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

Return flights

09 Dec - 12 Dec	British Airways
09 Dec - 12 Dec	British Airways	direct
01 Dec - 07 Dec	Iberia
09 Dec - 23 Dec	TAP	direct
01 Dec - 07 Dec	British Airways	direct
11 Dec - 14 Dec	TAP	direct
04 Dec - 06 Dec	TAP	direct
12 Dec - 15 Dec	British Airways	direct
01 Dec - 15 Dec	British Airways	direct
01 Dec - 15 Dec	Iberia
28 Dec - 18 Jan	Iberia
28 Dec - 18 Jan	TAP	direct
23 Dec - 10 Jan	Iberia
30 Dec - 03 Jan	KLM
23 Dec - 09 Jan	Iberia
23 Dec - 09 Jan	TAP	direct
23 Dec - 10 Jan	TAP	direct
21 Dec - 10 Jan	TAP	direct
30 Dec - 02 Jan	Iberia
26 Dec - 03 Jan	Iberia

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from London to Lisbon in December from 157€

Return flights