$58 Cheap Flights from Seattle to Washington D.C. (SEA to WAS)

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Cheap flight deals from Seattle to Washington D.C. Starting at $58

Whether you’re going for a one-way or round-trip to Washington D.C., we’ve got you covered! Check out these different flight options from Seattle below.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Seattle to Washington D.C.?

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Washington D.C. from Seattle have changed and are set to move below.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find cheap airlines flights from Seattle to Washington D.C.

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Seattle to Washington D.C..

Frontier Airlines

From $58

Spirit Airlines

From $85

American Airlines

From $122

United Airlines

From $135

Jetblue Airways

From $137

Southwest Airlines

From $183

Sun Country Airlines

From $231

Alaska Airlines

From $236

Delta Air Lines

From $237

ANA airlines

Find more flights and airlines

Alternative Cheap Routes from Seattle to Washington D.C.

There are various non-direct routes from Seattle to Washington D.C. which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

Cheapest
SEA
09:37
9h 22m
1 transfer
DCA
21:59
Seattle-Tacoma International Airport - Ronald Reagan Washington National Airport
Wed, Nov 6Frontier Airlines
$58
SEA
16:11
4h 48m
Direct
IAD
23:59
Seattle-Tacoma International Airport - Dulles International Airport
Wed, Oct 2Alaska Airlines
$236
SEA
16:11
4h 48m
Direct
IAD
23:59
Seattle-Tacoma International Airport - Dulles International Airport
Wed, Oct 2Alaska Airlines
$236
Find More Flights

Frequently Asked Questions

When are flight tickets from Seattle (SEA) to Washington D.C. (WAS) the cheapest?
Airlines adjust prices for flights from Seattle to Washington D.C. based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Seattle (SEA) to Washington D.C. (WAS) cost?
According to Trip.com's data, the lowest price is around $298.
How long does it take to fly from Seattle (SEA) to Washington D.C. (WAS) and what is the distance?
It takes around 5 hours 10 minutes to fly from Seattle (SEA) to Washington D.C. (WAS).
What are the most popular airlines that fly from Seattle (SEA) to Washington D.C. (WAS)?
Airlines with flights from Seattle (SEA) to Washington D.C. (WAS): Brussels Airlines, Iberia, Virgin Atlantic, All Nippon Airways, Air Tahiti Nui, United Airlines, Alaska Airlines, Singapore Airlines, Korean Air, Austrian Airlines, China Eastern Airlines, Delta Air Lines, Japan Airlines, Qatar Airways and Ethiopian Airlines.

How to find a cheap flight from Seattle to Washington D.C.

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Info | Seattle to Washington D.C.

Cheapest nonstop flight price	$57
Cheapest round-trip ticket price	$178
Off-season for travel	September
Peak season for travel	June
Flight distance	3,736.07km
Average flight time	5 hours 10 minutes
Popular airline	American Airlines