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

Return flights

26 Sep - 11 Oct	Delta
26 Sep - 29 Sep	Virgin Atlantic
27 Sep - 13 Oct	TAP
19 Sep - 17 Oct	Avianca
24 Sep - 26 Oct	Avianca
23 Sep - 30 Sep	Avianca
25 Sep - 28 Sep	Virgin Atlantic
23 Sep - 26 Sep	Avianca

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

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 September from $1048

Return flights