AirHint found the following cheapest return flights from Cologne (CGN) to Singapore (SIN) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec	Turkish Airlines
01 Dec - 12 Dec	Turkish Airlines
07 Dec - 23 Dec	AJet
10 Dec - 21 Dec	Pegasus Airlines
10 Dec - 26 Dec	Turkish Airlines
13 Dec - 20 Dec	AJet
22 Dec - 29 Dec	Ryanair
25 Dec - 06 Jan	Pegasus Airlines
22 Dec - 06 Jan	Ryanair
23 Dec - 01 Jan	Pegasus Airlines
25 Dec - 05 Jan	Pegasus Airlines
29 Dec - 03 Jan	Pegasus Airlines
24 Dec - 05 Jan	Eurowings
23 Dec - 05 Jan	Pegasus Airlines
10 Dec - 12 Dec	Turkish Airlines
10 Dec - 11 Dec	Turkish Airlines
22 Dec - 03 Jan	Turkish Airlines
15 Dec - 04 Jan	Turkish Airlines
22 Dec - 04 Jan	Turkish Airlines

Also check the deals for one-way flights from Cologne 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 return flights from Cologne to Singapore in December from 612€

Return flights