AirHint found the following cheapest return flights from Hong Kong (HKG) to Seattle (SEA) in October 2025 (see full year).
Return flights
| 23 Oct - 03 Nov | United | ||
| 26 Oct - 30 Oct | United | ||
| 25 Oct - 01 Nov | United | ||
| 30 Oct - 09 Nov | Air Canada | ||
| 23 Oct - 30 Oct | HK Express |
Also check the deals for one-way flights from Hong Kong to Seattle in October.
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