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The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $298 round trip and $149 one way. Prices and availability subject to change. Additional terms may apply.
|Carrier||Flight||Depart IAD||Arrive SEA||Sat |
|UA326||05:25 pm||08:18 pm||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare|
|AS1078||07:30 pm||10:05 pm||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare|
|AS1376||07:00 am||09:35 am|
|Check Fare||Check Fare||Check Fare||Check Fare||Check Fare||Check Fare|
|DL1681||05:05 pm||07:53 pm|
|Check Fare||Check Fare|
|Check Fare||Check Fare||Check Fare|
|Traveling From||Washington Dulles Intl.|
|Traveling To||Seattle - Tacoma Intl.|
|Shortest Flight Time||5 hours 35 mins|
|Earliest Departure Time||7:00AM EDT|
|Latest Departure Time||7:30PM EDT|
|Lowest Flight Price||$298|
Flight path for flights from Washington Dulles International Airport to Seattle-Tacoma International Airport
Airlines & Aircraft Used on IAD to SEA Flight Routes
With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times.
Airfares to Seattle SEA from Washington IAD currently cost between $298 and $347. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply.
If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Washington IAD to Seattle SEA on Travelocity starting at $149. Prices and availability subject to change. Additional terms may apply.
Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from IAD to take around 5 hour(s) 35 min(s).
Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from IAD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.
If you’re flexible about when you travel, September is usually the cheapest month to fly from Washington IAD to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first.
Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from IAD have this option.
We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving.
Travelers at IAD love to visit these top cities. Roam to the top destinations from Washington (IAD) today with the cheap prices from Travelocity!
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