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

Return flights

25 Sep - 05 Oct	Avianca
24 Sep - 22 Oct	Avianca
01 Sep - 24 Sep	Avianca
17 Sep - 24 Sep	Avianca
26 Sep - 08 Oct	Avianca
15 Sep - 22 Sep	Avianca
15 Sep - 27 Sep	Avianca
15 Sep - 01 Oct	Avianca
08 Sep - 30 Sep	Avianca
02 Sep - 30 Sep	Avianca
25 Sep - 30 Sep	Avianca
23 Sep - 21 Oct	Avianca
25 Sep - 04 Oct	Avianca
25 Sep - 06 Oct	Avianca
05 Sep - 15 Sep	British Airways
10 Sep - 17 Sep	British Airways
06 Sep - 19 Sep	British Airways
26 Sep - 05 Oct	British Airways
22 Sep - 19 Oct	Avianca
25 Sep - 21 Oct	Avianca

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 $780

Return flights