BWI to SEA Flights: Find the Best Deals to the Pacific Northwest
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Last updated Feb 16, 2026
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Tracking the May 7, 2026 departure — the cheapest date we found.
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Baltimore (BWI)
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Seattle (SEA)
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Search FlightsTraveling from the historic charm of the Mid-Atlantic to the lush, tech-driven landscapes of the Pacific Northwest has never been easier than with a direct flight from Baltimore/Washington International Thurgood Marshall Airport to Seattle-Tacoma International Airport. This cross-country journey covers approximately 2,300 miles, transporting passengers from the Chesapeake Bay region to the shadows of Mount Rainier and the bustling streets of the Emerald City. Whether you are flying for business in the Silicon Forest or a scenic vacation exploring Pike Place Market and the Space Needle, understanding the nuances of this popular transcontinental route ensures a seamless and productive travel experience for all passengers.
Travel Tips
First, prepare for a significant time zone shift of three hours; stay hydrated and try to adjust your sleep schedule a day early to minimize the effects of jet lag upon arrival in Washington State. Second, pack a versatile rain jacket or lightweight layers regardless of the season, as Seattle's weather is famously unpredictable and can transition from misty rain to bright sunshine in a matter of hours. Third, consider booking a window seat on the right side of the aircraft when flying westbound into Seattle to catch potentially stunning views of the Cascade Range and the Olympic Mountains during your final descent. Fourth, download the airlines' mobile apps before departure to track your baggage and receive real-time gate updates, as both BWI and SEA are busy hubs where gate changes can occur frequently during peak travel hours.
Airport Information
Baltimore (BWI)
Baltimore/Washington International Thurgood Marshall Airport (BWI) serves as a major gateway for the Maryland and D.C. metropolitan areas. It is widely recognized for its easy accessibility via the MARC and Amtrak trains, as well as its relatively lower congestion compared to nearby Dulles or Reagan National. Travelers can enjoy a wide variety of local dining options, including authentic Maryland crab cakes, while navigating its efficient five-concourse layout designed for passenger comfort.
Seattle (SEA)
Seattle-Tacoma International Airport (SEA), commonly known as Sea-Tac, is the primary international gateway to the Pacific Northwest and a major hub for both Alaska Airlines and Delta Air Lines. Located about 14 miles south of downtown Seattle, the airport features state-of-the-art facilities, including the recently renovated North Satellite and an impressive Central Terminal with massive floor-to-ceiling windows. Transportation into the city is convenient via the Link Light Rail, which provides a direct and affordable connection to the downtown core.
Seasonal Pricing Patterns
Flight prices from BWI to SEA typically fluctuate based on the Pacific Northwest's peak tourism season, which runs from late June through early September when the weather is most favorable for outdoor activities. Travelers looking for the best bargains should target the shoulder seasons in late spring or late autumn, or the winter months when rain is frequent but fares are significantly lower. Avoiding major holidays and booking at least three to four weeks in advance is highly recommended for securing the most competitive rates on this route.
Frequently Asked Questions
How long is the flight from BWI to SEA?
A non-stop flight typically takes between 5 hours and 45 minutes to 6 hours and 15 minutes, depending on wind speeds and air traffic control.
Which airlines offer direct flights on this route?
Southwest Airlines and Alaska Airlines are the primary carriers offering non-stop service between Baltimore and Seattle, though other major carriers offer one-stop connections.
What is the time difference between Baltimore and Seattle?
Seattle is in the Pacific Time Zone, which is three hours behind Baltimore's Eastern Time Zone, so remember to adjust your watches accordingly.
Is there a train from Sea-Tac to downtown Seattle?
Yes, the Sound Transit Link Light Rail runs frequently from the airport station to various stops in downtown Seattle, taking approximately 40 minutes.
What is the best time to book a flight to Seattle?
For the best prices, it is generally recommended to book at least 21 to 30 days in advance, particularly if you are traveling during the popular summer months.