How much is a flight from Boston to Seattle Lake Union?

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

Pick a travel date to see today’s available fares.

Fares change often — checking several times throughout the week can make a big difference. Booking in advance often means access to lower prices for the Boston - Seattle Lake Union route.

Which airports are most convenient between Boston and Seattle?

Whether it’s cost or connection time, the right airport combination can make a difference.

• Airports in Boston: Only Boston - Logan is currently active.
• Airports in Seattle: In Seattle you can fly to/from 2 airports - Boeing Field, Lake Union.

In some cases, flying into a secondary airport can also reduce transfer costs. Connections from multiple airports give you more flight options and airlines.

Customize your flight from Boston to Seattle Lake Union

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from Ryanair, Easyjet, British Airways, Expedia, eDreams, and more.

Other popular destinations

Thinking about United States? You might also consider: Atlanta, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.