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

One-Way flights

03 Dec	SriLankan Airlines
08 Dec	IndiGo
02 Dec	IndiGo
13 Dec	IndiGo
04 Dec	IndiGo
04 Dec	Air India	direct
03 Dec	Air India	direct
01 Dec	Singapore Airlines	direct
02 Dec	Air India	direct
10 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 $161

One-Way flights