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

Return flights

22 Sep - 07 Oct	Turkish Airlines
22 Sep - 29 Sep	Turkish Airlines
23 Sep - 30 Sep	Turkish Airlines
17 Sep - 24 Sep	Air France
24 Sep - 01 Oct	KLM
20 Sep - 25 Sep	Turkish Airlines
18 Sep - 24 Sep	Air France
18 Sep - 25 Sep	Air France
27 Sep - 04 Oct	British Airways
18 Sep - 22 Sep	Air France
24 Sep - 06 Oct	SWISS
25 Sep - 06 Oct	SWISS
30 Sep - 06 Oct	SWISS
25 Sep - 04 Oct	British Airways
29 Sep - 11 Oct	Turkish Airlines
20 Sep - 06 Oct	SWISS
19 Sep - 25 Sep	Air France
29 Sep - 04 Oct	SWISS
19 Sep - 29 Sep	SWISS
20 Sep - 23 Sep	Turkish Airlines

Also check the deals for one-way flights from Mumbai to Lisbon 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 Lisbon in September from 443€

Return flights