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

Return flights

30 Dec - 13 Jan	Avianca
10 Dec - 21 Dec	United
12 Dec - 16 Dec	Frontier Airlines
30 Dec - 12 Jan	Avianca
12 Dec - 05 Jan	Frontier Airlines
29 Dec - 10 Jan	Avianca
30 Dec - 06 Jan	Avianca
13 Dec - 05 Jan	Frontier Airlines
12 Dec - 09 Jan	Frontier Airlines
15 Dec - 08 Jan	Hawaiian Airlines
12 Dec - 06 Jan	Frontier Airlines
24 Dec - 26 Dec	Aeromexico
24 Dec - 07 Jan	Hawaiian Airlines
19 Dec - 28 Dec	Frontier Airlines

Also check the deals for one-way flights from San Francisco to Lima in December.

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 San Francisco to Lima in December from 546€

Return flights