Cheapest return flights from Washington to Buenos Aires in December from 543€

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

Return flights

11 Dec - 23 Dec Delta
09 Dec - 19 Dec Copa
14 Dec - 24 Dec Avianca
13 Dec - 24 Dec Avianca
14 Dec - 16 Dec Frontier Airlines
13 Dec - 20 Dec Avianca
29 Dec - 07 Jan Delta
16 Dec - 15 Jan Avianca
28 Dec - 02 Jan Avianca
24 Dec - 05 Jan United
19 Dec - 01 Jan LATAM Airlines Group

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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