An Alaska Airlines plane taking off with a snow-capped mountain in the background.

NZ$425 Cheap Flights Boston to Seattle (BOS-SEA)

Photo by Port of Seattle
Open Photo by Port of Seattle

Cheap Flights from Boston to Seattle (BOS-SEA)

Prices were available within the past 7 days and start at NZ$425 for one-way flights, for the period specified. Prices and availability are subject to change.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

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BOS to SEA Flights

Ready to have the time of your life? When you use Expedia.co.nz to book cheap flights from Boston to Seattle, you can experience all of the attractions this city is famous for, or escape the crowds and explore the outskirts on your own. Our amazing deals on airfare help you save big on tickets, so you can spend more of your hard-earned money enjoying local entertainment options. Even if you seek to score a seat on one of the last-minute BOS to SEA flights, you’ll still save a bundle when compared to the competition.

See for yourself how simple it is to book the holiday of your dreams to Seattle by using our helpful search engine today. We have the largest inventory of flights on the internet, and our intuitive tools make it easy to find affordable airfare at any time of year.

Prefer to fly with a particular airline? Our extensive network of travel partners ensures that you can travel with whichever carrier you prefer. So if you’ve been searching for cheap flights to Seattle from Boston, Expedia.co.nz has exactly what you’re looking for. As the world’s leader in travel, we’re committed to helping you get the best rates around.

Frequently Asked Questions

How much is a flight from Logan Intl. Airport to SEA?

If you're planning on travelling between Logan Intl. Airport (BOS) and Sea-Tac Airport, round-trip journeys start from . This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.

Do I need to pay a cancellation fee if I cancel my flight from BOS to SEA?

The majority of flights can be cancelled online, but whether you are charged a fee differs between airlines. If you do have to cancel your trip, follow the instructions in the Customer Service Portal.

How do I find cheap flights from Logan Intl. Airport to SEA that have flexible change policies?

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.

How far is the flight from Logan Intl. Airport to Sea-Tac Airport?

With around 4 000 kilometres separating Boston and SeaTac, your flight will be a long one. Pack wisely to make your time on board more comfortable. Things like a sleep mask and some noise-cancelling headphones can make all the difference.

Which airlines fly direct from BOS to Seattle - Tacoma Intl. Airport (SEA)?

With 117 flights every month operating from Logan Intl. Airport to Sea-Tac Airport, Alaska Airlines (AS) is a popular choice. Love some more options? Check out the airfares with Delta Air Lines (DL). This carrier offers 78 flights a month between these airports.

Are Logan Intl. Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?

Late planners can sometimes pick up a bargain, with some super cheap fares from Logan Intl. Airport to Sea-Tac Airport arising a few weeks prior to the departure date. If you'd rather book ahead of time, Expedia compares and updates all the best flight deals continuously — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines advertise prices that far in advance.

Travel information

Origin airport
Logan International Airport
Destination airport
Seattle-Tacoma International Airport
Distance
4,003 km away
Airlines serving
Alaska Airlines, Delta, American Airlines, United, Southwest Airlines, Sun Country Airlines, JetBlue Airways
Popular airline
Alaska Airlines
Return price
NZ$425
Average flight time
6 hours 27 mins
*Available to Expedia members.