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

Return flights

08 Dec - 29 Jan	LATAM Airlines Group
08 Dec - 29 Dec	Delta
06 Dec - 29 Dec	Delta
15 Dec - 23 Dec	LATAM Airlines Group
06 Dec - 27 Dec	United
06 Dec - 28 Dec	LATAM Airlines Group
06 Dec - 06 Dec	Delta
12 Dec - 15 Jan	LATAM Airlines Group
26 Dec - 30 Dec	LATAM Airlines Group
25 Dec - 31 Dec	Delta
28 Dec - 28 Dec	Delta
22 Dec - 12 Jan	LATAM Airlines Group
13 Dec - 10 Jan	Air Canada
22 Dec - 31 Dec	LATAM Airlines Group
13 Dec - 03 Jan	Air Canada
06 Dec - 03 Jan	Air Canada
08 Dec - 03 Jan	Air Canada
23 Dec - 03 Jan	Air Canada
20 Dec - 10 Jan	Air Canada

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 327€

Return flights