AirHint found the following cheapest return flights from London (LCY) to Lima (LIM) in September 2025 (see full year).

Return flights

22 Sep - 06 Oct	KLM
09 Sep - 16 Sep	KLM
21 Sep - 06 Oct	KLM
03 Sep - 01 Oct	KLM
04 Sep - 01 Oct	KLM
22 Sep - 30 Sep	KLM
22 Sep - 09 Oct	KLM
20 Sep - 06 Oct	KLM
09 Sep - 18 Sep	KLM
02 Sep - 23 Sep	KLM
09 Sep - 17 Sep	KLM
01 Sep - 21 Sep	KLM
07 Sep - 21 Sep	KLM
01 Sep - 25 Sep	KLM
04 Sep - 11 Sep	KLM
11 Sep - 24 Sep	KLM
20 Sep - 20 Oct	KLM
20 Sep - 05 Oct	KLM
27 Sep - 11 Oct	KLM
21 Sep - 04 Oct	KLM

Also check the deals for one-way flights from London to Lima 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 Lima in September from $1211

Return flights