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Cheap Flights from Seattle to Washington D.C.

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Compare Seattle to Washington D.C. flight deals

Find the cheapest month or even day of the year to fly to Washington D.C.

Book the best Washington D.C. fare with no extra fees

Flight deals from Seattle to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from Seattle to Washington D.C.? Find the lowest prices on one-way and return tickets right here.
Washington D.C..R$ 556 per passenger.Departing Mon, 12 May.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Mon, 12 May, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 556, select.
Washington D.C..R$ 558 per passenger.Departing Tue, 3 Jun.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Tue, 3 Jun, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 558, select.
Washington D.C..R$ 559 per passenger.Departing Wed, 16 Apr.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Wed, 16 Apr, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 559, select.
Washington D.C..R$ 589 per passenger.Departing Fri, 18 Jul.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 18 Jul, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 589, select.
Washington D.C..R$ 592 per passenger.Departing Tue, 12 Aug.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Tue, 12 Aug, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 592, select.
Washington D.C..R$ 592 per passenger.Departing Fri, 2 Jan.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 2 Jan, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 592, select.
Washington D.C..R$ 737 per passenger.Departing Fri, 17 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 17 Oct, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 737, select.
Washington D.C..R$ 741 per passenger.Departing Thu, 25 Sep.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 25 Sep, arriving in Baltimore Washington International.Price includes taxes and charges.From R$ 741, select.

Find the cheapest month to fly from Seattle to Washington D.C.

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Washington D.C. flights are currently cheapest in May.
Mar
from R$ 1.007
Apr
from R$ 559
May
from R$ 556
Jun
from R$ 558
Jul
from R$ 589
Aug
from R$ 592
Sep
from R$ 741
Oct
from R$ 737
Nov
from R$ 741
Dec
from R$ 909
Jan
from R$ 592
Feb
Find prices

Direct flights from Seattle to Washington D.C.

Alternative Seattle to Washington D.C. routes

Looking for the cheapest, fastest or easiest route from Seattle to Washington D.C.? You could fly into the following airports instead.

Seattle to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR$ 556
Cheapest month to flyMay
Average flight time5 hrs, 5 mins
Most popular airlineAir Tahiti Nui
Average flights per week316

Finding cheap flights from Seattle to Washington D.C.: Frequently asked questions

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.
The best price we found for a return flight from Seattle to Washington D.C. is R$ 1.174. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 4 minutes is the average flight time from Seattle to Washington D.C..
Air Tahiti Nui, Alaska Airlines and Qatar Airways fly direct from Seattle to Washington D.C..
As of March 2025, there are 316 flights per week flying from Seattle to Washington D.C..
The cheapest month to fly from Seattle to Washington D.C. is usually March 2025.
If you're flying from Seattle, the cheapest airport near Washington D.C. is Baltimore Washington International – which is 43.6 km away from the centre of Washington D.C.. We've found flights into this airport from R$ 1.174.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Washington D.C. on Monday, 3 November 2025.
Yes – the average flight time is 5 hours and 4 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington D.C. but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.
The cheapest airline that flies to Washington D.C. is Delta .

How to find cheap flights to Washington D.C. from Seattle

Looking for cheap tickets from Seattle to Washington D.C.? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Seattle to Washington D.C.. And with us there are no hidden fees - what you see is what you pay.
  • Compare flight deals to Washington D.C. from Seattle from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
  • Flex your dates to find the best Seattle-Washington D.C. ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Washington D.C. from Seattle.
  • Set up a Price Alert. You can easily track the fare of your cheap Seattle-Washington D.C. flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Seattle and Washington D.C.? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business class flights from Seattle and Washington D.C.. We scour the internet for the best Business, Premium Economy and First Class flight fares to Washington D.C., too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Seattle to Washington D.C. flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

    • Combine your flight to Washington D.C. from Seattle with hotels and car hire

    Once you've secured your cheap flight ticket from Seattle to Washington D.C., discover the best prices and exclusive rates for hotels in Washington D.C. or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


Plan the rest of your trip from Seattle to Washington D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.