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

Return flights

23 Sep - 30 Sep	IndiGo
12 Sep - 20 Sep	IndiGo
09 Sep - 16 Sep	IndiGo
26 Sep - 05 Oct	IndiGo
16 Sep - 25 Sep	IndiGo
18 Sep - 25 Sep	IndiGo
13 Sep - 27 Sep	IndiGo
29 Sep - 05 Oct	SWISS
04 Sep - 11 Sep	IndiGo
01 Sep - 08 Sep	IndiGo

Also check the deals for one-way flights from Mumbai to Oslo 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 Oslo in September from 485€

Return flights