Flights from Washington, DC to Seattle
Cheap IAD to Seattle flights
Book your IAD to SEA flights with Expedia and find last-minute Washington, DC to Seattle airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between IAD and SEA, with new flight deals and promotions almost daily. When you book your next trip from Washington Dulles Intl. to Seattle Tacoma Intl. with Expedia, you can rest assured you’re getting great ticket prices and excellent service from one of the world’s most trusted travel providers.
Discount flights from Washington, DC to Seattle airfare
Browse the best deals on flights from IAD to SEA. Deals are based on recent deals found by other Expedia users like you. Pricing may have changed for individual airlines. Expand the list to see all available flight deals from IAD to SEA.
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Last Minute Washington, DC Flight Deals
Traveling on short notice? Expedia offers great deals on last-minute flights from Washington, DC Airport to the most popular destinations. Deals are based on recent prices found by other Expedia users within the last 12 hours. Prices change often for individual airlines, so check back regularly!
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Washington, District of Columbia (IAD) to Seattle, Washington (SEA)
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- Roundtrip (including all taxes and fees)
- Per Adult
- Based on e-ticket purchase
- Shown without coupon discounts
The lowest roundtrip price(s) recently found
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| Airport | Flight To | Travel Dates (Nights) |
Hotel Rating | Package Discount |
Price per Passenger |
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Popular Flights from Washington, DC, District of Columbia
Browse popular flight destinations from Washington, DC (IAD), and plan your next exciting trip. Expedia has cheap flights from Washington, DC on multiple airline carriers, so book your next trip today!
Popular Flights from Seattle, Washington
Browse popular flight destinations from Seattle (SEA), and plan your next exciting trip. Expedia has cheap flights from Seattle on multiple airline carriers, so book your next trip today!
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IAD to SEA Route Map
Washington, DC to Seattle Flights, Stats and Airplanes
Route information for flights from Washington Dulles Intl. to Seattle Tacoma Intl..
Origin:
Destination:
Distance:
2,299.97 miles
Airline carriers and aircraft used on flights from IAD to SEA
Airline Carrier
Continental Airlines
Continental Airlines
Continental Airlines
United Airlines
United Airlines
United Airlines
US Airways
US Airways
US Airways
Aircraft
Airbus A319
Airbus A320-100/200
Boeing 757-200 pax
Airbus A319
Airbus A320-100/200
Boeing 757-200 pax
Airbus A319
Airbus A320-100/200
Boeing 757-200 pax
IAD - Washington Dulles Intl. Airlines
Browse the the most popular airlines servicing the Washington, DC (IAD) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.
SEA - Seattle Tacoma Intl. Airlines
Browse the most popular airlines servicing the Seattle (SEA) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.
Interesting Facts About Flights from Washington, DC to Seattle (IAD to SEA)
- Flight #917, operated by UNITED, was the flight with the most delays in 2009, with 3 minutes average delay between flights from Washington to Seattle.
- UNITED operated flights from IAD to SEA using 5 types of aircraft in 2009.
- UNITED carried a total of 145,186 passengers from IAD to SEA in 2009.
- The average flight time from Washington, DC to Seattle, WA takes about 310 minutes.
- 167,823 seats were available on flights from IAD to SEA in 2009. Of those seats, a total of 145,186 passengers flew on all flights from IAD to SEA that year.
- The smallest aircraft servicing flights from IAD to SEA for UNITED is the A319 built by Airbus Industrie with 120 seats.
- There were 145,186 passengers that flew from Washington to Seattle in 2009.
- The oldest aircraft servicing trips from Washington, DC to Seattle, WA in 2009 was UNITED's B757-2 from Boeing which started flying in 1990.
- UNITED operates the shortest flights from Washington to Seattle.
- UNITED offers the shortest flight times from Washington to Seattle.
- UNITED offers flights from Washington, DC to Seattle, WA.
- The average aircraft occupancy on flights from Washington to Seattle in 2009 was 86.27%.
- In 2009, there was just one airline company serving flights from Washington to Seattle.
- The largest aircraft servicing flights between Washington and Seattle from UNITED is the B777-2 built by Boeing with 258 seats.
- The shortest flight between IAD and SEA takes about 310 minutes.
- The newest aircraft servicing IAD to SEA in 2009 was UNITED's A319 from Airbus Industrie. The A319 started flying in 1997.
- The shortest flight distance between Washington and Seattle is 2306 miles.
(Source: FAA & BTS 2009 Databases)
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