
Popular airlines from Seattle-Tacoma International Airport (SEA) to Washington Dulles Intl. Airport (IAD)
- American Airlines
American Airlines
- Delta
Delta
- United
United
- Plan, book, fly with confidence
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Cheap Flights from Seattle to Washington (SEA-IAD)
Prices were available within the past 7 days and start at S$190 for one-way flights and S$354 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, 20 Aug - Sat, 23 Aug
SEA
Seattle
IAD
Washington
S$354 Return, found 2 days ago
S$354
Return
found 2 days ago

Tue, 19 Aug - Tue, 26 Aug
SEA
Seattle
IAD
Washington
S$355 Return, found 10 hours ago
S$355
Return
found 10 hours ago

Thu, 28 Aug - Fri, 5 Sep
SEA
Seattle
IAD
Washington
S$405 Return, found 1 day ago
S$405
Return
found 1 day ago

Sat, 16 Aug - Tue, 19 Aug
SEA
Seattle
IAD
Washington
S$456 Return, found 4 days ago
S$456
Return
found 4 days ago

Tue, 19 Aug - Tue, 26 Aug
SEA
Seattle
IAD
Washington
S$456 Return, found 10 hours ago
S$456
Return
found 10 hours ago

Tue, 19 Aug - Tue, 26 Aug
SEA
Seattle
IAD
Washington
S$457 Return, found 10 hours ago
S$457
Return
found 10 hours ago

Wed, 20 Aug - Sat, 23 Aug
SEA
Seattle
IAD
Washington
S$469 Return, found 2 days ago
S$469
Return
found 2 days ago

Tue, 19 Aug - Tue, 26 Aug
SEA
Seattle
IAD
Washington
S$470 Return, found 10 hours ago
S$470
Return
found 10 hours ago

Wed, 20 Aug - Sat, 23 Aug
SEA
Seattle
IAD
Washington
S$481 Return, found 2 days ago
S$481
Return
found 2 days ago

Wed, 20 Aug - Sat, 23 Aug
SEA
Seattle
IAD
Washington
S$532 Return, found 2 days ago
S$532
Return
found 2 days ago
Find the cheapest month to fly from Seattle (SEA) to Washington (IAD)
August is typically the cheapest month to fly
From S$289 - S$485 per traveller.
Graph displaying average flight prices per month
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Washington Dulles Intl. |
Airlines serving | American Airlines, Delta, United |
Return price | S$353 |
Distance | 3679 km |
Average flight time | 8 hours 39 mins |
Perfect flights from Seattle to Washington
Your Journey from Seattle to Washington
Start your unforgettable journey with Expedia. Our broad selection of flights from Seattle to Washington 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, Alaska Airlines. Our selection of flights from Seattle - Tacoma Intl. to Washington Dulles 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 Seattle to Washington Flights
Experience the joy of finding cheap flights from Seattle - Tacoma Intl. to Washington Dulles Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$190 and roundtrip prices from S$354*.
Pre-Flight Essentials
Ensure a smooth journey from Seattle to Washington 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 Washington
Picture yourself stepping off the plane in Washington and immersing yourself in the unique atmosphere of Chantilly. 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 Seattle to Washington 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 Seattle to Washington.
Beyond the Flight – Exploring Washington
With Expedia, your adventure extends beyond the flight. Explore Washington 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 Seattle to Washington 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 Seattle to Washington with confidence. Book your travel arrangements with Expedia today.
*Note: Prices may vary based on availability and are subject to change.
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Popular flights from Seattle
- Seattle to Newark Liberty Intl. Airport (SEA - EWR)
- Seattle to Calgary (SEA - YYC)
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Popular flights to Washington
- Mumbai to Washington (BOM - IAD)
- Newark Liberty Intl. Airport to Washington (EWR - IAD)
- Bangkok to Washington (BKK - IAD)
- Kuala Lumpur to Washington (KUL - IAD)
- Amsterdam to Washington (AMS - IAD)
- Boston to Washington (BOS - IAD)
- New York to Washington (LGA - IAD)
- Dubai to Washington (DXB - IAD)
- Seoul to Washington (ICN - IAD)
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- Singapore to Washington (SIN - IAD)
Popular flights from Seattle
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