AirHint found the following cheapest return flights from Newcastle (NCL) to Singapore (SIN) in September 2025 (see full year).

Return flights

17 Sep - 28 Sep	Ryanair
22 Sep - 29 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
01 Sep - 17 Sep	Lufthansa
16 Sep - 21 Sep	Ryanair
05 Sep - 14 Sep	Ryanair
28 Sep - 11 Oct	Aer Lingus
04 Sep - 08 Sep	Air France
18 Sep - 22 Sep	Air France
30 Sep - 08 Oct	Air France
28 Sep - 05 Oct	British Airways
26 Sep - 28 Sep	Emirates

Also check the deals for one-way flights from Newcastle to Singapore 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 Newcastle to Singapore in September from 631€

Return flights