Cheap Flights from Washington (IAD) to Seattle (SEA)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Seattle-Tacoma International Airport (SEA)

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Frequently asked questions

How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Sea-Tac Airport?
Book your trip with Alaska Airlines and you'll be cruising the skies for roughly 5 hours and 40 minutes. This leading airline operates a direct flight that sets off at 7:40AM from Washington Dulles Intl. Airport (IAD) and arrives at SEA at 10:20AM. Expedia has some epic flight deals, so take a peek at what's available on this route today.
Is it cheaper to buy a plane ticket from Dulles Intl. Airport to Sea-Tac Airport last minute?
Booking your trip from Dulles Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) at the last minute could help you save if you stumble on an awesome deal. However, fares usually don't drop in price closer to the departure date. If you hold off, flights could also be booked up or the best seats taken (don't get stuck in the middle!). If you'd rather play it safe, book well ahead of when you want to leave. In fact, you can find some of the biggest deals up to a year in advance. If your favorite airline hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.
What airline has the least delays from IAD to Sea-Tac Airport?
Travel with United Airlines from Washington Dulles Intl. Airport (IAD) to Seattle - Tacoma Intl. Airport (SEA) and you're more likely to hit the tarmac at the time that's on your plane ticket. This carrier is the top performer on this route, with 87% of on-time arrivals. If there is a delay to your flight, the free Expedia App is a great way to stay in the loop. Download it and receive immediate trip notifications, from flight delays to gate changes and more.
What airports do you fly into for Seattle from Washington?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to select from, making your way from Washington to Seattle is no sweat. The city's major gateway, Seattle - Tacoma Intl. Airport (SEA), is around 19 kilometers south of the downtown area. Besides ticket costs, consider things like transportation options from the airport and the distance to your hotel when deciding where to touch down. Get your Seattle trip off to a flying start by visiting Space Needle and Pike Place Market.
What are the most popular departure times for flights from IAD to Sea-Tac Airport?
The most popular departure times for trips from Dulles Intl. Airport to SEA are between 5:00 PM - 6:00 PM on United Airlines. Our recommendation is to jet out in the morning. The earlier you leave, the better your odds of a delay-free flight with less air traffic in the skies.
Can I change the date of my flight from Dulles Intl. Airport to SEA?
It's a breeze to make amendments to your IAD to SEA trip yourself. Access your itinerary via the Expedia Trips portal and tap "change flight." Look for new flights and secure the one that fits your plans. You'll see an estimate of flight change fees that may apply. You can also use our Customer Service portal to chat to our Virtual Agent and quickly get answers to all your questions.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
3679 km
Average flight time
2 hours 58 mins

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Washington to Seattle Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to Seattle offer the perfect respite. Not only does exploring Seattle provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Washington to Seattle may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Seattle are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Seattle more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is now!

Washington to Seattle Flights

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