlines
27 Sep - 07 Oct	KLM
28 Sep - 05 Oct	Air France

Also check the deals for one-way flights from Mumbai to Barcelona 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 Barcelona in September from 363€

Return flights