AirHint found the following cheapest one-way flights from Washington (IAD) to Tokyo (HND) in December 2025 (see full year).
One-Way flights
| 05 Dec | Air Canada | ||
| 10 Dec | Porter Airlines (Canada) Ltd | ||
| 30 Dec | United | ||
| 29 Dec | United | ||
| 28 Dec | United | ||
| 23 Dec | Frontier Airlines | ||
| 30 Dec | United | direct | |
| 29 Dec | United | direct | |
| 28 Dec | United | direct | |
| 06 Dec | United |
Also check the deals for return flights from Washington to Tokyo in December.
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