₩199,500 Cheap Flights from Washington (IAD) to Seattle (SEA)

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Cheap Flights from Washington to Seattle (IAD-SEA)

Prices were available within the past 7 days and start at ₩199,500 for one-way flights and ₩405,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Feb 15 - Wed, Feb 19
IAD
Washington
SEA
Seattle
₩405,000 Roundtrip, found 3 days ago
₩405,000
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Feb 15 from Washington to Seattle, returning Wed, Feb 19, priced at ₩405,000 found 3 days ago
Delta
Sun, Feb 16 - Tue, Feb 25
IAD
Washington
SEA
Seattle
₩405,300 Roundtrip, found 2 hours ago
₩405,300
Roundtrip
found 2 hours ago
Select Delta flight, departing Sun, Feb 16 from Washington to Seattle, returning Tue, Feb 25, priced at ₩405,300 found 2 hours ago
Delta
Wed, Feb 19 - Fri, Feb 28
IAD
Washington
SEA
Seattle
₩406,100 Roundtrip, found 1 day ago
₩406,100
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Feb 19 from Washington to Seattle, returning Fri, Feb 28, priced at ₩406,100 found 1 day ago
Delta
Tue, Feb 11 - Sun, Feb 16
IAD
Washington
SEA
Seattle
₩412,300 Roundtrip, found 2 days ago
₩412,300
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Feb 11 from Washington to Seattle, returning Sun, Feb 16, priced at ₩412,300 found 2 days ago
Delta
Sat, Feb 15 - Wed, Feb 19
IAD
Washington
SEA
Seattle
₩425,200 Roundtrip, found 3 days ago
₩425,200
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Feb 15 from Washington to Seattle, returning Wed, Feb 19, priced at ₩425,200 found 3 days ago
Delta
Tue, Feb 11 - Sun, Feb 16
IAD
Washington
SEA
Seattle
₩432,500 Roundtrip, found 2 days ago
₩432,500
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Feb 11 from Washington to Seattle, returning Sun, Feb 16, priced at ₩432,500 found 2 days ago
Delta
Sat, Feb 15 - Wed, Feb 19
IAD
Washington
SEA
Seattle
₩439,800 Roundtrip, found 3 days ago
₩439,800
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Feb 15 from Washington to Seattle, returning Wed, Feb 19, priced at ₩439,800 found 3 days ago
Delta
Sat, Feb 15 - Sat, Feb 22
IAD
Washington
SEA
Seattle
₩445,500 Roundtrip, found 2 days ago
₩445,500
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Feb 15 from Washington to Seattle, returning Sat, Feb 22, priced at ₩445,500 found 2 days ago
United
Sun, Feb 16 - Tue, Feb 25
IAD
Washington
SEA
Seattle
₩477,200 Roundtrip, found 2 hours ago
₩477,200
Roundtrip
found 2 hours ago
Select United flight, departing Sun, Feb 16 from Washington to Seattle, returning Tue, Feb 25, priced at ₩477,200 found 2 hours ago
American Airlines
Sun, Feb 16 - Tue, Feb 25
IAD
Washington
SEA
Seattle
₩577,000 Roundtrip, found 2 hours ago
₩577,000
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sun, Feb 16 from Washington to Seattle, returning Tue, Feb 25, priced at ₩577,000 found 2 hours ago
Flights from Washington (IAD) to Seattle (SEA)
Origin airport
Washington Dulles Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
₩405,000
Distance
3679 km
Average flight time
3 hours 1 min

Chantilly to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Chantilly to Seattle will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with IAD to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind Chantilly for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Seattle - Tacoma Intl. Airport (SEA)?
Start packing your bags, because round-trip flights from IAD to Sea-Tac Airport start from ₩405,000. That’s based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book today to get the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAD to Sea-Tac Airport?
Most flights can be conveniently canceled online, but whether you incur a fee differs between airlines. If you do need to cancel your vacation, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Dulles Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Dulles Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Dulles Intl. Airport to Seattle - Tacoma Intl. Airport (SEA)?
You’ll be in the air for a while, as the flight distance between Chantilly and SeaTac is 3,700 kilometers. Set up a playlist of your favorite songs before leaving home to keep yourself entertained during your trip.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to SEA?
United Airlines (UA) is a popular option. It offers 60 flights from IAD to Sea-Tac Airport each month. Offering 56 flights a month along this route, Alaska Airlines (AS) is another top pick.
Are IAD to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to find a fantastic last-minute deal from IAD to Seattle - Tacoma Intl. Airport (SEA), but it can also be hit-or-miss. As many airlines release seats up to 12 months in advance, it’s worthwhile keeping an eye on fares early and being ready to pounce when you see a good bargain. Expedia compares air carrier prices and updates flight deals frequently, so you can rest assured you’re always seeing the latest offers.
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