AirHint found the following cheapest return flights from London (LHR) to Cartagena (CTG) in December 2025 (see full year).

Return flights

04 Dec - 09 Dec	jetBlue
09 Dec - 24 Dec	SWISS
08 Dec - 31 Dec	Delta
30 Dec - 13 Jan	Delta
02 Dec - 07 Dec	Avianca
09 Dec - 23 Dec	Lufthansa
11 Dec - 29 Dec	TAP
09 Dec - 30 Dec	Lufthansa
10 Dec - 17 Dec	Air Canada
30 Dec - 08 Jan	Scandinavian Airlines
08 Dec - 19 Dec	Avianca
13 Dec - 20 Dec	Finnair
25 Dec - 01 Jan	Avianca
26 Dec - 05 Jan	Air Canada
27 Dec - 05 Jan	Air Canada
25 Dec - 03 Jan	Vueling Airlines
20 Dec - 10 Jan	American Airlines
23 Dec - 04 Jan	Brussels Airlines

Also check the deals for one-way flights from London to Cartagena 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 Cartagena in December from 636€

Return flights