฿3,370 Cheap Flights from Seattle (SEA) to Baltimore (BWI)

View ฿3,370 flight on Wed, 8 Apr 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Baltimore Washington International Airport (BWI)

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Cheap Flights from Seattle (SEA) to Baltimore (BWI)

Prices were available within the past 7 days and start at ฿3,370 for one-way flights and ฿6,735 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿6,735 Return, found 1 day ago
฿6,735
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿6,735 found 1 day ago
Delta
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿7,905 Return, found 1 day ago
฿7,905
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿7,905 found 1 day ago
American Airlines
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿8,365 Return, found 1 day ago
฿8,365
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿8,365 found 1 day ago
Delta
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿9,075 Return, found 1 day ago
฿9,075
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿9,075 found 1 day ago
Delta
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿9,170 Return, found 1 day ago
฿9,170
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿9,170 found 1 day ago
American Airlines
Thu, 25 Sep - Wed, 1 Oct
SEA
Seattle
BWI
Baltimore
฿9,565 Return, found 8 hours ago
฿9,565
Return
found 8 hours ago
Select American Airlines flight, departing Thu, 25 Sep from Seattle to Baltimore, returning Wed, 1 Oct, priced at ฿9,565 found 8 hours ago
United
Thu, 25 Sep - Wed, 1 Oct
SEA
Seattle
BWI
Baltimore
฿9,855 Return, found 8 hours ago
฿9,855
Return
found 8 hours ago
Select United flight, departing Thu, 25 Sep from Seattle to Baltimore, returning Wed, 1 Oct, priced at ฿9,855 found 8 hours ago
American Airlines
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿9,985 Return, found 1 day ago
฿9,985
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿9,985 found 1 day ago
American Airlines
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿9,990 Return, found 1 day ago
฿9,990
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿9,990 found 1 day ago
American Airlines
Thu, 4 Dec - Wed, 10 Dec
SEA
Seattle
BWI
Baltimore
฿10,155 Return, found 1 day ago
฿10,155
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to Baltimore, returning Wed, 10 Dec, priced at ฿10,155 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Baltimore (BWI)

September is typically the cheapest month to fly

From ฿4,731 - ฿7,850 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Baltimore route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
American Airlines, Delta, United
Return price
฿6,735
Distance
3725 km
Average flight time
8 hours 35 mins

Perfect flights from Seattle to Baltimore

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Baltimore. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Baltimore, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Baltimore Washington Intl. Thurgood Marshall ticket options cater to your travel preferences, with incredible one-way fares from ฿3,370 and roundtrip prices from ฿6,735. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Baltimore Washington Intl. Thurgood Marshall and explore Baltimore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your SEA to BWI travel arrangements today and embark on the journey of a lifetime in Baltimore.

Frequently asked questions

How much is a flight from SEA to BWI?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey between Sea-Tac Airport and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) was ฿6,735. Cheap fares don't hang around forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to BWI?
When it comes to cancellation fees, each airline has its own terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to BWI Marshall that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Seattle - Tacoma Intl. Airport (SEA) to BWI Marshall flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The flight distance between Sea-Tac Airport and BWI is 3,800 kilometres. Listen to your favourite tunes or read a good book and the journey will zip on by.
Which airlines fly direct from SEA to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Alaska Airlines (AS) will fly you from Sea-Tac Airport to BWI safely and comfortably. Choose from 30 flights every month along this route.
Are Seattle - Tacoma Intl. Airport (SEA) to BWI Marshall flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Seattle - Tacoma Intl. Airport (SEA) to BWI Marshall last minute could save you some cash. However, it could end up costing you a whole lot more! If you'd prefer not to take the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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Baltimore Airports

Washington

Seattle to Ronald Reagan Washington National
฿10,645.00
*Available to Expedia members.