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IAD (Washington) to SEA (Seattle) Flights $319.8

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Here are your best fares found in the past 7 days

The lowest fare found for this route is $340.6 on Mon, Jul 03 from IAD to SEA
Flights Fare Calendar Find minimum fare between origin IAD and destination SEA Click this button to get previous 30 days data Click this button to get next 30 days data $734 $629 $524 $419 $314 $209 $104 $0 Jun Jul 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W Price is $ 629.5 on United Price is $ 620.9 on Alaska Airlines Price is $ 541.4 on United Price is $ 535.87 on JetBlue Airways Price is $ 532.6 on United Price is $ 532.08 on American Airlines Price is $ 525.99 on United Price is $ 506.95 on United Price is $ 499.8 on United Price is $ 484.91 on Delta Price is $ 480.01 on United Price is $ 471.4 on United Price is $ 471.4 on United Price is $ 450.81 on United Price is $ 447.0 on United Price is $ 447.0 on United Price is $ 446.81 on American Airlines Price is $ 443.7 on United Price is $ 443.7 on United Price is $ 443.7 on United Price is $ 443.7 on United Price is $ 442.5 on United Price is $ 442.5 on United Price is $ 441.6 on United Price is $ 438.4 on United Price is $ 438.4 on United Price is $ 429.34 on United Price is $ 428.13 on United Price is $ 427.6 on United Price is $ 423.28 on Alaska Airlines Price is $ 421.8 on United Price is $ 402.6 on Delta Price is $ 401.94 on Delta Price is $ 399.6 on American Airlines Price is $ 395.57 on United Price is $ 395.57 on United Price is $ 391.99 on Virgin America Price is $ 391.47 on United Price is $ 391.47 on Alaska Airlines Price is $ 391.47 on United Price is $ 391.47 on Alaska Airlines Price is $ 391.47 on Alaska Airlines Price is $ 387.7 on United Price is $ 387.7 on United Price is $ 387.7 on United Price is $ 387.5 on JetBlue Airways Price is $ 387.5 on JetBlue Airways Price is $ 383.6 on United Price is $ 383.58 on Delta Price is $ 372.82 on Delta Price is $ 371.6 on Delta Price is $ 368.78 on American Airlines Price is $ 368.6 on American Airlines Price is $ 363.56 on American Airlines Price is $ 346.37 on Delta Price is $ 343.55 on Delta Price is $ 343.55 on Delta Price is $ 343.55 on Delta Price is $ 343.55 on American Airlines Price is $ 340.6 on American Airlines

Cheap IAD to SEA Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Washington to Seattle (IAD to SEA)

Question : Do travelers from Dulles typically stay in Seattle for very long?
Answer : The average time spent in Seattle by passengers from Dulles is about one week.

Question : Can you cut down on flight costs by changing the day of the week you travel to Seattle?
Answer : In July, Tuesday is your cheapest day to fly. Being flexible with your travel days garners even more savings during booking.

Question : Should you take that vacation to Seattle in the next 30 days?
Answer : As of Jun 19th, the cheapest day to fly from Dulles to Seattle is Jul 12th. Tickets are currently being sold for $339, which is 37% below the average price for this route.

Question : How often are flights late from Washington Dulles International Airport (IAD) to Seattle-Tacoma International Airport (SEA)?
Answer : Flights from IAD to SEA are on time 82% of the time, ranking in the top 50% of the world. If a flight is delayed, though, expect an average of about half an hour added to your flight time.

Question : Which airline is struggling to get to Seattle on time?
Answer : Alaska Airlines is late on 23% of flights from Washington Dulles International Airport (IAD) to Seattle-Tacoma International Airport (SEA) at the moment. If you should choose this airline, be sure to track the flight status to stay on top of the departure time.

Question : About how long is the flight from Dulles to Seattle?
Answer : The average flight duration between IAD and SEA is five hours and 56 minutes.

Question : Is the price you found a good deal?
Answer : Flight prices change more than most routes in the United States for IAD to SEA. They range from $327 to $1,819. However, the sooner you book, the better price you tend to get.