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

Return flights

28 Dec - 29 Jan	Delta
29 Dec - 08 Jan	Delta
28 Dec - 14 Jan	Delta
29 Dec - 09 Jan	Delta
31 Dec - 08 Jan	Delta
27 Dec - 16 Jan	Delta
26 Dec - 14 Jan	Delta
24 Dec - 31 Dec	Delta
30 Dec - 10 Jan	Ryanair
27 Dec - 10 Jan	Delta
28 Dec - 10 Jan	Delta
23 Dec - 30 Dec	Delta
25 Dec - 31 Dec	Air Canada
21 Dec - 31 Dec	Delta
21 Dec - 28 Dec	Delta
25 Dec - 28 Dec	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 883€

Return flights