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

Return flights

23 Sep - 30 Sep	Ryanair
17 Sep - 24 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
12 Sep - 17 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
16 Sep - 30 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
05 Sep - 10 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
29 Sep - 06 Oct	Ryanair
05 Sep - 09 Sep	Ryanair
22 Sep - 29 Sep	Ryanair
28 Sep - 01 Oct	Vueling Airlines
17 Sep - 15 Oct	Vueling Airlines
23 Sep - 10 Oct	Vueling Airlines
29 Sep - 16 Oct	Vueling Airlines
23 Sep - 07 Oct	Vueling Airlines
17 Sep - 07 Oct	Vueling Airlines
22 Sep - 10 Oct	Vueling Airlines
22 Sep - 07 Oct	Vueling Airlines

Also check the deals for one-way flights from Santiago 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 Santiago to Basel in September from 139€

Return flights