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Cheap Flights from Boston Logan International to Seattle / Tacoma International

Compare Boston Logan International to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

Book the best Seattle / Tacoma International fare with no extra fees

Flight deals from Boston Logan International to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Boston Logan International to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.
Seattle.£200 per passenger.Departing Wed, 8 May, returning Tue, 14 May.Return flight with United.Outbound indirect flight with United, departs from Boston Logan International on Wed, 8 May, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 14 May, arriving in Boston Logan International.Price includes taxes and charges.From £200, select.
Seattle.£203 per passenger.Departing Sat, 19 Oct, returning Sat, 2 Nov.Return flight with United.Outbound indirect flight with United, departs from Boston Logan International on Sat, 19 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sat, 2 Nov, arriving in Boston Logan International.Price includes taxes and charges.From £203, select.
Seattle.£203 per passenger.Departing Wed, 21 Aug, returning Mon, 26 Aug.Return flight with United.Outbound indirect flight with United, departs from Boston Logan International on Wed, 21 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 26 Aug, arriving in Boston Logan International.Price includes taxes and charges.From £203, select.
Seattle.£203 per passenger.Departing Wed, 2 Oct, returning Mon, 7 Oct.Return flight with United.Outbound indirect flight with United, departs from Boston Logan International on Wed, 2 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 7 Oct, arriving in Boston Logan International.Price includes taxes and charges.From £203, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to Seattle / Tacoma International flights are currently cheapest in May.
Apr
Find prices
May
from £200
Jun
from £204
Jul
from £349
Aug
from £203
Sep
from £251
Oct
from £203
Nov
from £240
Dec
from £292
Jan
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Feb
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Mar
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Direct flights from Boston Logan International to Seattle / Tacoma International

Boston Logan International to Seattle / Tacoma International: Alternative routes

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

Boston to Seattle: Flight information

The things to know before you go.
Cheapest flight found£200
Cheapest month to flyMay
Average flight time6 hrs, 18 mins
Most popular airlineAlaska Airlines
Average flights per week217

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

The best price we found for a return flight from Boston Logan International to Seattle / Tacoma International is £199. 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.
6 hours and 18 minutes is the average flight time from Boston Logan International to Seattle / Tacoma International.
Alaska Airlines, Delta and Qatar Airways fly direct from Boston Logan International to Seattle / Tacoma International.
As of April 2024, there are 217 flights per week flying from Boston Logan International to Seattle / Tacoma International.
The cheapest month to fly from Boston Logan International to Seattle / Tacoma International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to Seattle / Tacoma International Airport on Wednesday, 8 May 2024.
Yes – the average flight time is 6 hours and 18 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 Seattle / Tacoma 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 Seattle / Tacoma International is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United and Alaska Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

How to find cheap flights to Seattle (SEA) from Boston (BOS) in 2024

Looking for cheap tickets from Boston Logan International to Seattle / Tacoma International? Return tickets start from £200 and one-way flights to Seattle / Tacoma International from Boston Logan International start from £100


Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Boston Logan to Seattle / Tacoma. And with us there are no hidden fees - what you see is what you pay.
  • Compare flight deals to Seattle from Boston from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Seattle start from £100 one-way.
  • Flex your dates to find the best BOS-SEA ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Seattle / Tacoma International from Boston Logan International.
  • Set up a Price Alert. You can easily track the fare of your cheap Boston Logan-Seattle / Tacoma flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Flexible on when you travel? The cheapest month to fly from Boston Logan International to Seattle / Tacoma International is May.
  • Fly without stops. Only interested in direct flights between Boston Logan International and Seattle / Tacoma International? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: KLM
    Alaska Airlines
    Singapore Airlines
    Qatar Airways
    Air Tahiti Nui
    Virgin Atlantic
    Condor
    Korean Air
  • Find the cheapest Business class flights from Boston Logan International and Seattle / Tacoma International. We scour the internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Boston Logan International to Seattle / Tacoma International flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
  • Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Boston Logan International and Seattle / Tacoma International whenever you want.

Combine your flight to Seattle / Tacoma International from Boston Logan International with hotels and car hire

Once you've secured your cheap flight ticket from Boston Logan International to Seattle / Tacoma International, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


Plan the rest of your trip from Boston to Seattle

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