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

One-Way flights

05 Dec	Thai AirAsia	direct
18 Dec	Thai AirAsia	direct
02 Dec	Thai AirAsia	direct
17 Dec	Scoot Tigerair	direct
16 Dec	Thai AirAsia	direct
11 Dec	Scoot Tigerair	direct
15 Dec	Thai AirAsia	direct
13 Dec	Scoot Tigerair	direct
10 Dec	Scoot Tigerair	direct
12 Dec	Scoot Tigerair	direct

Also check the deals for return flights from Bangkok 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 Bangkok to Singapore in December from $72

One-Way flights