Cheap Flights from Seattle (SEA) to Boston Logan International (BOS)

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Flight deals from Seattle to Boston Logan International

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Boston Logan International? Find the lowest prices on one-way and round-trip tickets right here.

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Find the cheapest month to fly from Seattle to Boston Logan International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Boston Logan International flights are currently cheapest in May.

Direct flights from Seattle to Boston Logan International

Seattle to Boston Logan International: Alternative routes

Compare routes from Seattle to Boston below. You may find an airport to fly into that's cheaper, faster, or easier than Boston Logan International.

Seattle to Boston: Flight information

The things to know before you go.
Cheapest flight found$212
Cheapest month to flyMay
Average flight time5 hrs, 25 mins
Most popular airlineQatar Airways
Average flights per week209

Finding cheap flights from Seattle to Boston Logan International: Frequently asked questions

The best price we found for a round-trip flight from Seattle to Boston Logan International is $212. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 25 minutes is the average flight time from Seattle to Boston Logan International.
Qatar Airways, Air Tahiti Nui and Delta fly direct from Seattle to Boston Logan International.
There are 209 flights per week flying from Seattle to Boston Logan International, as of April 2024.
The cheapest month to fly from Seattle to Boston Logan International is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Boston Logan International Airport on Tuesday, May 14, 2024.
Yes – the average flight time is 5 hours and 25 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Boston Logan International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Boston Logan International is around 40 days in advance, so don’t leave your flight to the last minute.

It's time to plan your cross-country trip to Boston. Don't you want the best airfare deals possible? The cheapest flights from Seattle to Boston Logan International depart during the week. Using the cheapest month search featurewe found the lowest priced airline tickets for this trip during the month of December.

Departing from Seattle's Airports

There are two main airports serving Seattle. These are SeaTac International Airport (SEA), and Seattle Lake Union Airport (LKE).

  • Seattle Lake Union (LKE)
  • Lake Union is also known as Kenmore Air Harbor Seaplane Base. It is located one nautical mile from downtown Seattle. This airport is small and serves a few thousand passengers each year who fly Kenmore Airlines. There is one snack counter located in the main airport building. There is a long-term parking lot available for departing passengers.

  • Seattle Tacoma International Airport (SEA)
  • Seattle Tacoma International Airport is also known as SeaTac Airport is located 24 miles north of Tacoma and 12 miles south of Seattle. The airport serves around 45 million passengers each year. SEA is a modern airport with award winning food and shopping.

Arriving at Boston Logan International Airport

Boston's Logan International Airport (BOS) is the largest airport in Massachusetts and in the New England area, as well. This busy airport is a hub for the following airlines:

BOS is a busy airport that serves 36 million passengers each year. It has plentiful shopping, lounges, and free WiFi. The airport is home to two five-star James Beard award winning restaurants as well.

Cheapest Tickets to Seattle to Boston Logan International Airport

These are the lowest prices available found using Skyscanner.

What is There to Do in Boston?

Boston was founded in 1630. That makes it one of the oldest cities in America. There are so many sights to see it is difficult, but we have narrowed it down to these three "must-do" activities to plan for your upcoming trip to Boston.

  • Hike the Freedom Trail. This 2.5-mile walking tour tells the story of this nation's founding.
  • Visit the New England Aquarium. With over 2000 aquatic and marine animals, the New England Aquarium is one of the largest. The multi-leveled structure offers something for everyone.
  • Take in a Red Sox Game at Fenway. Fenway Park is one of the oldest ball fields in the nation. The historic venue is home to the venerable Red Sox and many other events throughout the year. If you happen to visit in the off-season, tours of the park are still given daily.

Reserve Your Hotel and Rental Car in Boston

There's no short supply of hotels in and around the city, but if you want to find the most affordable accommodations, Skyscanner has you covered with the best hotel deals in Boston. Don't forget their handy reservation tool for finding the cheapest


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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.