Cheap Flights from Seattle to District of Columbia from HK$1,205 Return

Flight deals from Seattle to District of Columbia

Looking for cheap tickets from Seattle to District of Columbia, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Washington D.C..HK$1,205 per passenger.Departing Wed, 24 Sep, returning Wed, 1 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Seattle / Tacoma International on Wed, 24 Sep, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Wed, 1 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From HK$1,205, select.

Flying from Seattle to District of Columbia

Arm yourself with these facts on the fly.

Cheapest flight found	HK$1,205, Washington D.C.
Cheapest month to fly	September
Average flight time	5 hrs, 5 mins
Cheapest airport to fly from	Seattle / Tacoma International
Most popular airline	Air Tahiti Nui

How to find cheap flights from Seattle to District of Columbia

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Seattle to District of Columbia. Other savvy travellers recently found return flights from HK$1,205 and one-way tickets from HK$594 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Seattle / Tacoma International into Washington D.C.

At the moment, the lowest priced flight tickets to District of Columbia are from Seattle / Tacoma International Airport to Baltimore Washington International Airport.

Fly in September

We crunched the flight calendar and found the cheapest time to fly from Seattle to District of Columbia is currently September.

Fly on a Wednesday

From our data, we can see that Wednesday seems to be the cheapest time to fly from Seattle to District of Columbia.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Seattle to anywhere you choose in District of Columbia.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Seattle to District of Columbia go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Seattle to District of Columbia flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Seattle to District of Columbia flight price?

We looked at all of the upcoming return flights from Seattle to District of Columbia we could find over the next 12 months. It looks like HK$1,205 is the best price. This is good, compared to the average District of Columbia ticket price of HK$2,066.

What is the cheapest month to fly from Seattle to District of Columbia?

The cheapest month to fly from Seattle to District of Columbia is currently September.

Which upcoming date is cheapest to fly from Seattle to District of Columbia on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to District of Columbia on Wednesday, 24 September 2025.

Are there any direct flights from Seattle to District of Columbia?

Seattle / Tacoma International Airport offers direct flights to District of Columbia.

If I'm flying from Seattle, where in District of Columbia is cheapest to fly into?

If you're flying from Seattle, the cheapest city in District of Columbia to fly into is Washington D.C.. The cheapest airport serving Washington D.C. at the moment is Baltimore Washington International.