AirHint found the following cheapest one-way flights from Seattle (SEA) to Hanoi (HAN) in November 2025 (see full year).
One-Way flights
| 02 Nov | Philippine Airlines | ||
| 03 Nov | Korean Air | ||
| 19 Nov | Asiana Airlines | ||
| 20 Nov | Air Canada |
Also check the deals for return flights from Seattle to Hanoi in November.
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