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

Return flights

23 Sep - 25 Sep	Delta
24 Sep - 26 Sep	Delta
29 Sep - 10 Oct	Avianca
20 Sep - 10 Oct	Avianca
24 Sep - 30 Sep	Avianca
17 Sep - 13 Oct	Avianca
23 Sep - 21 Oct	Frontier Airlines
22 Sep - 26 Sep	Frontier Airlines
23 Sep - 26 Sep	Frontier Airlines
25 Sep - 02 Oct	Avianca
16 Sep - 26 Sep	Avianca
22 Sep - 25 Sep	Avianca
19 Sep - 25 Oct	Avianca
13 Sep - 09 Oct	Avianca
17 Sep - 12 Oct	Frontier Airlines
10 Sep - 29 Sep	Avianca
11 Sep - 19 Sep	Avianca
10 Sep - 14 Sep	Avianca
29 Sep - 07 Oct	Delta

Also check the deals for one-way flights from San Francisco 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.

Book a cheap hotel in Lima

Cheap car rent in Lima

Cheapest return flights from San Francisco to Lima in September from 470€

Return flights