Cheap flights from Seattle (SEA) to Washington, D.C. (WAS) from $113

This is the cheapest one-way flight price, found on 5/31. Prices may vary by date and flight preferences.
SEA — WAS
Jun 6 — Jun 131

The best prices from Seattle/Tacoma Intl to Washington, D.C. are usually found in January or February, booked 39 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from Seattle (SEA) to Washington, D.C. (WAS)

All the information you need to plan the best SEA to WAS flight in 2023: compare Seattle to Washington, D.C. flight prices with the expected peak season, weather and rainfall in Washington, D.C..

Popular in

June

Cheapest in

January

Round-trip from

$227

One-way from

$115
High demand for flights, 35% potential price rise
Best time to find cheap flights, 42% potential price drop
From Seattle/Tacoma Intl to Washington, D.C. (WAS)
One-way flight from Seattle/Tacoma Intl to Washington, D.C. (WAS)

SEA - WAS

Price

$227 - $378

WAS

Temperature

35.6 - 80.6 °F

WAS

Rainfall

2.6 - 4 inches

Cheap flights from Seattle to Washington, D.C. in June, July 2023

The best prices found for SEA to WAS flights for June, July
Check out some of the best flight deals from Seattle to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Seattle to Washington, D.C. 2023 flight deals

Cheap flights to Washington, D.C. from Seattle found for this year
Check out some of the best flight deals from Seattle to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Cheap United Airlines flights from Seattle to Washington, D.C.

Take a look at some of the lowest-priced United Airlines flights heading from Seattle to Washington, D.C.. It's recommended that users confirm their flight details before booking.
  • If you’re traveling from Seattle to Washington, D.C., one of the more common airlines traveling that route is United Airlines. Flights from United Airlines traveling this route typically cost $509.61 RT. This price is typically 64% more expensive than other airlines that offer Seattle to Washington, D.C. flights. When booking this route, the cheapest RT price found was $178. The most popular departure airport in Seattle when flying to Washington, D.C. is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting Washington, D.C. is Washington, D.C. Dulles Intl Airport. When flying from Seattle to Washington, D.C., United Airlines flights are 10% more popular than any other airline flying that same route.

Cheap Alaska Airlines flights from Seattle to Washington, D.C.

Some of the lowest-priced Alaska Airlines flights we've found at this time heading from Seattle to Washington, D.C.. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
  • Alaska Airlines is one of the most popular airlines used for those traveling from Seattle to Washington, D.C.. Flights on this route from Alaska Airlines typically cost $526.66 RT, a price that is 67% cheaper than the average Seattle to Washington, D.C. flight. The cheapest flight found was $179 RT. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Washington, D.C.. Washington, D.C. Dulles Intl Airport is the most popular arrival airport in Washington, D.C.. When flying from Seattle to Washington, D.C., Alaska Airlines flights are 8% more popular than any other airline flying that same route.

Non-stop flights to Washington, D.C. from Seattle

Save time with Seattle to Washington, D.C. direct flight deals
To help reduce your travel time, choose from one of these non-stop flights from Seattle to Washington, D.C.. Users seeking other options on flights from Seattle to Washington, D.C. should update the search form at the top of the page.

Last minute flights from Seattle to Washington, D.C.

Late deals on return flights to Washington, D.C. from Seattle, departing today and this week
Have a look at some of the last-minute flights available departing from Seattle to Washington, D.C.. It's wise to confirm all flight details are correct before booking.

One-way flights to Washington, D.C. from Seattle

The cheapest one-way flights from Seattle to Washington, D.C.
Take a look at some of the best available options we've come across on one-way flights from Seattle to Washington, D.C.. Users needing a return flight from Seattle to Washington, D.C. should utilize the search form above.

Find flights from Seattle to Washington, D.C. within your budget

Use the slider to find flights from Seattle to Washington, D.C. that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$231 - $353

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Reagan-National

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 9/7

1 stop10h 13m

Washington, D.C. Reagan-National

Wed 9/13

1 stop9h 39m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 7/11

1 stop8h 46m

Baltimore/Washington

Tue 7/18

1 stop13h 19m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 7/11

1 stop8h 46m

Baltimore/Washington

Sat 7/22

1 stop15h 00m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 10/2

1 stop7h 05m

Baltimore/Washington

Tue 10/10

1 stop8h 00m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 8/29

2 stops30h 30m

Baltimore/Washington

Sat 9/2

1 stop11h 24m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Sat 9/2

1 stop9h 27m

Baltimore/Washington

Fri 9/15

1 stop9h 17m

Seattle/Tacoma IntlBaltimore/Washington

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 6/19

1 stop15h 38m

Baltimore/Washington

Wed 6/21

2 stops31h 33m

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 10/17

1 stop16h 28m

Washington, D.C. Dulles Intl

Wed 11/15

1 stop14h 37m

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 9/1

Nonstop5h 01m

Washington, D.C. Dulles Intl

Thu 9/14

Nonstop6h 05m

Flights are sorted by cheapest first

Deals found on 5/31

Reviews of Airlines Servicing Washington, D.C.

See what other customers who have flown with United Airlines, Alaska Airlines and American Airlines from Seattle to Washington, D.C. have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

Alaska Airlines
8.0
Very good
1,375 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

Delta
8.0
Very good
2,369 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

United Airlines
7.6
Good
1,532 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

JetBlue
7.5
Good
607 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

American Airlines
7.3
Good
2,149 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Food

7.2

Comfort

8.0

Boarding

8.3

Crew

8.6

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Easy check-in with the app, easy boarding, and easy-going FAs, what’s not to like?

Related info for your journey

Useful info, stats and facts about Seattle to Washington, D.C. flights.

Top 6 airlines flying from Seattle to Washington, D.C.

The chart below displays the airlines Cheapflights users traveling from Seattle to Washington, D.C. choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
JetBlueCheapest$140Average$332FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
FrontierCheapest$165Average$252FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$178Average$510FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$179Average$527FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$179Average$473FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$206Average$622FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Seattle to Washington, D.C.

See what time of day planes typically take off from Seattle to Washington, D.C.
1%of flight departuresEarly morningMidnight to 6 am
69%of flight departuresMorning6 am to noon
25%of flight departuresAfternoonNoon to 6 pm
5%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Washington, D.C.

See how many times per day planes take to the skies headed from Seattle to Washington, D.C.
Sunday22daily flights
Monday23daily flights
Tuesday20daily flights
Wednesday21daily flights
Thursday20daily flights
Friday22daily flights
Saturday22daily flights
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