₹12,342 Cheap Flights from Washington (IAD) to Seattle (SEA)

View ₹12,342 flight on Sun, 23 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ₹12,342 for one-way flights and ₹20,169 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 29 May - Thu, 4 Jun
IAD
Washington
SEA
Seattle
₹20,169 Return, found 4 days ago
₹20,169
Return
found 4 days ago
Select Delta flight, departing Fri, 29 May from Washington to Seattle, returning Thu, 4 Jun, priced at ₹20,169 found 4 days ago
Delta
Tue, 2 Jun - Fri, 5 Jun
IAD
Washington
SEA
Seattle
₹25,753 Return, found 4 days ago
₹25,753
Return
found 4 days ago
Select Delta flight, departing Tue, 2 Jun from Washington to Seattle, returning Fri, 5 Jun, priced at ₹25,753 found 4 days ago
Delta
Tue, 2 Jun - Fri, 5 Jun
IAD
Washington
SEA
Seattle
₹26,665 Return, found 4 days ago
₹26,665
Return
found 4 days ago
Select Delta flight, departing Tue, 2 Jun from Washington to Seattle, returning Fri, 5 Jun, priced at ₹26,665 found 4 days ago
Delta
Tue, 2 Jun - Fri, 12 Jun
IAD
Washington
SEA
Seattle
₹27,362 Return, found 1 day ago
₹27,362
Return
found 1 day ago
Select Delta flight, departing Tue, 2 Jun from Washington to Seattle, returning Fri, 12 Jun, priced at ₹27,362 found 1 day ago
Delta
Tue, 2 Jun - Fri, 5 Jun
IAD
Washington
SEA
Seattle
₹27,577 Return, found 4 days ago
₹27,577
Return
found 4 days ago
Select Delta flight, departing Tue, 2 Jun from Washington to Seattle, returning Fri, 5 Jun, priced at ₹27,577 found 4 days ago
Delta
Mon, 24 Aug - Tue, 1 Sept
IAD
Washington
SEA
Seattle
₹27,967 Return, found 4 days ago
₹27,967
Return
found 4 days ago
Select Delta flight, departing Mon, 24 Aug from Washington to Seattle, returning Tue, 1 Sept, priced at ₹27,967 found 4 days ago
Delta
Mon, 24 Aug - Tue, 1 Sept
IAD
Washington
SEA
Seattle
₹29,005 Return, found 4 days ago
₹29,005
Return
found 4 days ago
Select Delta flight, departing Mon, 24 Aug from Washington to Seattle, returning Tue, 1 Sept, priced at ₹29,005 found 4 days ago
Delta
Fri, 29 May - Thu, 4 Jun
IAD
Washington
SEA
Seattle
₹30,241 Return, found 4 days ago
₹30,241
Return
found 4 days ago
Select Delta flight, departing Fri, 29 May from Washington to Seattle, returning Thu, 4 Jun, priced at ₹30,241 found 4 days ago
United
Tue, 2 Jun - Fri, 5 Jun
IAD
Washington
SEA
Seattle
₹30,871 Return, found 4 days ago
₹30,871
Return
found 4 days ago
Select United flight, departing Tue, 2 Jun from Washington to Seattle, returning Fri, 5 Jun, priced at ₹30,871 found 4 days ago
American Airlines
Mon, 24 Aug - Tue, 1 Sept
IAD
Washington
SEA
Seattle
₹32,153 Return, found 4 days ago
₹32,153
Return
found 4 days ago
Select American Airlines flight, departing Mon, 24 Aug from Washington to Seattle, returning Tue, 1 Sept, priced at ₹32,153 found 4 days ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from ₹41,648
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from ₹41,648

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 ₹20,169. 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 cancelled online, but whether you incur a fee differs between airlines. If you do need to cancel your holiday, 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 kilometres. Set up a playlist of your favourite 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.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Return price
₹20,169
Distance
3679 km
Average flight time
2 hours 48 mins

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