Cheapest return flights from Washington to Buenos Aires in March from $608

AirHint found the following cheapest return flights from Washington (IAD) to Buenos Aires (EZE) in March 2026 (see full year).

Return flights

16 Mar - 19 Mar Copa
03 Mar - 10 Mar United
15 Mar - 19 Mar Delta
22 Mar - 29 Mar Copa
23 Mar - 31 Mar Copa
25 Mar - 31 Mar LATAM Airlines Group
04 Mar - 08 Mar LATAM Airlines Group
03 Mar - 08 Mar LATAM Airlines Group
09 Mar - 15 Mar LATAM Airlines Group
06 Mar - 13 Mar United
27 Mar - 27 Apr Allegiant Air
27 Mar - 10 Apr LATAM Airlines Group
28 Mar - 04 Apr Frontier Airlines
28 Mar - 01 Apr Frontier Airlines

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

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