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

Return flights

07 Sep - 20 Sep	KLM
08 Sep - 20 Sep	KLM
08 Sep - 22 Sep	KLM
07 Sep - 22 Sep	KLM
01 Sep - 22 Sep	KLM
16 Sep - 29 Sep	SWISS
08 Sep - 18 Sep	KLM
15 Sep - 25 Sep	SWISS
14 Sep - 21 Sep	KLM
21 Sep - 05 Oct	KLM
21 Sep - 30 Sep	KLM
15 Sep - 05 Oct	KLM
21 Sep - 04 Oct	KLM
17 Sep - 01 Oct	KLM
24 Sep - 19 Oct	KLM
19 Sep - 06 Oct	KLM
27 Sep - 05 Oct	KLM
04 Sep - 02 Oct	KLM
27 Sep - 14 Oct	KLM
10 Sep - 01 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 882€

Return flights