AirHint found the following cheapest return flights from London (LCY) to Lisbon (LIS) in December 2026 (see full year).

Return flights

03 Dec - 07 Dec	KLM
09 Dec - 23 Dec	KLM
01 Dec - 07 Dec	KLM
01 Dec - 15 Dec	KLM
30 Dec - 13 Jan	KLM
10 Dec - 14 Dec	KLM
09 Dec - 12 Dec	KLM
11 Dec - 14 Dec	Luxair
04 Dec - 06 Dec	KLM
14 Dec - 17 Dec	Iberia
28 Dec - 18 Jan	KLM
12 Dec - 15 Dec	KLM
26 Dec - 03 Jan	KLM
23 Dec - 04 Jan	Lufthansa
19 Dec - 04 Jan	KLM
20 Dec - 03 Jan	KLM
27 Dec - 07 Jan	KLM
19 Dec - 05 Jan	KLM
23 Dec - 02 Jan	Luxair
19 Dec - 02 Jan	Luxair

Also check the deals for one-way flights from London to Lisbon 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 London to Lisbon in December from 197€

Return flights