AirHint found the following cheapest return flights from Brisbane (BNE) to Seattle (SEA) in January 2026 (see full year).
Return flights
| 23 Jan - 08 Feb | Air Canada | ||
| 16 Jan - 29 Jan | Delta | ||
| 12 Jan - 28 Jan | United | ||
| 14 Jan - 21 Jan | United |
Also check the deals for one-way flights from Brisbane to Seattle in January.
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