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

Return flights

24 Sep - 15 Oct	SalamAir
28 Sep - 14 Oct	LOT
08 Sep - 19 Sep	IndiGo
29 Sep - 05 Oct	IndiGo
22 Sep - 28 Sep	IndiGo
26 Sep - 03 Oct	SWISS
15 Sep - 05 Oct	IndiGo
21 Sep - 27 Sep	IndiGo
18 Sep - 26 Sep	IndiGo
18 Sep - 28 Sep	SWISS
04 Sep - 07 Sep	IndiGo
20 Sep - 04 Oct	Lufthansa
05 Sep - 26 Sep	IndiGo
01 Sep - 08 Sep	IndiGo
03 Sep - 10 Sep	Air France

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 $493

Return flights