Cheap Flight Tickets from Washington (DCA) to Seattle (SEA), Starting at $467

Good to Know: Cheapest and Fastest DCA - SEA Flights

Useful information for finding best airline tickets from Ronald Reagan Washington National to Seattle Tacoma International on your next trip.

Cheapest Round Trip Flight

$517

DL Delta Airlines • 1 stop • 17h 30m

Dec 07 – Dec 13

The cheapest round trip flight from Washington to Seattle (DCA-SEA-DCA) is currently $517

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Cheapest Direct Flight

$467

DL Delta Airlines • nonstop • 10h 20m

Dec 07

The cheapest nonstop flight from Washington to Seattle (DCA-SEA) is currently $467

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Fastest Flight

10h 10m

The fastest nonstop flight from Washington to Seattle (DCA-SEA) takes 10h 10m

Top Airlines Flying from Washington to Seattle

Delta Airline, DL

Delta Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Washington (DCA) to Seattle (SEA)

Compare and book low fare round-trip air tickets from Washington to Seattle. Ideal for travelers with confirmed return itineraries.

Dec 07 - Dec 13, Economy
DL
Washington → Seattle
17h 30m
4:05 PM - 11:55 PM • 1 stop
DL
Washington → Seattle
7h 26m
7:20 AM - 3:06 PM • nonstop
$517
Delta Airlines
Dec 20 - Dec 26, Economy
F9
Washington → Seattle
35h 17m
6:05 PM - 12:22 PM • 1 stop
F9
Washington → Seattle
32h 38m
1:27 PM - 12:25 PM • 1 stop
$555
Frontier Airlines
Dec 20 - Dec 26, Economy
AS
Washington → Seattle
10h 19m
8:00 AM - 11:19 AM • nonstop
AS
Washington → Seattle
8h 26m
8:00 AM - 4:06 PM • nonstop
$690
Alaska Airlines
Dec 20 - Dec 26, Economy
DL
Washington → Seattle
10h 21m
5:10 PM - 8:31 PM • nonstop
DL
Washington → Seattle
7h 25m
8:15 AM - 4:00 PM • nonstop
$690
Delta Airlines
Dec 20 - Dec 26, Economy
AS
Washington → Seattle
10h 10m
5:00 PM - 8:10 PM • nonstop
AS
Washington → Seattle
8h 20m
1:59 PM - 9:59 PM • nonstop
$690
Alaska Airlines
Dec 20 - Dec 26, Economy
AA
Washington → Seattle
13h 26m
5:00 AM - 10:06 AM • 1 stop
AA
Washington → Seattle
11h 45m
6:29 AM - 4:34 PM • 1 stop
$693
American Airlines

Fly from Washington to Seattle with the Best Airfare Deals on FareLeaders

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.

FAQs on Washington to Seattle Flights

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from DCA to SEA?
The most popular airline flying from Washington to Seattle are
Can I fly from DCA to SEA non-stop?
Yes, you can fly DCA 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 DCA to SEA Airport?
The earliest flight leaves DCA at 5:00 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 DCA 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 DCA to SEA, which is 2328.47 miles by air.
Which airlines provide the cheapest flights from Washington (DCA) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from DCA were found on AS : USD 690
Do I need a passport to fly between DCA and SEA?
No
What’s the latest departure time from DCA to SEA ?
The last flight leaves DCA at 6:05 pm

Essential Information for Booking Flights from Washington (DCA) - AI Insights

What's the cheapest airline from dca to sea?
You can find the cheapest flights from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) with a premium economy class ticket. Southwest Airlines (WN) operates flights with one stop. Booking at least 40 days in advance can help you secure a low fare. Low fares are available on budget-friendly flights, and you can book your airfare through a travel agency or online web portal.
What's the popular airline to fly from dca to sea?
You can fly from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) on Alaska Airlines. Alaska Airlines offers premium economy seats with enhanced comfort and amenities. Please book your flight at least 40 days in advance to get the best low fares. You can find the cheapest airfares on our website.
What's the cheapest day of the week to fly from dca to sea?
The cheapest day to fly from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) is Sunday. Flying on Sundays can result in budget-friendly flights, making it an ideal option for travelers.
What's the cheapest month to fly from dca to sea?
The cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) is July, as it tends to have lower airfares compared to other summer months. You can expect to find budget-friendly flights during this time. Low fares are available for Premium Economy tickets on this route.
Which airline/airlines fly from dca to sea?
The airlines that fly from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) include American Airlines, United Airlines, Alaska Airlines, Delta Airlines, Southwest Airlines, Frontier Airlines, JetBlue Airways, and WestJet Airlines.
What is the cheapest airline to fly from Ronald Reagan Washington National Airport (DCA) to Seattle Tacoma International Airport (SEA) for a round trip with 6 passengers in Premium Economy?
Southwest Airlines (WN)
How far in advance can I book my airfare for a July flight from Milwaukee to Seattle?
Book at least 40 days in advance to get the best deals.
What is the best way to find the best airfare deals on flights from Milwaukee to Seattle?
Use fareleaders.com to compare airfares and find the cheapest flights.
How do I book flights through an agency for my next trip?
You can book flights through an agency on fareleaders.com or other reputable travel websites.
What is the meaning of 'viajar' in Spanish and how does it relate to booking flights on a website?
Viajar is the Spanish word for 'to travel' and can be used to describe booking flights on a website like fareleaders.com.

Washington (DCA) to Seattle (SEA): Airport Information

Origin Airport Ronald Reagan Washington National , Washington, US
Destination Airport Seattle Tacoma International , Seattle, US
Distance 2328 miles

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