AirHint found the following cheapest one-way flights from Washington (IAD) to Buenos Aires (EZE) in October 2025 (see full year).
One-Way flights
| 29 Oct | United | ||
| 25 Oct | United | ||
| 22 Oct | Copa | ||
| 26 Oct | Copa | ||
| 28 Oct | Copa | ||
| 21 Oct | United | ||
| 23 Oct | Copa | ||
| 31 Oct | Copa | ||
| 20 Oct | Copa |
Also check the deals for return 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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