
$149 Cheap United flights Seattle (SEA) to Washington (IAD)
Prices were available within the past 7 days and start at $149 for one-way flights and $287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 30 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$287 Roundtrip, found 21 hours ago
$287
Roundtrip
found 21 hours ago

Mon, Aug 4 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$309 Roundtrip, found 15 hours ago
$309
Roundtrip
found 15 hours ago

Wed, Jul 30 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$311 Roundtrip, found 21 hours ago
$311
Roundtrip
found 21 hours ago

Wed, Jul 30 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$311 Roundtrip, found 21 hours ago
$311
Roundtrip
found 21 hours ago

Wed, Jul 30 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$312 Roundtrip, found 21 hours ago
$312
Roundtrip
found 21 hours ago

Mon, Aug 4 - Tue, Aug 12
SEA
Seattle
IAD
Washington
$346 Roundtrip, found 15 hours ago
$346
Roundtrip
found 15 hours ago
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Washington Dulles Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United |
Popular airline | Delta |
Distance | 3679 km |
Average flight time | 8 hours 2 mins |
Most Popular United Routes from Seattle
Most Popular United Routes from Washington
- San Francisco to Orlando (SFO - MCO)
- New Orleans to Los Angeles (MSY - LAX)
- Richmond to Bozeman (RIC - BZN)
- Newark Liberty Intl. Airport to Raleigh (EWR - RDU)
- San Diego to Boston (SAN - BOS)
- Albany to Minneapolis (ALB - MSP)
- Roanoke to Omaha (ROA - OMA)
- Charlotte to Newark Liberty Intl. Airport (CLT - EWR)
- Newark Liberty Intl. Airport to Denver (EWR - DEN)
- Orlando to San Juan (MCO - SJU)
Popular Domestic Routes in Washington Dulles Intl.
- Detroit to Tampa (DTW - TPA)
- Saginaw to Guadalajara (MBS - GDL)
- Bangor to Ontario (BGR - ONT)
- Las Vegas to Istanbul (LAS - IST)
- Laurel to Los Angeles (PIB - LAX)
- Atlanta to Denver (ATL - DEN)
- San Diego to Boston (SAN - BOS)
- Minneapolis to Newark Liberty Intl. Airport (MSP - EWR)
- Roanoke to Omaha (ROA - OMA)
- San Francisco to Orlando (SFO - MCO)