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Amazing SEA to IAD Flight Deals

The cheapest flights to Washington Dulles Intl. found within the past 7 days were $250 round trip and $127 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for SEA to IAD

Carrier Flight Depart SEA Arrive IAD Tue
7/7
Wed
7/8
Thu
7/9
Fri
7/10
Sat
7/11
Sun
7/12
Mon
7/13
Stops
AS 1188 08:10 am 04:00 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 640 08:32 am 04:44 pm Check fare Check fare Check fare Check fare - Check fare Check fare 0 stop(s)
AS 198 04:10 pm 11:59 pm Check fare Check fare - - - - - 0 stop(s)

Best Washington Dulles Intl. Flight and Hotel Packages

Washington Dulles Intl. flight + hotel packages - economy flights

FAQs about flights from Seattle - Tacoma Intl. Airport (SEA) to Washington Dulles Intl. Airport (IAD)

Are there direct flights from Sea-Tac Airport to Washington, DC (IAD-Washington Dulles Intl.)?

Sometimes, it's the journey that counts; other times, the magic is in the destination. But if you're eager to get to where you're headed fast, multiple airlines operate direct flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.), including Alaska Airlines and United Airlines.

How long is the flight from Sea-Tac Airport to Washington, DC (IAD-Washington Dulles Intl.)?

The travel time between Seattle, WA (SEA-Seattle - Tacoma Intl.) and Washington, DC (IAD-Washington Dulles Intl.) is ordinarily around 6 hours and 15 minutes. Make your journey comfortable by saving a few shows on your phone or laptop and enjoying them with your seat fully reclined.

What is the flight distance from Sea-Tac Airport to Washington, DC (IAD-Washington Dulles Intl.)?

From Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.), the flight distance is 2,672 miles. So, it's wise to have a good selection of entertainment options. Movies, books, music ... you name it. If you come prepared, it won't feel like too long before you hear the call to prepare for landing.

What airlines fly from Sea-Tac Airport to Washington, DC (IAD-Washington Dulles Intl.)?

If you're traveling to Washington from Seattle, you'll find a few airlines that fly direct. One of the most reputable carriers is Alaska Airlines (AS), which offers 65 flights every month. If you want more options, take a look at the deals on offer from United Airlines (UA). This airline has 73 flights every month. Between the two, you're sure to find the flight to suit your travel needs.

Flying Tips & Tricks How do I find my flight number?
  • The number is in your travel itinerary, which you'll receive when you've completed your booking. If you're not sure what to look out for, search for a code consisting of numbers and letters. The first couple of letters and single figure are the IATA airline code, which indicates the name of your airline. This part is followed by one, two, three or four digits — your flight number.
How early can you check bags for a flight?
  • For international flights, check-in and luggage drop open approximately three hours before departure and close an hour before takeoff. For domestic flights, check-in and baggage drop open two hours before departure and close 45 minutes before departure. These times can vary between airlines, so check before you head off.

SEA to IAD Frequently Asked Questions

Seattle - Tacoma Intl. to Washington Dulles Intl. Flight FAQ

Traveling FromSeattle - Tacoma Intl.
Traveling ToWashington Dulles Intl.
Shortest Flight Time10 hours 50 mins
Earliest Departure Time8:32AM EDT
Latest Departure Time11:40AM EDT
Lowest Flight Price$250

Seattle to Washington Carriers and Route Information

Flight path for flights from Seattle-Tacoma International Airport to Washington Dulles International Airport


Distance:
2,313.00 miles


Airlines & Aircraft Used on SEA to IAD Flight Routes


Airline Carrier
Aircraft
Delta Air Lines
Canadair Regional Jet 700
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.