
Popular airlines from Washington Dulles Intl. Airport (IAD) to Seattle-Tacoma International Airport (SEA)
- Alaska Airlines
Alaska Airlines
- United
United
- Delta
Delta
- American Airlines
American Airlines
- Southwest Airlines
Southwest Airlines
- Sun Country Airlines
Sun Country Airlines
- Hawaiian Airlines
Hawaiian Airlines
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Cheap Flights from Washington to Seattle (IAD-SEA)
Prices were available within the past 7 days and start at S$180 for one-way flights and S$365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, 31 Oct - Sun, 2 Nov
IAD
Washington
SEA
Seattle
S$365 Return, found 5 days ago
S$365
Return
found 5 days ago

Fri, 7 Nov - Sun, 9 Nov
IAD
Washington
SEA
Seattle
S$372 Return, found 5 days ago
S$372
Return
found 5 days ago

Tue, 11 Nov - Thu, 13 Nov
IAD
Washington
SEA
Seattle
S$385 Return, found 5 days ago
S$385
Return
found 5 days ago

Tue, 11 Nov - Thu, 13 Nov
IAD
Washington
SEA
Seattle
S$398 Return, found 5 days ago
S$398
Return
found 5 days ago

Fri, 7 Nov - Sun, 9 Nov
IAD
Washington
SEA
Seattle
S$398 Return, found 5 days ago
S$398
Return
found 5 days ago

Tue, 11 Nov - Thu, 13 Nov
IAD
Washington
SEA
Seattle
S$422 Return, found 5 days ago
S$422
Return
found 5 days ago

Tue, 11 Nov - Thu, 13 Nov
IAD
Washington
SEA
Seattle
S$425 Return, found 5 days ago
S$425
Return
found 5 days ago

Tue, 11 Nov - Thu, 13 Nov
IAD
Washington
SEA
Seattle
S$435 Return, found 5 days ago
S$435
Return
found 5 days ago

Fri, 7 Nov - Sun, 9 Nov
IAD
Washington
SEA
Seattle
S$449 Return, found 5 days ago
S$449
Return
found 5 days ago

Fri, 7 Nov - Sun, 9 Nov
IAD
Washington
SEA
Seattle
S$450 Return, found 5 days ago
S$450
Return
found 5 days ago
Find the cheapest month to fly from Washington (IAD) to Seattle (SEA)
November is typically the cheapest month to fly
From S$258 - S$606 per traveller.
Frequently asked questions
Travel information
Travel information
Origin airport | Washington Dulles Intl. |
Destination airport | Seattle - Tacoma Intl. |
Return price | S$364 |
Distance | 3679 km |
Average flight time | 2 hours 47 mins |
Book with confidence
Book with confidence
Perfect flights from Washington to Seattle
Your Journey from Washington to Seattle
Start your unforgettable journey with Expedia. Our broad selection of flights from Washington 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, Southern Airways Express. Our selection of flights from Washington Dulles Intl. 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 Washington to Seattle Flights
Experience the joy of finding cheap flights from Washington Dulles Intl. 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 S$180 and roundtrip prices from S$365*.
Pre-Flight Essentials
Ensure a smooth journey from Washington 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 Seattle. 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 Washington 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 Washington 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 Washington 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 Washington to Seattle with confidence. Book your travel arrangements with Expedia today.
*Note: Prices may vary based on availability and are subject to change.
Explore a world of travel with Expedia
Explore a world of travel with Expedia
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Popular flights from Washington
- Washington to Bangkok (IAD - BKK)
- Washington to Delhi (IAD - DEL)
- Washington to Manila (IAD - MNL)
- Washington to Barcelona (IAD - BCN)
- Washington to Montreal (IAD - YUL)
- Washington to Tokyo (IAD - NRT)
- Washington to Orlando (IAD - MCO)
- Washington to Singapore (IAD - SIN)
- Washington to Toronto (IAD - YYZ)
Popular flights to Seattle
- Chicago to Seattle (ORD - SEA)
- San Diego to Seattle (SAN - SEA)
- Newark Liberty Intl. Airport to Seattle (EWR - SEA)
- Los Angeles to Seattle (LAX - SEA)
- Taipei to Seattle (TSA - SEA)
- Bangkok to Seattle (BKK - SEA)
- Jakarta to Seattle (CGK - SEA)
- Milwaukee to Seattle (MKE - SEA)
- Taipei to Seattle (TPE - SEA)
- Tokyo to Seattle (NRT - SEA)
- Dallas to Seattle (DFW - SEA)
- Seoul to Seattle (ICN - SEA)
Top Flight Destinations Near Here
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Washington Airports
Baltimore
Washington
Nearby Airports
- Manassas Regional Airport (MNZ)
- Montgomery County Airpark Airport (GAI)
- Ronald Reagan Washington National Airport (DCA)
- Eastern West Virginia Regional Airport (MRB)
- Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
- Charlottesville-Albemarle Airport (CHO)
- Shenandoah Valley Regional Airport (SHD)
- Harrisburg Intl. Airport (MDT)
Expedia's Latest Trends
Flights
- San Francisco to Grand Canyon (SFO - GCN)
- Singapore to Columbus (SIN - CMH)
- Singapore to Philadelphia (SIN - PHL)
- Singapore to Spokane (SIN - GEG)
- New York to Toronto (NYC - YYZ)
- Dallas to Singapore (DFW - SIN)
- Boston to New York (BOS - JFK)
- Anchorage to Vancouver (ANC - YVR)
- Boston to Singapore (BOS - SIN)
- Singapore to Pittsburgh (SIN - PIT)
- Singapore to Boston (SIN - BOS)
- San Francisco to Las Vegas (SFO - LAS)
- Boston to Barcelona (BOS - BCN)
- Singapore to Fort Lauderdale (SIN - FLL)
- Las Vegas to Los Angeles (LAS - LAX)
- Singapore to Cincinnati (SIN - CVG)
- Los Angeles to Boston (LAX - BOS)
- Singapore to Dallas (SIN - DFW)
- Toronto to New York (YYZ - NYC)
- Singapore to St. Louis (SIN - STL)
- Los Angeles to Las Vegas (LAX - LAS)
- Singapore to Charlottesville (SIN - CHO)
- New York to Boston (JFK - BOS)
- Los Angeles to New York (LAX - NYC)
- Las Vegas to San Francisco (LAS - SFO)
- New York to Denver (NYC - DEN)
- Singapore to San Diego (SIN - SAN)
- Singapore to Las Vegas (SIN - LAS)
- Singapore to Cleveland (SIN - CLE)
- New York to Los Angeles (NYC - LAX)
*Available to Expedia members.