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

Return flights

16 Sep - 23 Sep	SWISS
30 Sep - 14 Oct	SWISS
17 Sep - 12 Oct	KLM
16 Sep - 06 Oct	KLM
15 Sep - 22 Sep	Lufthansa
15 Sep - 05 Oct	KLM
19 Sep - 18 Oct	KLM
19 Sep - 27 Sep	Virgin Atlantic
23 Sep - 14 Oct	ITA Airways
15 Sep - 21 Sep	KLM
17 Sep - 27 Sep	KLM
16 Sep - 24 Sep	KLM
18 Sep - 27 Sep	Virgin Atlantic
26 Sep - 03 Oct	Virgin Atlantic
17 Sep - 23 Sep	Virgin Atlantic
17 Sep - 22 Sep	KLM
25 Sep - 02 Oct	Virgin Atlantic
15 Sep - 27 Sep	KLM
22 Sep - 12 Oct	KLM
19 Sep - 09 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 827€

Return flights