AirHint found the following cheapest return flights from Washington (IAD) to Buenos Aires (EZE) in November 2025 (see full year).
Return flights
| 28 Nov - 12 Dec | Copa | ||
| 10 Nov - 17 Nov | Avianca | ||
| 06 Nov - 11 Nov | Copa | ||
| 07 Nov - 11 Nov | Copa | ||
| 23 Nov - 28 Nov | Copa |
Also check the deals for one-way flights from Washington to Buenos Aires in November.
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