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

Return flights

17 Oct - 06 Nov	Delta
14 Oct - 10 Nov	Avianca
21 Oct - 28 Oct	Avianca
02 Oct - 12 Oct	TAP
03 Oct - 05 Oct	KLM
25 Oct - 01 Nov	TAP
18 Oct - 01 Nov	TAP
21 Oct - 25 Oct	Avianca
23 Oct - 30 Oct	Avianca
23 Oct - 29 Oct	Avianca
25 Oct - 02 Nov	Avianca
09 Oct - 26 Oct	KLM
08 Oct - 18 Oct	KLM

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

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 October from $1047

Return flights