AirHint found the following cheapest return flights from Mumbai (BOM) to Keflavik (KEF) in October 2025 (see full year).

Return flights

11 Oct - 21 Oct	SWISS
17 Oct - 02 Nov	Lufthansa
11 Oct - 18 Oct	SWISS
11 Oct - 16 Oct	SWISS
01 Oct - 16 Oct	Lufthansa
09 Oct - 16 Oct	Lufthansa
18 Oct - 26 Oct	Lufthansa
19 Oct - 02 Nov	Lufthansa
22 Oct - 02 Nov	Lufthansa
27 Oct - 08 Nov	SWISS
01 Oct - 13 Oct	Lufthansa
10 Oct - 19 Oct	Lufthansa
09 Oct - 19 Oct	Lufthansa
17 Oct - 29 Oct	IndiGo
22 Oct - 01 Nov	Singapore Airlines

Also check the deals for one-way flights from Mumbai to Keflavik in October.

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 Keflavik in October from $751

Return flights