Search & Compare - Washington to Seattle Flights & Tickets

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Cheap flights from Washington to Seattle (IAD to SEA)

Looking for a cheap last-minute deal or the best round-trip flight from Washington to Seattle? Find the biggest savings on one-way and round-trip tickets right here.

Good to know

Useful information for finding cheap flights from Washington Dulles International to Seattle Tacoma International and booking your next trip

Cheapest Round Trip Flight

$441

UA United Airlines • 1 stop • 11h 59m

Jun 25 – Jul 01

The cheapest round trip flight from Washington Dulles International to Seattle Tacoma International is currently $441

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Cheapest Direct Flight

$686

AA American Airlines • nonstop •

Jun 25

The cheapest nonstop flight from Washington Dulles International to Seattle Tacoma International is currently $686

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Fastest Flight

9h 8m

The fastest nonstop flight from Washington Dulles International to Seattle Tacoma International takes 9h 8m

Recent airfare deals on Washington to Seattle

Jun 25 - Jul 01, Economy
UA
Washington → Seattle
11h 59m
3:49 PM - 8:06 AM • 1 stop
UA
Washington → Seattle
10h 25m
11:16 AM - 11:15 PM • 1 stop
$441
United Airlines
Jun 25 - Jul 01, Economy
UA
Washington → Seattle
11h 56m
3:49 PM - 10:35 PM • 1 stop
UA
Washington → Seattle
10h 27m
2:29 PM - 1:41 PM • 1 stop
$453
United Airlines
Jun 25 - Jul 01, Economy
UA
Washington → Seattle
13h 27m
4:05 PM - 1:04 AM • 1 stop
UA
Washington → Seattle
10h 26m
3:50 PM - 5:29 AM • 1 stop
$474
United Airlines
Jun 25 - Jul 01, Economy
UA
Washington → Seattle
10h 36m
3:50 PM - 10:05 PM • 1 stop
AS
Washington → Seattle
10h 6m
1:50 PM - 12:35 AM • 1 stop
$570
United Airlines
Jun 25 - Jul 01, Economy
UA
Washington → Seattle
12h 1m
3:49 PM - 10:40 PM • 1 stop
AS
Washington → Seattle
10h 19m
8:08 AM - 12:35 AM • 1 stop
$595
United Airlines
Jun 25 - Jul 01, Economy
UA
Washington → Seattle
13h 27m
4:10 PM - 11:00 PM • 1 stop
AS
Washington → Seattle
8h 21m
10:20 PM - 6:21 AM • nonstop
$731
United Airlines

Facts to know while booking flights from Washington to Seattle

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from IAD to SEA?
The most popular airline flying from Washington to Seattle are
Can I fly from IAD to SEA non-stop?
Yes, you can fly IAD to SEA non-stop on
Which airlines fly nonstop between Washington and Seattle?
The non-stop flights between Washington and Seattle are .
What’s the earliest departure time from IAD to SEA Airport?
The earliest flight leaves IAD at 9:05 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Washington to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from IAD to SEA?
Read the fare rules of the Washington to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and Seattle?
operate flights between Washington and Seattle
How long does a flight from Washington to Seattle take?
It takes approximately 5 hour to fly non-stop from IAD to SEA, which is 2305.73 miles by air.
Which airlines provide the cheapest flights from Washington (IAD) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from IAD were found on ('UA') : USD 453
Do I need a passport to fly between IAD and SEA?
No
What’s the latest departure time from IAD to SEA ?
The last flight leaves IAD at 5:4800 pm

Flights from Washington to Seattle

Origin Airport Washington Dulles International , Washington, US
Destination Airport Seattle Tacoma International , Seattle, US
Distance miles

Popular Airlines

Southwest Airlines-WN
Delta Airline, DL
United Airlines, UA
Sun Country Airlines (SY)
American Airlines, AA
Hawaiian Airlines-HA
Alaska Airlines -AS

Popular Origin & Destination

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