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

Return flights

27 Sep - 04 Oct	Ryanair
13 Sep - 20 Sep	Ryanair
17 Sep - 21 Sep	Ryanair
19 Sep - 22 Sep	Ryanair
19 Sep - 21 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
22 Sep - 06 Oct	Ryanair
27 Sep - 30 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
24 Sep - 29 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
25 Sep - 29 Sep	Lufthansa
26 Sep - 03 Oct	Norwegian Air Sweden AOC
19 Sep - 03 Oct	Norwegian Air Sweden AOC
12 Sep - 03 Oct	Norwegian Air Sweden AOC

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 137€

Return flights