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

Return flights

21 Aug - 27 Aug	Iberia
25 Aug - 06 Sep	KLM
15 Aug - 17 Aug	Air France
18 Aug - 31 Aug	Virgin Atlantic
08 Aug - 15 Aug	Virgin Atlantic
12 Aug - 29 Aug	jetBlue
21 Aug - 26 Aug	Virgin Atlantic
22 Aug - 23 Aug	Avianca
18 Aug - 24 Aug	Virgin Atlantic
23 Aug - 30 Aug	Avianca
25 Aug - 31 Aug	Iberia
23 Aug - 02 Sep	Vueling Airlines
07 Aug - 07 Sep	KLM

Also check the deals for one-way flights from London to Cartagena in August.

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 August from 941€

Return flights