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

Return flights

19 Sep - 06 Oct	Ryanair
22 Sep - 01 Oct	Ryanair
08 Sep - 15 Sep	Ryanair
05 Sep - 07 Sep	Ryanair
02 Sep - 09 Sep	Air France
01 Sep - 05 Sep	Ryanair
18 Sep - 02 Oct	Brussels Airlines
06 Sep - 29 Sep	Air France
06 Sep - 12 Sep	Air France
04 Sep - 25 Sep	easyJet
19 Sep - 22 Sep	Brussels Airlines
01 Sep - 22 Sep	KLM
01 Sep - 08 Sep	KLM

Also check the deals for one-way flights from Toulouse 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 Toulouse to Oslo in September from 138€

Return flights