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

Return flights

03 Dec - 10 Dec	Brussels Airlines
09 Dec - 14 Dec	Air Canada
01 Dec - 09 Dec	Air Canada
26 Dec - 16 Jan	Delta
26 Dec - 14 Jan	Delta
30 Dec - 20 Jan	Delta
24 Dec - 09 Jan	Delta
28 Dec - 14 Jan	Delta
28 Dec - 10 Jan	Delta
26 Dec - 17 Jan	Delta
14 Dec - 17 Jan	TAP
07 Dec - 14 Dec	Air Canada
27 Dec - 10 Jan	Delta
27 Dec - 11 Jan	Delta
02 Dec - 07 Dec	Aer Lingus
08 Dec - 15 Dec	TAP
07 Dec - 15 Dec	Iberia
01 Dec - 15 Dec	Lufthansa
12 Dec - 21 Dec	TAP
14 Dec - 23 Dec	Finnair

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 790€

Return flights