Alaska Airlines Flights from Boston to Seattle
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1 Passenger
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Lowest fares from Boston to Seattle
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One-way low-fare flights Boston to Seattle.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Mar 25, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Mar 27, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Mar 28, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Mar 30, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Apr 2, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Apr 7, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Apr 8, 2026 | From $154 Seen: 1 day ago | |
| Boston (BOS) | Seattle (SEA) | One-way | Saver | Depart: Apr 25, 2026 | From $154 Seen: 1 day ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.