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

One-Way flights

10 Dec	AirAsia X
02 Dec	Air India	direct
09 Dec	Air India	direct
04 Dec	Air India	direct
10 Dec	Air India	direct
05 Dec	Air India	direct
08 Dec	IndiGo
17 Dec	SriLankan Airlines
03 Dec	IndiGo
11 Dec	Air India	direct

Also check the deals for return flights from Delhi 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 Delhi to Singapore in December from $140

One-Way flights