AirHint found the following cheapest return flights from Basel (BSL) to Singapore (SIN) in August 2025 (see full year).

Return flights

26 Aug - 11 Sep	Turkish Airlines
26 Aug - 09 Sep	KLM
27 Aug - 11 Sep	Turkish Airlines
26 Aug - 12 Sep	Air France
27 Aug - 04 Sep	Turkish Airlines
27 Aug - 30 Aug	AJet
26 Aug - 10 Sep	British Airways
19 Aug - 26 Aug	SunExpress
21 Aug - 28 Aug	Turkish Airlines
17 Aug - 25 Aug	Turkish Airlines

Also check the deals for one-way flights from Basel to Singapore in August.

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 Singapore in August from 542€

Return flights