Cheap Flight Tickets from Baltimore (BWI) to Seattle (SEA), Starting at $149

Good to Know: Cheapest and Fastest BWI - SEA Flights

Useful information for finding best airline tickets from Baltimore/Washington International Thurgood Marsha to Seattle Tacoma International on your next trip.

Cheapest Round Trip Flight

$251

WN Southwest Airlines • 1 stop • 13h 45m

Sep 20 – Sep 24

The cheapest round trip flight from Baltimore to Seattle (BWI-SEA-BWI) is currently $251

🔍 Search Flights

Cheapest One way Flight

$149

WN Southwest Airlines • 1 stop • 22h 25m

Sep 25

The cheapest one way flight from Baltimore to Seattle (BWI-SEA) is currently $149

🔍 Search Flights

Cheapest Direct Flight

$247

WN Southwest Airlines • nonstop • 9h

Sep 20

The cheapest nonstop flight from Baltimore to Seattle (BWI-SEA) is currently $247

🔍 Search Flights

Fastest Flight

8h 59m

The fastest nonstop flight from Baltimore to Seattle (BWI-SEA) takes 8h 59m

Top Airlines Flying from Baltimore to Seattle

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

Alaska Airlines -AS

Alaska Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Latest Flight Deals from Baltimore (BWI) to Seattle (SEA)

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

Sep 20 - Sep 24, Economy
WN
Baltimore → Seattle
13h 45m
8:15 AM - 1:40 PM • 1 stop
WN
Baltimore → Seattle
8h 20m
10:30 PM - 6:30 AM • nonstop
$251
Southwest Airlines
Sep 20 - Sep 24, Economy
WN
Baltimore → Seattle
22h
1:55 PM - 12:15 AM • 2 stops
WN
Baltimore → Seattle
8h 20m
10:30 PM - 6:30 AM • nonstop
$253
Southwest Airlines
Sep 20 - Sep 24, Economy
DL
Baltimore → Seattle
15h 15m
12:30 PM - 6:45 PM • 1 stop
DL
Baltimore → Seattle
12h 35m
11:59 PM - 10:54 AM • 1 stop
$307
Delta Airlines
Sep 20 - Sep 24, Economy
DL
Baltimore → Seattle
17h 24m
6:00 AM - 1:44 PM • 1 stop
DL
Baltimore → Seattle
12h 35m
11:59 PM - 10:54 AM • 1 stop
$307
Delta Airlines
Sep 20 - Sep 24, Economy
AS
Baltimore → Seattle
30h 37m
4:43 PM - 8:20 AM • 2 stops
AS
Baltimore → Seattle
8h 27m
10:23 PM - 6:30 AM • nonstop
$403
Alaska Airlines
Sep 20 - Sep 24, Economy
AS
Baltimore → Seattle
35h
4:43 PM - 10:43 AM • 2 stops
AS
Baltimore → Seattle
8h 27m
10:23 PM - 6:30 AM • nonstop
$403
Alaska Airlines

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

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

FAQs on Baltimore to Seattle Flights

What are the airports in Baltimore?
IAD,BWI,DCA
What’s the most popular airline flying from BWI to SEA?
The most popular airline flying from Baltimore to Seattle are
Can I fly from BWI to SEA non-stop?
Yes, you can fly BWI to SEA non-stop on
Which airlines fly nonstop between Baltimore and Seattle?
The non-stop flights between Baltimore and Seattle are .
What’s the earliest departure time from BWI to SEA Airport?
The earliest flight leaves BWI at 6:00 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Baltimore 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 BWI to SEA?
Read the fare rules of the Baltimore 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 Baltimore and Seattle?
operate flights between Baltimore and Seattle
How long does a flight from Baltimore to Seattle take?
It takes approximately 5 hour to fly non-stop from BWI to SEA, which is 2334.76 miles by air.
Which airlines provide the cheapest flights from Baltimore (BWI) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from BWI were found on AS : USD 1001
Do I need a passport to fly between BWI and SEA?
No
What’s the latest departure time from BWI to SEA ?
The last flight leaves BWI at 7:15 pm

Baltimore (BWI) to Seattle (SEA): Airport Information

Origin Airport Baltimore/Washington International Thurgood Marsha, Baltimore, US
Destination Airport Seattle Tacoma International , Seattle, US
Distance 2335 miles

More Flight Options for Baltimore (BWI) and Seattle (SEA)

Why Fareleaders for BWI to SEA Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Baltimore to Seattle flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on BWI to SEA flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Baltimore to Seattle 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 Baltimore (BWI) to Seattle (SEA)
Terms and Conditions*