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

Return flights

27 Sep - 01 Oct	Ryanair
27 Sep - 29 Sep	Ryanair
24 Sep - 29 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
19 Sep - 22 Sep	Ryanair
28 Sep - 01 Oct	Vueling Airlines
30 Sep - 15 Oct	Vueling Airlines
27 Sep - 02 Oct	Ryanair
30 Sep - 14 Oct	Vueling Airlines
26 Sep - 15 Oct	Vueling Airlines
26 Sep - 14 Oct	Vueling Airlines
19 Sep - 23 Sep	Ryanair
17 Sep - 24 Sep	easyJet	direct
17 Sep - 23 Sep	Vueling Airlines
24 Sep - 28 Sep	Vueling Airlines
25 Sep - 15 Oct	Vueling Airlines
18 Sep - 22 Sep	Vueling Airlines
24 Sep - 14 Oct	Vueling Airlines
25 Sep - 14 Oct	Vueling Airlines
23 Sep - 28 Sep	Ryanair

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 166€

Return flights