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

Return flights

15 Dec - 23 Dec	Frontier Airlines
15 Dec - 19 Dec	Frontier Airlines
05 Dec - 12 Dec	Delta
04 Dec - 11 Dec	Delta
31 Dec - 13 Jan	LATAM Airlines Group
24 Dec - 31 Dec	Frontier Airlines
12 Dec - 12 Jan	Frontier Airlines
13 Dec - 19 Dec	LATAM Airlines Group
25 Dec - 11 Jan	Frontier Airlines
15 Dec - 20 Dec	Delta
29 Dec - 05 Jan	Frontier Airlines
28 Dec - 05 Jan	LATAM Airlines Group
27 Dec - 03 Jan	Frontier Airlines
13 Dec - 20 Dec	LATAM Airlines Group
21 Dec - 10 Jan	Frontier Airlines
26 Dec - 04 Jan	Delta

Also check the deals for one-way flights from Chicago 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 Chicago to Lima in December from 530€

Return flights