Cheapest return flights from Washington to Buenos Aires in December from $716

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

Return flights

04 Dec - 20 Dec Avianca
24 Dec - 08 Jan Avianca
25 Dec - 07 Jan Avianca
28 Dec - 02 Jan Avianca
16 Dec - 07 Jan LATAM Airlines Group
22 Dec - 30 Dec Avianca
22 Dec - 08 Jan Avianca
18 Dec - 07 Jan Avianca
27 Dec - 10 Jan Copa
17 Dec - 10 Jan Copa
19 Dec - 10 Jan Avianca
20 Dec - 10 Jan Copa

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

Skyscanner

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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