$68 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 $107

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.?

Explore the best time to buy affordable tickets to Washington D.C. with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

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 $68

Alaska Airlines

From $93

Delta Air Lines

From $114

American Airlines

From $117

United Airlines

From $125

Sun Country Airlines

From $138

Southwest Airlines

From $149

Jetblue Airways

From $150

Spirit Airlines

From $747

Find more flights and airlines

Alternative Cheap Routes from Seattle to Washington D.C.

Searching for potential routes that might be cheaper and faster? There are a few alternative ways to get to Washington D.C. from Seattle which could help you save money and time.

Cheapest
SEA
15:15
17h 51m
1 transfer
DCA
12:06
Seattle-Tacoma International Airport - Ronald Reagan Washington National Airport
Mon, Feb 3Frontier Airlines
$68
SEA
09:54
5h 3m
Nonstop
IAD
17:57
Seattle-Tacoma International Airport - Dulles International Airport
Wed, Jan 8Alaska Airlines
$107
SEA
09:54
5h 3m
Nonstop
IAD
17:57
Seattle-Tacoma International Airport - Dulles International Airport
Wed, Jan 8Alaska Airlines
$107
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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 $296.
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 8 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, Qatar Airways, Virgin Atlantic, United Airlines, Alaska Airlines, Singapore Airlines, Korean Air, Air Tahiti Nui, Austrian Airlines, China Eastern Airlines, Delta Air Lines, Japan Airlines, Ethiopian Airlines and avianca.

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

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.

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	$68
Cheapest round-trip ticket price	$184
Off-season for travel	November
Peak season for travel	August
Flight distance	3,736.07 km
Average flight time	5 hours 8 minutes
Popular airline	American Airlines