Flying from Boston to Seattle, WA can be expensive. Our search helps you compare cheap flights, airfare deals, and flight tickets across airlines and agencies so you can book at the best price.
We scan trusted travel agencies and airline booking systems for the route Boston - Seattle, WA (BOS - SEA). We do not sell tickets or add fees - you choose where to buy.
Airfares vary by date, time, and airport. Use filters to find the best option by departure/arrival time, number of stops, airline or alliance, and booking channel.
If your dates are flexible, check the low-fare calendar to find the cheapest days. Booking round-trip in one order often reduces fees, and prices usually rise as departure approaches.
We also recommend you to look through the prices for return tickets from Seattle, WA to Boston.
Airlines are flying from Boston to Seattle, WA
| Alaska Airlines | United Airlines |
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Frequently asked questions about flights from Boston to Seattle, WA
How long does the flight from Boston to Seattle, WA take?
Flight duration from Boston to Seattle, WA varies by route, airline, and number of stops. Direct flights are faster. Use our search to compare options.
Are there direct flights from Boston to Seattle, WA?
Availability of direct flights from Boston to Seattle, WA depends on the route and season. Use the "Direct" filter in search to see only direct options.
Which airlines fly from Boston to Seattle, WA?
Several airlines operate flights from Boston to Seattle, WA. On this page you see airlines serving this route. Our search compares prices across airlines and agencies.
What is the cheapest month to fly from Boston to Seattle, WA?
Prices from Boston to Seattle, WA vary by month and demand. On this page you see average prices by month. Use the low-fare calendar and monthly table to find the cheapest dates.