Cheapest return flights from Washington to Buenos Aires in May from $586

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

Return flights

10 May - 17 May Avianca
07 May - 15 May Copa
11 May - 17 May Copa
12 May - 17 May Copa
12 May - 18 May Copa
12 May - 19 May Copa
12 May - 20 May Copa
13 May - 20 May Copa
14 May - 20 May Copa
14 May - 24 May Copa

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

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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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