US$49️ Cheap Flights from Seattle to Washington D.C. (2024)

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Seattle to Washington D.C. - Flights Starting at US$49

Book one-way or return flights from Seattle to Washington D.C. from as little as US$49. Choose from the popular airlines below and book your flight today!

One way
Round-trip

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

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize the best deals effortlessly

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

Cheapest airlines flights from Seattle to Washington D.C.

View airlines operating flights from Seattle to Washington D.C.. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From US$49

American Airlines

From US$98

Sun Country Airlines

From US$102

Alaska Airlines

From US$107

Delta Air Lines

From US$126

United Airlines

From US$148

Jetblue Airways

From US$160

Southwest Airlines

From US$178

Spirit Airlines

From US$308

ANA airlines

Find more flights and airlines

Alternative Routes from Seattle to Washington D.C.

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Seattle to Washington D.C..

Cheapest
SEA
17:58
15h 2m
1 transfer
DCA
12:00
Seattle-Tacoma International Airport - Ronald Reagan Washington National Airport
Wed, May 1Frontier Airlines
US$49
SEA
16:45
15h 7m
1 transfer
IAD
10:52
Seattle-Tacoma International Airport - Dulles International Airport
Wed, May 1Sun Country Airlines
US$102
SEA
16:45
15h 7m
1 transfer
IAD
10:52
Seattle-Tacoma International Airport - Dulles International Airport
Wed, May 1Sun Country Airlines
US$102
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 $385.
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 41 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, Air Tahiti Nui, Virgin Atlantic, United Airlines, Scandinavian Airlines, Singapore Airlines, Korean Air, Delta Air Lines, Alaska Airlines, Austrian Airlines, China Eastern Airlines, Japan Airlines, Qatar Airways and Ethiopian Airlines.

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

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Washington D.C.. Book your flights at the right time and save more.

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

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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

Seattle to Washington D.C. Flight Information

Cheapest nonstop flight price	$48
Cheapest round-trip ticket price	$170
Off-season for travel	May
Peak season for travel	October
Flight distance	3,736.07km
Average flight time	5 hours 41 minutes
Popular airline	Alaska Airlines