Featured airlines
- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 30% on select hotels after you book a flight*
Cheap flights from Washington (IAD) to Seattle (SEA)
Prices were available within the past 7 days and start at CA $180 for one-way flights and CA $377 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Origin airport | Washington Dulles Intl. |
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Sun Country Airlines |
Roundtrip price | CA $376 |
Distance | 3679 km |
Average flight time | 2 hours 42 mins |
Chantilly to Seattle Flights
The easy way to book your flights from Washington to Seattle
With Expedia, it’s simple to find and book flights to Seattle from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Qatar Airways, KLM, JAL, Austrian, China Eastern Airlines, Delta Air Lines, Copa Airlines, United Airlines, Ethiopian Airlines, Alaska Airlines, Avianca, Air Tahiti Nui, Korean Air, Brussels Airlines, Lufthansa nonstop flights to Seattle - Tacoma Intl., too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Seattle today, tomorrow, or this week.
Save dollars with cheap flights from Washington Dulles Intl., IAD to Seattle - Tacoma Intl., SEA
Sort your search results by price to find great deals on your flight from Washington to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Washington currently is just CA $377 rising to CA $396.
Here are more money-saving tips:
- Fly in July when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to Seattle
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to Seattle from Washington
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.
Frequently asked questions
- Trending Routes
- Trending Flights
- Top Flights Destinations
- Other Airlines
- Main Airports for Flights
- Cheap Flights from Other Airports
- Expedia's Latest Trends
Top Routes from Washington
- Washington to Ottawa (IAD - YOW)
- Washington to Mumbai (IAD - BOM)
- Washington to Calgary (IAD - YYC)
- Washington to Paris (IAD - CDG)
- Washington to Bengaluru (IAD - BLR)
- Washington to Delhi (IAD - DEL)
- Washington to Cairo (IAD - CAI)
- Washington to Victoria (IAD - YYJ)
- Washington to Reykjavik (IAD - KEF)
- Washington to Montreal (IAD - YUL)
- Washington to Hyderabad (IAD - HYD)
- Washington to Vancouver (IAD - YVR)
Top Routes to Seattle
- Ottawa to Seattle (YOW - SEA)
- Calgary to Seattle (YYC - SEA)
- Kelowna to Seattle (YLW - SEA)
- Detroit to Seattle (DTW - SEA)
- Saskatoon to Seattle (YXE - SEA)
- Winnipeg to Seattle (YWG - SEA)
- Halifax to Seattle (YHZ - SEA)
- Delhi to Seattle (DEL - SEA)
- Victoria to Seattle (YYJ - SEA)
- Québec to Seattle (YQB - SEA)
- Montreal to Seattle (YUL - SEA)
- Buffalo to Seattle (BUF - SEA)
Top Routes from Washington
Top Flight Destinations
- Flights to Las Vegas
- Flights to New York
- Flights to Orlando
- Flights to Panama City Beach
- Flights to San Diego
- Flights to Chicago
- Flights to Los Angeles
- Flights to Myrtle Beach
- Flights to Miami
- Flights to Destin
- Flights to Nashville
- Flights to Boston
- Flights to Key West
- Flights to Honolulu
- Flights to San Francisco
- Flights to New Orleans
- Flights to Fort Lauderdale
- Flights to Houston
- Flights to Atlanta
- Flights to Seattle