Cheap Flight Tickets from Seattle (SEA) to Boston (BOS), Starting at $507

Good to Know: Cheapest and Fastest SEA - BOS Flights

Useful information for finding best airline tickets from Seattle Tacoma International to Logan International on your next trip.

Cheapest Round Trip Flight

$582

DL Delta Airlines • nonstop • 8h 48m

Aug 02 – Aug 09

The cheapest round trip flight from Seattle to Boston (SEA-BOS-SEA) is currently $582

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Cheapest Direct Flight

$507

DL Delta Airlines • nonstop • 8h 48m

Aug 02

The cheapest nonstop flight from Seattle to Boston (SEA-BOS) is currently $507

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Fastest Flight

8h 34m

The fastest nonstop flight from Seattle to Boston (SEA-BOS) takes 8h 34m

Top Airlines Flying from Seattle to Boston

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

Sun Country Airlines (SY)

Sun Country Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Seattle (SEA) to Boston (BOS)

Compare and book low fare round-trip air tickets from Seattle to Boston. Ideal for travelers with confirmed return itineraries.

Aug 02 - Aug 09, Economy
DL
Seattle → Boston
8h 48m
11:15 AM - 7:43 PM • nonstop
DL
Seattle → Boston
13h 29m
5:51 AM - 11:00 AM • 1 stop
$582
Delta Airlines
Aug 02 - Aug 09, Economy
DL
Seattle → Boston
11h 46m
9:05 AM - 7:11 PM • 1 stop
DL
Seattle → Boston
10h 36m
7:35 PM - 11:11 PM • nonstop
$582
Delta Airlines
Aug 02 - Aug 09, Economy
DL
Seattle → Boston
8h 34m
4:00 PM - 12:14 AM • nonstop
DL
Seattle → Boston
13h 56m
6:18 PM - 11:54 PM • 1 stop
$582
Delta Airlines
Aug 02 - Aug 09, Economy
DL
Seattle → Boston
8h 51m
7:29 AM - 4:00 PM • nonstop
DL
Seattle → Boston
13h 56m
6:18 PM - 11:54 PM • 1 stop
$582
Delta Airlines
Aug 02 - Aug 09, Economy
WN
Seattle → Boston
11h 55m
5:15 AM - 3:30 PM • 1 stop
WN
Seattle → Boston
17h 25m
5:30 AM - 1:15 PM • 1 stop
$4140
Southwest Airlines
Aug 02 - Aug 09, Economy
WN
Seattle → Boston
14h 10m
11:05 PM - 10:55 AM • 1 stop
WN
Seattle → Boston
13h 55m
5:35 PM - 11:10 PM • 1 stop
$4140
Southwest Airlines

Fly from Seattle to Boston with the Best Airfare Deals on FareLeaders

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

FAQs on Seattle to Boston Flights

What are the airports in Seattle?
SEA
What’s the most popular airline flying from SEA to BOS?
The most popular airline flying from Seattle to Boston are
Can I fly from SEA to BOS non-stop?
Yes, you can fly SEA to BOS non-stop on
Which airlines fly nonstop between Seattle and Boston?
The non-stop flights between Seattle and Boston are .
What’s the earliest departure time from SEA to BOS Airport?
The earliest flight leaves SEA at 5:15 am and lands in BOS - Logan International
What are the airports in Boston?
BOS
Can I make changes to my Seattle to Boston flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from SEA to BOS?
Read the fare rules of the Seattle to Boston air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Seattle and Boston?
operate flights between Seattle and Boston
How long does a flight from Seattle to Boston take?
It takes approximately 6 hour to fly non-stop from SEA to BOS, which is 2495.68 miles by air.
Which airlines provide the cheapest flights from Seattle (SEA) to Boston (BOS) ?
In the past couple of days, the cheapest tickets to BOS from SEA were found on DL : USD 582
Do I need a passport to fly between SEA and BOS?
No
What’s the latest departure time from SEA to BOS ?
The last flight leaves SEA at 11:15 pm

Essential Information for Booking Flights from Seattle (SEA) - AI Insights

What's the cheapest airline from sea to bos?
You can find the cheapest airline from Seattle to Boston on Alaska Airlines. For a one-way trip with 1 passenger in Economy class, it's recommended to book at least 7 days in advance to get budget-friendly airfares. You can search for cheap flights on our website and compare prices across airlines.
What's the popular airline to fly from sea to bos?
Southwest Airlines is a popular airline option for flights from Seattle to Boston. As you're booking a one-way trip with only one stop, Southwest Airlines is likely your best choice. You can find affordable airfares on their website.
What's the cheapest day of the week to fly from sea to bos?
The cheapest day to fly from Seattle (SEA) to Boston (BOS) is Sunday. Flying on Sundays can result in lower fares compared to other days of the week. Booking your flight at least 7 days in advance can also help you secure a budget-friendly airfare.
What's the cheapest month to fly from sea to bos?
The cheapest month to fly from Seattle (SEA) to Boston (BOS) is June. Flying during this time can help you secure budget-friendly flights. Consider booking your flight in advance, ideally 7 days prior to your travel date, to take advantage of the best airfare options.
Which airline/airlines fly from sea to bos?
You can fly from Seattle Tacoma International Airport (SEA) to Logan International Airport (BOS) on airlines such as United Airlines, Aeromexico, Sun Country Airlines, Alaska Airlines, WestJet Airlines, and JetBlue Airways. You can find cheap airfares and book your flights in advance for optimal savings.
What is the cheapest airline to fly from Seattle Tacoma International Airport to Logan International Airport?
Alaska Airlines offers affordable flights from Seattle Tacoma International Airport to Logan International Airport.
How far in advance can I book an airfare for my trip?
It is recommended to book your airfare at least 7 days in advance to get the cheapest fares.
Can I find flights with affordable fares on fareleaders.com?
Yes, fareleaders.com offers a wide range of affordable flight options from various airlines.
How do I save money on airfares when booking a flight?
You can save money on airfares by being flexible with your travel dates and using fareleaders.com to compare prices.
What are some popular airlines that operate flights from Seattle to Boston?
Southwest Airlines and Alaska Airlines are two of the most popular airlines operating flights from Seattle to Boston.

Seattle (SEA) to Boston (BOS): Airport Information

Origin Airport Seattle Tacoma International , Seattle, US
Destination Airport Logan International, Boston, US
Distance 2496 miles

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