AirHint found the following cheapest return flights from Washington (IAD) to Hanoi (HAN) in January 2026 (see full year).
Return flights
| 15 Jan - 23 Jan | Frontier Airlines | ||
| 08 Jan - 22 Jan | Turkish Airlines | ||
| 08 Jan - 31 Jan | Delta | ||
| 08 Jan - 15 Jan | Delta | ||
| 26 Jan - 15 Feb | Delta |
Also check the deals for one-way flights from Washington to Hanoi in January.
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