
$149 Cheap Delta flights Washington (IAD) to Seattle (SEA)
Prices were available within the past 7 days and start at $149 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 18 - Wed, Dec 3
IAD
Washington
SEA
Seattle
$257 Roundtrip, found 10 hours ago
$257
Roundtrip
found 10 hours ago

Sat, Nov 22 - Thu, Dec 4
IAD
Washington
SEA
Seattle
$322 Roundtrip, found 10 hours ago
$322
Roundtrip
found 10 hours ago

Fri, Nov 21 - Thu, Dec 4
IAD
Washington
SEA
Seattle
$358 Roundtrip, found 10 hours ago
$358
Roundtrip
found 10 hours ago

Fri, Nov 21 - Tue, Dec 2
IAD
Washington
SEA
Seattle
$423 Roundtrip, found 10 hours ago
$423
Roundtrip
found 10 hours ago

Fri, Nov 21 - Mon, Dec 1
IAD
Washington
SEA
Seattle
$447 Roundtrip, found 10 hours ago
$447
Roundtrip
found 10 hours ago

Fri, Nov 21 - Tue, Dec 2
IAD
Washington
SEA
Seattle
$457 Roundtrip, found 10 hours ago
$457
Roundtrip
found 10 hours ago
Travel information
Travel information
Origin airport | Washington Dulles Intl. |
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United |
Popular airline | Delta |
Distance | 3679 km |
Average flight time | 2 hours 44 mins |
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Most Popular Delta Routes from Washington
Most Popular Delta Routes from Seattle
- Baltimore to Miami (BWI - MIA)
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- Boston to London (BOS - LHR)
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- Houston to Accra (IAH - ACC)
- Palm Springs to San Francisco (PSP - SFO)
Popular Domestic Routes in Seattle - Tacoma Intl.
- Nashville to New York (BNA - LGA)
- Columbia to Hartford (CAE - BDL)
- Syracuse to Austin (SYR - AUS)
- Newark Liberty Intl. Airport to San Diego (EWR - SAN)
- Baltimore to Miami (BWI - MIA)
- New York to Orlando (JFK - MCO)
- New York to Orlando (JFK - MCO)
- Baltimore to Miami (BWI - MIA)
- Washington to Miami (DCA - MIA)
- Miami to Paris (MIA - CDG)