Cheap flights from Boston to Seattle Lake Union

Flights tailored to your budget

Selected dates may not give results due to COVID-19. We suggest you change the dates.
Multi-city Round trip One way
Round trip
One way
Multi-city
From
No results match your search criteria
To
No results match your search criteria
{{ weekDay }}
Dates
{{ panel.label }}
Looking for a one-way flight?

Flexible dates can save you money

Explore nearby dates to find lower fares

{{ fromDate | dateToLongNamedDate }}
?
Flexible dates
Depart {{ flexibleFromDateLabel }}
{{ option.label }}
?
Return {{ flexibleToDateLabel }}
{{ option.label }}
Passengers / Class
Number of passengers
Adult
{{ adults }}
Children
{{ children }}
Infants
{{ infants }}
Class
Economy
Available for Economy only
New Multi-city experience

Discover a new Multi-city search experience from Jetcost, designed to handle more complex itineraries. By continuing, you’ll be taken to a dedicated page powered by Kiwi.com.
How do we get the info you see here? Please note that we offer an online comparison service and that all information and prices regarding services and/or products available on our website are provided by our third-party partners. We do our best to show you up-to-date information, but please note that we are not responsible for the completeness or accuracy of the information published, so please check all conditions carefully on the website of the partner before making a booking. Please check our Terms and Conditions for more details. Read more

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

Flight prices from Boston to Seattle change depending on demand and time of booking.

Select your dates to check current offers.

Flying at off-peak hours — such as early morning or late evening — can help you save. Also, the best deals tend to appear in the weeks leading up to departure.

Are there alternative airports near Boston and Seattle?

The two cities are about 4003 km apart. Looking beyond the main airport might reveal better options.

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

Many smaller airports are connected by direct buses or shuttles, often at low cost. If Seattle has more than one airport, you can pick the most convenient for your destination.

Flights from Boston - Logan to Seattle - Lake Union

Compare flights from Boston to Seattle Lake Union with advanced filters

Find your ideal flight using Jetcost. Select whether you want nonstop or connecting flights, round-trip or one-way, and filter by airline, price, or booking site.

Other popular destinations

Looking for alternatives in United States? Travelers also liked: Atlanta, Los Angeles, Miami, New York City, Orlando.

If you have a preferred time to leave or arrive, filters can help you show only the matching flights. You can also filter by your favorite airline and see only those deals.
Frequently Asked Questions

Frequently asked questions about flights from Boston to Seattle Lake Union.

How much does an airline ticket from Boston to Seattle Lake Union cost?

Flight prices can vary a lot depending on the period and destination. At the moment, this information is not available for flights from Boston to Seattle Lake Union.

How far is Boston from Seattle?

Boston is about 4003 km from Seattle.

What are the airports in Seattle?

Seattle has 2 airports: Boeing Field, Lake Union.

What are the airports in Boston?

Boston has one airport: Boston - Logan.

What are the most popular cities in United States?

The most popular cities in United States according to our users' searches are: Atlanta, Los Angeles, Miami, New York City, Orlando.

When should I book a flight from Boston to Seattle?

This information is not available at the moment.

What is the cheapest month to fly from Boston to Seattle?

This information is not available at the moment.

What is the most expensive month to fly from Boston to Seattle?

This information is not available at the moment.

What is the best day of the week to fly from Boston to Seattle?

This information is not available at the moment.