SEA to IAD (Seattle to Washington) Flights

Last Minute Flights from SEA to IAD

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
SEAChantillyMay 2 to May 6$371
*Prices include taxes and fees

Cheapest SEA to IAD Flights

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
SEAChantillyMay 30 to June 2$228
SEAChantillyMay 27 to June 4$237
SEAChantillyMay 24 to May 27$237
PAEChantillyMay 28 to June 6$275
*Prices include taxes and fees
SEA to IAD Flight Details
Origin airport
Seattle - Tacoma Intl.
Origin airport IATA code
SEA
Destination airport
Washington Dulles Intl.
Destination airport IATA code
IAD
Distance
2299 mi

Frequently asked questions

What airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to IAD?
Check out Alaska Airlines (AS). It has 78 flights per month that jet straight from Seattle - Tacoma Intl. Airport (SEA) to IAD. With 56 nonstop monthly services of its own on this air route, Delta Air Lines (DL) is another favorite.
How many flights are there from SEA to IAD?
About 6 each day. If you’re in a hurry to visit Chantilly, see if you can grab a fabulous last-minute deal from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.) and then secure it quick!
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.) takes on average 4 hours and 58 minutes. That’s an ideal amount of time to start watching a new series, get immersed in a podcast or enjoy some shut-eye.
What is the flight distance from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Around 2,300 miles (3,700 1) separates SeaTac and Chantilly, making it a medium-haul flight. No quick hop yet no endurance race, pack your carry-on accordingly to help make your flight a comfortable one.
How many morning flights are there from SEA to IAD?
Every week, 25 flights jet off from SEA to IAD before noon. Alaska Airlines (AS) operates 11 morning flights per week, with the first one leaving the runway at 7:35AM.
How many afternoon flights are there from SEA to IAD?
There are 19 afternoon and evening flights from SEA to IAD per week. Alaska Airlines (AS) offers 7 weekly flights after midday. With the earliest one departing the runway at 4:03PM, you’ll have time to relax before boarding.
What is the earliest departure time out of SeaTac to Chantilly?
The earliest flight leaves SEA at 7:35AM and touches down at IAD at 12:40PM. Remember to give yourself enough time in the morning to easily get to the check-in counter.
What is the latest departure time out of SeaTac to Chantilly?
From SEA, the latest flight jets out at 10:30PM and comes in at IAD at 3:25AM. If you’re not into early mornings, this is the flight to catch.
What is the average price from SeaTac to Chantilly?
Round-trip flights from SEA to IAD begin from around $228. Secure your booking today and score a sensational deal. This price was available on Flights.com within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Seattle to Washington Flights

Whether it’s for an obligation or the sake of your sanity, sometimes you need to get away. Maybe you need flights from Seattle to Washington to attend your cousin’s wedding, to pitch a business idea to your boss, or simply treat yourself to a mini vacation. Regardless of the reasons behind packing your bags and needing to find our cheapest flights from SEA to IAD, we’ve got you covered here at Flights.com.

We present you with some of the most affordable deals on airfare, so stop that Google flights search. We want you to spend less on your flight from Seattle to Washington, so you can spend more during your getaway. With Flights.com, you’ll find it simple to land airline tickets with itineraries matching your travel schedule. What’s more, we provide you with all the information you need to confidently make reservations on your family, business, or personal trip.