Find out what a flight from Boston to Seattle Lake Union might cost

Prices vary based on date, airline, and availability. Compare several options if you're flying between Boston and Seattle.

Select your dates to check current offers.

Try shifting your departure forward or backward by a day to find better options. If you’re looking for a good deal, consider flying outside peak hours as well.

Flights between Boston and Seattle: which airports can you choose?

The distance between Boston and Seattle is about 4003 km. Checking alternative airports can help lower the total cost of your trip.

• Airports in Boston: The only active airport in Boston is Boston - Logan.
• Airports in Seattle: Seattle is served by 2 airports - Boeing Field, Lake Union.

Choosing airports with fast connections to the city center can cut down total travel time. You can compare all flights from Boston airports to find the best option.

Plan your perfect flight from Boston to Seattle Lake Union

Jetcost gives you full control over your flight search. Filter by date, time, duration, price, and airline. See round-trip and one-way options from low-cost and full-service carriers and more.

Other popular destinations

Planning a trip to United States? Other frequent searches include: Atlanta, Los Angeles, Miami, New York City, Orlando.

Some airlines include baggage in the fare, others don’t — always check the details before booking. If you're looking for round-trip flights, you can easily see the most convenient combinations.