RM549 Cheap Flights from Baltimore (BWI) to Seattle (SEA)

View RM549 flight on Mon, 15 Dec 2025Opens in a new window

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

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Cheap Flights from Baltimore to Seattle (BWI-SEA)

Prices were available within the past 7 days and start at RM549 for one-way flights and RM1,498 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,498 Return, found 1 day ago
RM1,498
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,498 found 1 day ago
Delta
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,544 Return, found 1 day ago
RM1,544
Return
found 1 day ago
Select Delta flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,544 found 1 day ago
United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,558 Return, found 1 day ago
RM1,558
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,558 found 1 day ago
American Airlines
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,600 Return, found 1 day ago
RM1,600
Return
found 1 day ago
Select American Airlines flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,600 found 1 day ago
United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,629 Return, found 1 day ago
RM1,629
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,629 found 1 day ago
United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,689 Return, found 1 day ago
RM1,689
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,689 found 1 day ago
Delta
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,714 Return, found 1 day ago
RM1,714
Return
found 1 day ago
Select Delta flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,714 found 1 day ago
United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,732 Return, found 1 day ago
RM1,732
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,732 found 1 day ago
United
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,736 Return, found 1 day ago
RM1,736
Return
found 1 day ago
Select United flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,736 found 1 day ago
Delta
Sat, 23 Aug - Sat, 30 Aug
BWI
Baltimore
SEA
Seattle
RM1,778 Return, found 1 day ago
RM1,778
Return
found 1 day ago
Select Delta flight, departing Sat, 23 Aug from Baltimore to Seattle, returning Sat, 30 Aug, priced at RM1,778 found 1 day ago

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

September is typically the cheapest month to fly

From RM 635 - RM 995 per traveller.

Graph displaying average flight prices per month

Baltimore to Seattle route information
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Return price
RM1,498
Distance
3725 km
Average flight time
3 hours 6 mins

Perfect flights from Baltimore to Seattle

Your Journey from Baltimore to Seattle

Start your unforgettable journey with Expedia. Our broad selection of flights from Baltimore to Seattle caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, United, American Airlines. Our selection of flights from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Baltimore to Seattle Flights

Experience the joy of finding cheap flights from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM549 and roundtrip prices from RM1,498*.
 

Pre-Flight Essentials

Ensure a smooth journey from Baltimore to Seattle with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Seattle

Picture yourself stepping off the plane in Seattle and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Baltimore to Seattle Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Baltimore to Seattle.
 

Beyond the Flight – Exploring Seattle

With Expedia, your adventure extends beyond the flight. Explore Seattle at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Baltimore to Seattle with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Baltimore to Seattle with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from BWI Airport to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from BWI to Sea-Tac Airport was RM1,498. Fares this good don't stick around for long, so make sure you 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 BWI Marshall to Sea-Tac Airport?
The majority of flights can be conveniently cancelled online, but whether or not you are charged a fee varies between airlines. If you do need to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from BWI Airport to SEA 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 BWI Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BWI Airport to Seattle - Tacoma Intl. Airport (SEA)?
The flight distance between BWI Marshall and Sea-Tac Airport is 3,800 kilometres. Pack yourself a drink, some snacks and a few good podcasts. Keep yourself entertained and the hours will fly by.
Which airlines fly direct from BWI Marshall to SEA?
Flying straight from BWI Airport to Sea-Tac Airport is a cinch with Alaska Airlines (AS). This top airline operates 30 flights every month.
Are BWI Marshall to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from BWI to Seattle - Tacoma Intl. Airport (SEA) at the last minute could be your ticket to an awesome deal. However, it might cost you a whole lot more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

*Available to Expedia members.