$71 Cheap Flights from Seattle–Tacoma International to Washington, D.C.
One-way
Departing from
Seattle–Tacoma International
Going to
Washington, D.C., United States
Washington, D.C. (BWI)
United States • April, 2026
82% AI deal score
$263 $71
Washington, D.C. (BWI)
United States • August, 2026
80% AI deal score
$530 $215
Washington, D.C. (BWI)
United States • June, 2026
79% AI deal score
$530 $216
Top Cheap Flight Deals from Seattle–Tacoma International to Washington, D.C.
Recent round-trip flight deals to Washington, D.C.
Mon, Apr 27 - Thu, Apr 30
Cheapest
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$263
$143
-$120
46%
Mon, May 4 - Wed, May 6
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$263
$144
-$119
45%
Wed, Jun 3 - Tue, Jun 9
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$265
$144
-$121
46%
Tue, May 19 - Tue, May 26
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$263
$144
-$119
45%
Sat, May 30 - Sat, Jun 6
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$263
$144
-$119
45%
Fri, May 1 - Wed, May 6
Seattle (SEA) - Washington, D.C. (BWI)
Alaska Airlines, Inc. airlines • Direct
Washington, D.C. (BWI) - Seattle (SEA)
Alaska Airlines, Inc. airlines • Direct
$263
$144
-$119
45%
The cheapest time to fly to Washington, D.C.
Ready to jet to Washington, D.C. on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from Seattle–Tacoma International to Washington, D.C.
Need to get to Washington, D.C. ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals!
We found flights to Washington, D.C. for only $479, departing in the next two weeks.
⌛ Last-Minute
Seattle - WAS
A great last-minute steal for a cross-country flight.
Found today
$479
round-trip
Facts About Flights from Seattle–Tacoma International to Washington, D.C.
To help you plan your journey, here are some quick Washington, D.C. flight facts and tips.
Washington, D.C. city airports
Washington, D.C., is served by three major public airports, each offering unique advantages for travelers. Washington Dulles International Airport (IAD), located in Virginia, is the largest and handles a significant volume of international flights, making it a hub for global travel. Baltimore–Washington International Thurgood Marshall Airport (BWI), situated in Maryland, is known for its efficiency and often offers more budget-friendly domestic flights. Ronald Reagan Washington National Airport (DCA), the closest to downtown D.C., provides unparalleled convenience for domestic travelers but has some restrictions on flight distances. All three airports provide a range of transportation options to and from the city, including trains, buses, and ride-sharing services, ensuring accessibility for all passengers.
Washington Dulles International (IAD)
Washington, D.C., United States
Baltimore–Washington International (BWI)
Washington, D.C., United States
Ronald Reagan Washington National (DCA)
Washington, D.C., United States
Pro tip: search “Washington, D.C. (Any)” to see fares to all Washington, D.C. airports – sometimes one is cheaper than the others on your dates.
Insights for flights to Washington, D.C.
Cheapest airport
Baltimore/Washington International Thurgood Marshall Airport (BWI)
BWI is often the most budget-friendly option for flying into the D.C. area. It's known for its efficiency, a wide range of domestic and international flights, and it's a major hub for Southwest Airlines. Plus, you can grab some tasty crab cakes while you're there!
Nonstop vs. 1-stop
50+ cities
Washington, D.C., is a bustling hub offering a plethora of routes, including popular connections to major cities like New York, Chicago, and Atlanta, making it easy to explore the US!
BWI Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
BWI airport insights
Best days to catch a deal
Fri, Wed
Based on the data, Thursday and Saturday are the days when the cheapest deals are most frequently found for flights from Baltimore–Washington International Airport. You're most likely to find a deal on these days compared to the rest of the week.
Avg. deal survival time
15.2 hours
Deals from Baltimore–Washington International airport survive for about 15.2 hours on average. This means you should book quickly when you see a good price!
Rare deal frequency
17 deals
We found 17 rare deals for flights departing from Baltimore–Washington International Airport in the past month. These rare deals, which received an AI Deal Score of 90+, are typically mistake fares, special promotions, or ultra-discounts.
Average price drop
-62%
The average price drop for flights to Baltimore–Washington International Airport is 62.4%, indicating a significant potential for savings. Travelers can potentially find substantial discounts on flights to this airport by monitoring price fluctuations.
Next 4 weeks: deal forecast
Baltimore-Washington International Airport - Next Month's Forecast
Based on current data, flights from Baltimore-Washington International Airport are expected to see a slight increase in price next month. Demand is anticipated to rise, so booking flights sooner rather than later is advisable.
Top 5 biggest price drops (last 3 months)
Found on March 27
Mexico City - BWI
$1,115 → $180
84%
Found on March 29
Winnipeg - BWI
$660 → $157
76%
Found on March 28
Tokyo - BWI
$1,450 → $369
75%
Found on March 28
Monterrey - BWI
$740 → $186
75%
Found on March 27
Nevis - BWI
$1,350 → $387
71%
Check these nearby airports too
Looking for more options? These airports near BWI sometimes drop rare deals too:
Ronald Reagan Washington National (DCA)
~3 rare deals/month
Washington Dulles International (IAD)
~8 rare deals/month
Philadelphia International (PHL)
~7 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially DCA and IAD for long-haul deal surprises.
When Is the Best Time to Fly from Seattle–Tacoma International to Washington, D.C.
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to Washington, D.C.:
Cheapest month
January
Cheapest month
Looking for the absolute cheapest time to visit Washington, D.C.? January is your month! You'll find fewer tourists, lower flight prices, and a serene, quieter atmosphere. Bundle up, because while the deals are hot, the weather is definitely not, but think of all the museums you can explore without the crowds!
Best day to book
Tuesday
Best day to book
Tuesday is your golden ticket to potentially snagging a cheaper flight to Washington, D.C. Airlines often release deals early in the week, making Tuesdays prime time for bargain hunters. Keep an eye out and you might just save enough for a fancy dinner in Georgetown!
Cheapest days to fly
Wednesday
Cheapest days to fly
To save some serious dough, consider flying on a Wednesday. Mid-week flights tend to be less popular with business travelers, which translates to lower prices for you. Plus, you'll already be in D.C. and ready to explore before the weekend crowds arrive!
Advance booking sweet spot
2 months
Advance booking sweet spot
The sweet spot for booking your flight to Washington, D.C. is around 2 months in advance. This timeframe typically offers a balance between availability and price, giving you a better chance of securing a great deal. So, start planning those D.C. adventures about 2 months out and watch those fares!
Washington, D.C. Airports & Ground Transportation
One big question for travelers is which Washington, D.C. airport to fly into. Here’s a quick guide to Washington, D.C.’s airports and how to get to the city from each:
Washington Dulles International Airport (IAD)
Washington Dulles International Airport, or IAD, is a major airport serving the Washington, D.C. metropolitan area. Located about 26 miles (41 km) west of downtown D.C., in Virginia, Dulles offers a wide range of domestic and international flights. The airport boasts a variety of amenities, including restaurants, shops, and lounges, ensuring a comfortable travel experience. Its iconic main terminal, designed by Eero Saarinen, is an architectural marvel. Getting to downtown D.C. is easy with options like the Washington Flyer Silver Line Express bus or the Silver Line Metrorail.
Tip: Consider using the Silver Line Metrorail to avoid traffic when traveling to and from the city.
Ronald Reagan Washington National Airport (DCA)
Ronald Reagan Washington National Airport, or DCA, is the closest airport to Washington, D.C., situated just across the Potomac River in Arlington, Virginia. This convenient location makes it a popular choice for travelers visiting the capital. DCA offers primarily domestic flights and a selection of amenities including shops and restaurants. The airport provides stunning views of the D.C. monuments and skyline during takeoff and landing. Transportation to and from the city is a breeze, with the Yellow and Blue Line Metrorail stations directly connected to the terminal.
What to Do in Washington, D.C.
Washington, D.C. isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in Washington, D.C., organized by interest:
Sightseeing & landmarks
Get ready to be star-struck by the iconic landmarks of Washington, D.C.! From the majestic U.S. Capitol Building to the solemn Lincoln Memorial, you'll be walking through history. Don't forget to snap a selfie with the Washington Monument!
Arts & culture
Prepare to immerse yourself in a world of art and culture in D.C. Explore world-class museums like the Smithsonian National Museum of Natural History and the National Gallery of Art. Catch a show at the historic Ford's Theatre for a memorable experience.
Food & nightlife
Get your taste buds ready for a culinary adventure in D.C.! Indulge in diverse cuisines, from trendy food trucks to upscale restaurants. As the sun sets, explore vibrant nightlife scenes with cozy bars and live music venues.
Shopping & fashion
Shop 'til you drop in the fashion-forward streets of D.C.! Discover unique boutiques in Georgetown or explore high-end retailers in CityCenterDC. Don't forget to pick up some souvenirs to remember your trip!
Nearby getaways
Escape the city buzz with exciting getaways near D.C.! Explore the charming historic town of Annapolis, Maryland, or hike scenic trails in Shenandoah National Park. A short trip can offer a refreshing change of scenery!
No matter your interest – be it art, food, nightlife, or nature – Washington, D.C. has something for everyone. And the best part? Many events and attractions refresh throughout the year, so there’s always something new to experience each visit.
Events in Washington, D.C. This Month
city of the sun
City of the Sun, a powerhouse trio from NYC, offers an experiential musical experience that redefines instrumental music and appeals to a new generation of listeners. Their unique sound is captivating and innovative.
washington d.c. small business expo 2026
Small Business Expo DC is a dynamic event that fosters innovation and success. It provides attendees with valuable opportunities through free workshops, engaging panel discussions, and efficient speed networking sessions.
fridayy
Experience an unforgettable night with Grammy-nominated artist Fridayy live at Throw Social DC on Saturday, April 4th, from 10 PM to 4 AM. Immerse yourself in the music, energy, and electrifying atmosphere as Fridayy takes the stage.
reading the city: the land trap — solid state books
In 'The Land Trap,' Mike Bird, Wall Street editor at The Economist, unveils the hidden influence of land, the world's oldest asset, on our modern economy, revealing its surprising and enduring impact.
Washington, D.C. Weather
Weather in Washington, D.C.
Tue, Mar 31
10%
27° 15°
10%
Wed, Apr 1
Frequently Asked Questions About Flights to Washington, D.C.
Pro Tips for Finding Cheap Flights to Washington, D.C.
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on Washington, D.C. flights:
Fly Off-Peak for Peak Savings: Avoid the tourist tidal waves by flying during the shoulder seasons (spring and fall) or on weekdays. You'll often find flights are cheaper when demand dips!
Be a Flight Deal Detective: Scour flight comparison websites and be flexible with your dates. Sometimes shifting your travel by a day or two can unearth significant savings – think of it as a treasure hunt!
