Cheap Flight Tickets from Boston (BOS) to Seattle (SEA), Starting at $317

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

$367

WN Southwest Airlines • 2 stops • 25h 10m

Sep 05 – Sep 12

The cheapest round trip flight from Boston to Seattle (BOS-SEA-BOS) is currently $367

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Cheapest Direct Flight

$317

DL Delta Airlines • nonstop • 10h 35m

Sep 05

The cheapest nonstop flight from Boston to Seattle (BOS-SEA) is currently $317

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Fastest Flight

10h 12m

The fastest nonstop flight from Boston to Seattle (BOS-SEA) takes 10h 12m

Top Airlines Flying from Boston to Seattle

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Sun Country Airlines (SY)

Sun Country 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.

Sep 05 - Sep 12, Economy
WN
Boston → Seattle
25h 10m
10:45 AM - 10:55 PM • 2 stops
WN
Boston → Seattle
25h 15m
5:00 AM - 11:15 PM • 2 stops
$367
Southwest Airlines
Sep 05 - Sep 12, Economy
WN
Boston → Seattle
30h 40m
5:50 AM - 9:30 PM • 2 stops
WN
Boston → Seattle
20h 5m
9:20 AM - 12:25 AM • 1 stop
$387
Southwest Airlines
Sep 05 - Sep 12, Economy
WN
Boston → Seattle
22h 25m
10:45 AM - 9:30 PM • 2 stops
WN
Boston → Seattle
20h 5m
9:20 AM - 12:25 AM • 1 stop
$387
Southwest Airlines
Sep 05 - Sep 12, Economy
WN
Boston → Seattle
13h 40m
5:40 AM - 11:00 AM • 1 stop
WN
Boston → Seattle
11h 50m
9:40 AM - 7:50 PM • 1 stop
$413
Southwest Airlines
Sep 05 - Sep 12, Economy
DL
Boston → Seattle
10h 35m
6:45 PM - 10:20 PM • nonstop
DL
Boston → Seattle
12h 34m
11:59 PM - 10:53 AM • 1 stop
$427
Delta Airlines
Sep 05 - Sep 12, Economy
DL
Boston → Seattle
12h 29m
11:57 AM - 4:46 PM • 1 stop
DL
Boston → Seattle
8h 52m
11:08 PM - 7:40 AM • nonstop
$427
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 5:35 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 427
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 7:35 pm

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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