$110 Cheap Flights from Seattle (SEA) to Boston (BOS)

Bundle Your Flight + Hotel & Save!

Featured airlines

Top nine airline logos for desktop

Cheap Flights from Seattle to Boston (SEA-BOS)

Prices were available within the past 7 days and start at $110 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Alaska Airlines
Spirit Airlines
JetBlue Airways
Spirit Airlines
Spirit Airlines
Spirit Airlines
Alaska Airlines
JetBlue Airways
Spirit Airlines
Flights from Seattle (SEA) to Boston (BOS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$218
Distance
2487 mi

Seattle to Boston Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to Boston offer the perfect respite. Not only does exploring Boston provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to Boston may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from SEA to BOS today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Boston are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Boston more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Boston is $110 now!

Frequently asked questions

How long does it take to fly from Sea-Tac Airport to Logan Intl. Airport (BOS)?
With Alaska Airlines, a direct flight takes about 5 hours and 14 minutes. Step on board the 3:45PM flight from Sea-Tac Airport and come in to land at Logan Intl. Airport at 11:59PM. Get your hands on a top deal on this and other routes when you book your ticket with Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) last minute?
Being a spontaneous soul is a terrific way to travel the world, but it’s not necessarily the wisest way to find a cheap fare. Consider booking your SEA to BOS journey well ahead of time rather than leaving it until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. You can unleash your spontaneous side when you get to your destination!
What airline has the least delays from Sea-Tac Airport to Logan Intl. Airport?
If you don’t want to be stuck in the departure lounge — or worse, have your trip upended due to a flight delay — choose Alaska Airlines. Around 80% of its Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS) services land on time. You can check your flight status before traveling to the airport through the Expedia App. It’ll also give you real-time notifications about gate number changes and directions to your hotel. You’ll have all the details in your pocket with our handy travel companion.
What airports do you fly into for Boston from Seattle?
With Logan Intl. Airport (BOS), Manchester-Boston Regional Airport (MHT) and Provincetown Municipal Airport (PVC) to select from, traveling from Seattle to Boston is easy. The city’s main gateway, Logan Intl. Airport (BOS), is roughly 2 mi east of the center. As well as the price of fares, consider factors like the ease of getting from the airport and the distance to your hotel before deciding where you’ll get off the plane. Get your Boston vacation off to an awesome start by checking out Fenway Park and Boston Common.
What are the most popular departure times for flights from Sea-Tac Airport to Logan Intl. Airport (BOS)?
Between 9:00 PM - 10:00 PM is when you’ll find the most JetBlue Airways flights taking off from SEA to Logan Intl. Airport. Our top tip? Get up and away early. With air traffic yet to build up around airports, your chances of hopping on a delay-free flight are higher.
Can I change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS)?
Life can throw a spanner in your plans, so Expedia is here to help make amending your journey as easy as possible. First, find your Seattle - Tacoma Intl. Airport (SEA) to BOS itinerary through the Expedia Trips portal and read the ticket rules to see if change fees apply. If you booked your fare in the last 24 hours, some airlines will let you cancel without charge and organize new flights. If you bought your fare more than 24 hours ago, get in touch with us through our Customer Service portal to find out your options.
Boston nearby Airports
Seattle nearby Airports

Seattle Paine Field Intl. Airport

*Available to One Key members.