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

Return flights

06 Dec - 21 Dec	SWISS
02 Dec - 07 Dec	Avianca
02 Dec - 09 Dec	Avianca
26 Dec - 12 Jan	Delta
28 Dec - 14 Jan	Delta
11 Dec - 21 Dec	Vueling Airlines
03 Dec - 08 Dec	Avianca
12 Dec - 21 Dec	TAP
17 Dec - 24 Dec	SWISS
24 Dec - 09 Jan	Delta
23 Dec - 11 Jan	SWISS
27 Dec - 10 Jan	Delta
30 Dec - 06 Jan	Delta
21 Dec - 29 Dec	KLM
20 Dec - 12 Jan	Delta
15 Dec - 22 Dec	Avianca
13 Dec - 05 Jan	Vueling Airlines
19 Dec - 28 Dec	Vueling Airlines
19 Dec - 11 Jan	KLM
09 Dec - 05 Jan	Vueling 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 $1153

Return flights