Cheap Flight Tickets from Boston (BOS) to Seattle (SEA), Starting at $397

Good to Know: Cheapest and Fastest BOS - SEA Flights

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

Cheapest Round Trip Flight

$397

DL Delta Airlines • nonstop • 10h 25m

Oct 17 – Oct 17

The cheapest round trip flight from Boston to Seattle (BOS-SEA-BOS) is currently $397

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Cheapest Direct Flight

$397

DL Delta Airlines • nonstop • 10h 25m

Oct 17

The cheapest nonstop flight from Boston to Seattle (BOS-SEA) is currently $397

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Fastest Flight

10h 22m

The fastest nonstop flight from Boston to Seattle (BOS-SEA) takes 10h 22m

Top Airlines Flying from Boston to Seattle

Delta Airline, DL

Delta Airlines

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

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

Oct 17 - Oct 17, Economy
DL
Boston → Seattle
10h 25m
7:55 AM - 11:20 AM • nonstop
DL
Boston → Seattle
8h 50m
1:40 PM - 10:10 PM • nonstop
$397
Delta Airlines
Oct 17 - Oct 17, Economy
DL
Boston → Seattle
10h 22m
10:50 AM - 2:12 PM • nonstop
DL
Boston → Seattle
8h 45m
11:10 PM - 7:35 AM • nonstop
$402
Delta Airlines
Oct 17 - Oct 17, Economy
DL
Boston → Seattle
15h 57m
5:30 AM - 12:27 PM • 1 stop
DL
Boston → Seattle
8h 45m
11:10 PM - 7:35 AM • nonstop
$456
Delta Airlines
Oct 17 - Oct 17, Economy
DL
Boston → Seattle
18h 55m
6:15 AM - 2:50 PM • 1 stop
DL
Boston → Seattle
8h 45m
11:10 PM - 7:35 AM • nonstop
$456
Delta Airlines
Oct 17 - Oct 17, Economy
DL
Boston → Seattle
17h 9m
6:50 AM - 2:19 PM • 1 stop
DL
Boston → Seattle
8h 45m
11:10 PM - 7:35 AM • nonstop
$456
Delta Airlines
Oct 17 - Oct 17, Economy
DL
Boston → Seattle
19h 17m
11:30 AM - 8:27 PM • 1 stop
DL
Boston → Seattle
18h 27m
10:35 PM - 12:42 PM • 1 stop
$505
Delta Airlines

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

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

FAQs on Boston to Seattle Flights

What are the airports in Boston?
BOS
What’s the most popular airline flying from BOS to SEA?
The most popular airline flying from Boston to Seattle are
Can I fly from BOS to SEA non-stop?
Yes, you can fly BOS to SEA non-stop on
Which airlines fly nonstop between Boston and Seattle?
The non-stop flights between Boston and Seattle are .
What’s the earliest departure time from BOS to SEA Airport?
The earliest flight leaves BOS at 5:30 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Boston to Seattle 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 BOS to SEA?
Read the fare rules of the Boston to Seattle 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 Boston and Seattle?
operate flights between Boston and Seattle
How long does a flight from Boston to Seattle take?
It takes approximately 6 hour to fly non-stop from BOS to SEA, which is 2495.68 miles by air.
Which airlines provide the cheapest flights from Boston (BOS) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from BOS were found on DL : USD 456
Do I need a passport to fly between BOS and SEA?
No
What’s the latest departure time from BOS to SEA ?
The last flight leaves BOS at 11:30 am

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

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

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