Cheap Flight Tickets from Seattle (SEA) to Boston (BOS), Starting at $498

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

$498

WN Southwest Airlines • 1 stop • 18h 30m

Sep 28 – Oct 12

The cheapest round trip flight from Seattle to Boston (SEA-BOS-SEA) is currently $498

🔍 Search Flights

Cheapest Direct Flight

$527

AS Alaska Airlines • nonstop • 8h 45m

Sep 28

The cheapest nonstop flight from Seattle to Boston (SEA-BOS) is currently $527

🔍 Search Flights

Fastest Flight

8h 44m

The fastest nonstop flight from Seattle to Boston (SEA-BOS) takes 8h 44m

Top Airlines Flying from Seattle to Boston

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

United Airlines, UA

United Airlines

Sun Country Airlines (SY)

Sun Country 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.

Sep 28 - Oct 12, Economy
WN
Seattle → Boston
18h 30m
10:30 PM - 12:40 PM • 1 stop
WN
Seattle → Boston
35h 50m
5:50 AM - 12:40 AM • 1 stop
$498
Southwest Airlines
Sep 28 - Oct 12, Economy
DL
Seattle → Boston
8h 52m
11:08 PM - 7:40 AM • nonstop
DL
Seattle → Boston
10h 25m
7:55 AM - 11:20 AM • nonstop
$552
Delta Airlines
Sep 28 - Oct 12, Economy
WN
Seattle → Boston
23h 50m
10:30 PM - 4:00 PM • 1 stop
WN
Seattle → Boston
24h 5m
12:55 PM - 12:40 AM • 2 stops
$637
Southwest Airlines
Sep 28 - Oct 12, Economy
WN
Seattle → Boston
28h 25m
10:30 PM - 6:35 PM • 1 stop
WN
Seattle → Boston
29h 5m
10:00 PM - 12:45 PM • 1 stop
$637
Southwest Airlines
Sep 28 - Oct 12, Economy
WN
Seattle → Boston
33h 35m
11:00 PM - 10:15 PM • 1 stop
WN
Seattle → Boston
29h 5m
10:00 PM - 12:45 PM • 1 stop
$671
Southwest Airlines
Sep 28 - Oct 12, Economy
DL
Seattle → Boston
12h 34m
11:59 PM - 10:53 AM • 1 stop
DL
Seattle → Boston
10h 25m
7:55 AM - 11:20 AM • nonstop
$687
Delta 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 7:16 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 552
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 11:59 pm

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

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

More Flight Options for Seattle (SEA) and Boston (BOS)

Why Fareleaders for SEA to BOS Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Seattle to Boston flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on SEA to BOS flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Seattle to Boston flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Seattle (SEA) to Boston (BOS)
Terms and Conditions*