AirHint found the following cheapest one-way flights from Kuala Lumpur (KUL) to Singapore (SIN) in December 2025 (see full year).

One-Way flights

01 Dec	AirAsia	direct
21 Dec	Firefly	direct
12 Dec	Firefly	direct
14 Dec	Firefly	direct
15 Dec	Firefly	direct
17 Dec	Firefly	direct
04 Dec	Firefly	direct
24 Dec	Firefly	direct
27 Dec	Firefly	direct
25 Dec	Firefly	direct

Also check the deals for return flights from Kuala Lumpur to Singapore in December.

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 one-way flights from Kuala Lumpur to Singapore in December from 33€

One-Way flights