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Cheap Flights from IAD to SEA starting at $129 One Way, $252 Round Trip
Prices starting at $252 for return flights and $129 for one-way flights to Seattle - Tacoma Intl. were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
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Map To Nearby Hotels
- IAD To SEA Info
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IAD to SEA Route Info
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Other Flights from Washington Dulles Intl. Airport (IAD)
Other Flights to Seattle - Tacoma Intl. Airport (SEA)
- Manassas Regional Airport (MNZ)
- Montgomery County Airpark Airport (GAI)
- Ronald Reagan Washington National Airport (DCA)
- Tipton Airport (FME)
- Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
- Hagerstown Regional Airport (HGR)
- Easton - Newnam Airport (ESN)
- Charlottesville-Albemarle Airport (CHO)
- Shenandoah Valley Regional Airport (SHD)
- Capital City Airport (HAR)
Frequently asked questions
Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.