Cheapest return flights from Washington to Buenos Aires in October from $622

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

Return flights

29 Oct - 05 Nov Avianca
29 Oct - 03 Nov Avianca
22 Oct - 29 Oct Copa
22 Oct - 03 Nov Copa
22 Oct - 24 Nov Copa
25 Oct - 02 Nov United
23 Oct - 05 Nov Copa
30 Oct - 30 Nov Copa
31 Oct - 30 Nov Copa

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

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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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