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

Return flights

29 Sep - 06 Oct	easyJet	direct
15 Sep - 17 Sep	Ryanair
10 Sep - 14 Sep	Vueling Airlines
08 Sep - 14 Sep	Vueling Airlines
05 Sep - 10 Sep	easyJet	direct
04 Sep - 10 Sep	Ryanair
10 Sep - 14 Sep	easyJet	direct
05 Sep - 08 Sep	easyJet	direct
15 Sep - 17 Sep	easyJet	direct
03 Sep - 08 Sep	easyJet	direct
03 Sep - 07 Sep	easyJet	direct
26 Sep - 01 Oct	Ryanair
26 Sep - 01 Oct	easyJet	direct

Also check the deals for one-way flights from Valencia 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 Valencia to Basel in September from $90

Return flights