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

Return flights

24 Sep - 06 Oct	easyJet
24 Sep - 30 Sep	easyJet
24 Sep - 01 Oct	easyJet
24 Sep - 28 Sep	easyJet
24 Sep - 17 Oct	easyJet	direct
24 Sep - 30 Sep	easyJet	direct
23 Sep - 28 Sep	easyJet
24 Sep - 01 Oct	easyJet	direct
23 Sep - 30 Sep	easyJet	direct
26 Sep - 29 Sep	easyJet
30 Sep - 17 Oct	easyJet	direct
18 Sep - 23 Sep	easyJet	direct
24 Sep - 06 Oct	easyJet	direct
25 Sep - 29 Sep	easyJet
26 Sep - 17 Oct	easyJet	direct
25 Sep - 02 Oct	easyJet	direct
20 Sep - 12 Oct	easyJet	direct
17 Sep - 06 Oct	easyJet
08 Sep - 24 Sep	Wizz Air
09 Sep - 23 Sep	Jet2

Also check the deals for one-way flights from Split to Basel 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 Split to Basel in September from $126

Return flights