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

Return flights

05 Dec - 08 Dec	Delta
06 Dec - 09 Dec	United
08 Dec - 14 Dec	United
09 Dec - 16 Dec	United
11 Dec - 14 Dec	Delta
09 Dec - 14 Dec	United
10 Dec - 14 Dec	United
18 Dec - 24 Dec	Frontier Airlines
22 Dec - 12 Jan	LATAM Airlines Group
28 Dec - 01 Jan	LATAM Airlines Group
23 Dec - 13 Jan	Frontier Airlines
22 Dec - 26 Dec	LATAM Airlines Group
22 Dec - 13 Jan	Frontier Airlines
18 Dec - 22 Dec	United
28 Dec - 04 Jan	LATAM Airlines Group
18 Dec - 08 Jan	United
27 Dec - 04 Jan	LATAM Airlines Group
22 Dec - 04 Jan	LATAM Airlines Group
19 Dec - 04 Jan	United
09 Dec - 13 Jan	United

Also check the deals for one-way flights from Washington 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 Washington to Lima in December from 391€

Return flights