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

Return flights

22 Sep - 29 Sep	AJet
17 Sep - 22 Sep	easyJet
25 Sep - 29 Sep	Wizz Air
17 Sep - 24 Sep	Wizz Air
17 Sep - 19 Sep	AJet
20 Sep - 21 Sep	Wizz Air
30 Sep - 03 Oct	Pegasus Airlines
25 Sep - 30 Sep	Wizz Air
30 Sep - 02 Oct	Pegasus Airlines
16 Sep - 22 Sep	Pegasus Airlines
19 Sep - 22 Sep	Pegasus Airlines
23 Sep - 26 Sep	easyJet
27 Sep - 04 Oct	Wizz Air
28 Sep - 04 Oct	Wizz Air
26 Sep - 04 Oct	Lufthansa

Also check the deals for one-way flights from Basel to Stockholm 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 Stockholm in September from 119€

Return flights