Cheapest return flights from Washington to Buenos Aires in March from $639

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

Return flights

04 Mar - 16 Mar Delta
08 Mar - 22 Mar Delta
25 Mar - 31 Mar LATAM Airlines Group
26 Mar - 31 Mar LATAM Airlines Group
14 Mar - 22 Mar Avianca
20 Mar - 27 Mar LATAM Airlines Group
02 Mar - 14 Mar Copa

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

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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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