Search & Compare - Seattle to Washington Flights & Tickets

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Cheap flights from Seattle to Washington (SEA to IAD)

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

Good to know

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

Cheapest Round Trip Flight

$509

UA United Airlines • 1 stop • 12h 4m

Jun 26 – Jun 29

The cheapest round trip flight from Seattle Tacoma International to Washington Dulles International is currently $509

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Cheapest Direct Flight

$503

UA United Airlines • nonstop • 7h 37m

Jun 26

The cheapest nonstop flight from Seattle Tacoma International to Washington Dulles International is currently $503

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Fastest Flight

7h 37m

The fastest nonstop flight from Seattle Tacoma International to Washington Dulles International takes 7h 37m

Recent airfare deals on Seattle to Washington

Jun 26 - Jun 29, Economy
UA
Seattle → Washington
12h 4m
7:00 PM - 5:24 AM • 1 stop
UA
Seattle → Washington
9h 13m
5:55 PM - 8:48 PM • nonstop
$509
United Airlines
Jun 26 - Jun 29, Economy
SY
Seattle → Washington
63h 27m
6:42 PM - 11:49 AM • 1 stop
SY
Seattle → Washington
16h 44m
3:46 PM - 10:50 PM • 1 stop
$747
Sun Country Airlines
Jun 26 - Jun 29, Economy
SY
Seattle → Washington
9h 6m
6:47 PM - 11:54 AM • 1 stop
SY
Seattle → Washington
10h 38m
3:51 PM - 10:55 PM • 1 stop
$747
Sun Country Airlines
Jun 26 - Jun 29, Economy
AS
Seattle → Washington
12h 4m
6:04 PM - 7:39 AM • 1 stop
UA
Seattle → Washington
13h 26m
10:23 PM - 12:40 PM • 1 stop
$1310
Alaska Airlines
Jun 26 - Jun 29, Economy
AS
Seattle → Washington
11h 52m
6:04 PM - 11:37 AM • 1 stop
UA
Seattle → Washington
10h 45m
5:15 PM - 6:13 AM • 1 stop
$1680
Alaska Airlines
Jun 26 - Jun 29, Economy
AS
Seattle → Washington
10h 23m
6:04 PM - 5:29 AM • 1 stop
UA
Seattle → Washington
18h 43m
5:48 PM - 5:05 AM • 1 stop
$1747
Alaska Airlines

Facts to know while booking flights from Seattle to Washington

What are the airports in Seattle?
SEA
What’s the most popular airline flying from SEA to IAD?
The most popular airline flying from Seattle to Washington are
Can I fly from SEA to IAD non-stop?
Yes, you can fly SEA to IAD non-stop on
Which airlines fly nonstop between Seattle and Washington?
The non-stop flights between Seattle and Washington are .
What’s the earliest departure time from SEA to IAD Airport?
The earliest flight leaves SEA at 4:04 pm and lands in IAD - Washington Dulles International
What are the airports in Washington?
IAD,BWI,DCA
Can I make changes to my Seattle to Washington 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 SEA to IAD?
Read the fare rules of the Seattle to Washington 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 Seattle and Washington?
operate flights between Seattle and Washington
How long does a flight from Seattle to Washington take?
It takes approximately 5 hour to fly non-stop from SEA to IAD, which is 2305.73 miles by air.
Which airlines provide the cheapest flights from Seattle (SEA) to Washington (IAD) ?
In the past couple of days, the cheapest tickets to IAD from SEA were found on ('AS') : USD 1680
Do I need a passport to fly between SEA and IAD?
No
What’s the latest departure time from SEA to IAD ?
The last flight leaves SEA at 11:3000 pm

Flights from Seattle to Washington

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