Cheapest return flights from Washington to Buenos Aires in December from $937

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

Return flights

05 Dec - 15 Jan LATAM Airlines Group
05 Dec - 16 Jan LATAM Airlines Group
15 Dec - 23 Dec LATAM Airlines Group
05 Dec - 17 Jan LATAM Airlines Group
05 Dec - 18 Jan LATAM Airlines Group
27 Dec - 17 Jan LATAM Airlines Group
28 Dec - 02 Jan LATAM Airlines Group
04 Dec - 04 Jan LATAM Airlines Group
24 Dec - 04 Jan LATAM Airlines Group
16 Dec - 03 Jan LATAM Airlines Group
13 Dec - 24 Jan LATAM Airlines Group

Also check the deals for one-way flights from Washington to Buenos Aires in December.

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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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