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

Return flights

02 Dec - 09 Dec	KLM
03 Dec - 10 Dec	KLM
08 Dec - 15 Dec	KLM
04 Dec - 11 Dec	KLM
01 Dec - 08 Dec	Ryanair
09 Dec - 16 Dec	Aegean Airlines
06 Dec - 13 Dec	Ryanair
07 Dec - 14 Dec	KLM
05 Dec - 12 Dec	Wizz Air Malta
16 Dec - 23 Jan	Etihad Airways
10 Dec - 17 Dec	Ryanair
30 Dec - 13 Jan	Etihad Airways
30 Dec - 12 Jan	Etihad Airways
10 Dec - 02 Jan	Ryanair
10 Dec - 05 Jan	Ryanair
30 Dec - 14 Jan	Etihad Airways
12 Dec - 02 Jan	Aegean Airlines
07 Dec - 05 Jan	Wizz Air Malta
28 Dec - 12 Jan	Ryanair
26 Dec - 15 Jan	Aegean Airlines

Also check the deals for one-way flights from Lisbon 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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Lisbon to Singapore in December from 594€

Return flights