AirHint found the following cheapest one-way flights from Seattle (SEA) to Tokyo (HND) in December 2026 (see full year).
One-Way flights
| 06 Dec | Delta | direct | |
| 14 Dec | United | direct | |
| 27 Dec | Delta | direct | |
| 29 Dec | Delta | direct | |
| 02 Dec | Delta | direct | |
| 23 Dec | United | direct | |
| 22 Dec | Korean Air | ||
| 31 Dec | Delta | direct | |
| 11 Dec | ANA | direct | |
| 22 Dec | United | direct |
Also check the deals for return flights from Seattle to Tokyo in December.
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