AirHint found the following cheapest return flights from Washington (IAD) to Santiago (SCL) in January 2026 (see full year).
Return flights
| 17 Jan - 29 Jan | Frontier Airlines | ||
| 04 Jan - 24 Jan | Frontier Airlines | ||
| 16 Jan - 26 Jan | Frontier Airlines | ||
| 10 Jan - 17 Jan | Avianca | ||
| 05 Jan - 09 Jan | Avianca | ||
| 15 Jan - 22 Jan | Copa |
Also check the deals for one-way flights from Washington to Santiago in January.
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