Cheap Flights from Seattle / Tacoma International (SEA) to Washington Dulles (IAD)
Compare Seattle / Tacoma International to Washington Dulles flight deals
Find the cheapest month or even day of the year to fly to Washington Dulles
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Flight deals from Seattle / Tacoma International to Washington Dulles
Looking for a cheap last-minute deal or the best round-trip flight from Seattle / Tacoma International to Washington Dulles? Find the lowest prices on one-way and round-trip tickets right here.Don’t miss a great deal
Stay one step ahead. Find the best value travel with the latest deals, tips and news.
Find the cheapest month to fly from Seattle / Tacoma International to Washington Dulles
We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Washington Dulles flights are currently cheapest in May.Seattle / Tacoma International to Washington Dulles: Alternative routes
Compare routes from Seattle / Tacoma International to Washington, D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.Seattle to Washington, D.C.: Flight information
The things to know before you go.Cheapest flight found | $282 |
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Cheapest month to fly | June |
Average flight time | 5 hrs, 2 mins |
Most popular airline | Qatar Airways |
Average flights per week | 162 |
Finding cheap flights from Seattle / Tacoma International to Washington Dulles: Frequently asked questions
How to find cheap flights to Washington, D.C. (IAD) from Seattle (SEA) in 2024
Looking for cheap tickets from Seattle / Tacoma International to Washington Dulles? Round-trip tickets start from $282 and one-way flights to Washington Dulles from Seattle / Tacoma International start from $134
Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.
- Simply hit "search." From American Airlines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Seattle / Tacoma to Washington Dulles. And with us, there are no hidden fees – what you see is what you pay.
- Compare flight deals to Washington, D.C. from Seattle from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Washington, D.C. start from $134 one-way.
- Flex your dates to find the best SEA–IAD ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to Washington Dulles from Seattle / Tacoma International.
- Set up a Price Alert. You can easily track the fare of your cheap Seattle / Tacoma-Washington Dulles flights by creating an alert. Whenever prices go up or down, you'll get an email or push notification to help make sure you get the best possible flight deal.
- Fly without stops. Only interested in direct flights between Seattle / Tacoma International and Washington Dulles? Make sure to check "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: Singapore Airlines
Qatar Airways
Alaska Airlines
Air Tahiti Nui
United
Delta
KLM
China Eastern - Find the cheapest Business class flights from Seattle / Tacoma International and Washington Dulles. We scour the Internet for the best Business, Premium Economy and First Class flight fares to Washington, D.C., too. Check the difference in price as you search – you might just chance upon a last-minute deal. Note that not all cabin classes are available for every destination or airline.
- Flexible on when you travel? The cheapest month to fly from Seattle / Tacoma International to Washington Dulles is June.
- Include nearby airports in your search. Widen your search for Seattle / Tacoma International to Washington Dulles flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
- Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Seattle / Tacoma International and Washington Dulles whenever you want.
Combine your flight to Washington Dulles from Seattle / Tacoma International with hotels and car rental
Once you've secured your cheap flight ticket from Seattle / Tacoma International to Washington Dulles, discover the best prices and exclusive rates for hotels in Washington, D.C. or nearby. You can also compare hundreds of car rental companies all at once so you get the best car rental price for your trip.
Plan the rest of your trip from Seattle to Washington, D.C.
Prices shown on this page are estimated lowest prices only. Found in the last 45 days.