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

Return flights

07 Sep - 21 Sep	easyJet	direct
14 Sep - 17 Sep	easyJet	direct
21 Sep - 24 Sep	easyJet	direct
28 Sep - 29 Sep	easyJet	direct
05 Sep - 07 Sep	easyJet	direct
22 Sep - 28 Sep	easyJet	direct
03 Sep - 07 Sep	easyJet	direct
19 Sep - 21 Sep	easyJet	direct
03 Sep - 05 Sep	easyJet	direct
12 Sep - 14 Sep	easyJet	direct
26 Sep - 01 Oct	easyJet	direct

Also check the deals for one-way flights from Basel to Toulouse 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 Basel to Toulouse in September from 53€

Return flights