How long is the flight from Seattle to Washington, D.C.?

Delta and Southwest can get you from Seattle to Washington, D.C. in just under 5h 03m. Your travel time can differ by up to 7h 37m. The distance between Seattle and Washington, D.C. is about 3735 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

What are the cheapest flights from Seattle to Washington, D.C.?

Looking for the cheapest flight from Seattle to Washington, D.C.? While on average our users pay C$ 1,294, our data indicates the cheapest price to be C$ 415. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), is priced around C$ 387.

What are the most reliable airlines from Seattle to Washington, D.C.?

Before booking your flight to Washington, D.C. from Seattle, check out the most reliable airlines to get you to your destination on time: Virgin Atlantic (100%), Qatar Airways (94%), Avianca( 93%).

What airport do you fly from for flights from Seattle to Washington, D.C.?

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Seattle/Tacoma Intl; the airport handles an average of 19 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to Washington, D.C.. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Seattle to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seattle to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Washington, D.C..

Can I find deals for business class flights from Seattle to Washington, D.C.?

Yes. Cheapflights offers flight deals from Seattle to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 236+ Cheap Flights from Seattle to Washington, D.C.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Washington, D.C. are usually found in January or September, booked 34 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap flight deals from Seattle to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Seattle to Washington, D.C.
Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Tue 17/115:35 a.m. -

1 stop8h 12m

Sun 22/114:25 p.m. -

Nonstop6h 02m

Deal found 16/9C$ 401

Thu 15/102:50 p.m. -

Nonstop4h 59m

Thu 22/106:00 a.m. -

1 stop11h 19m

Deal found 16/9C$ 401

Fri 23/1011:50 p.m. -

1 stop8h 10m

Sat 24/103:00 p.m. -

1 stop8h 50m

Deal found 17/9C$ 407

Wed 11/1111:15 p.m. -

1 stop6h 25m

Sun 15/116:05 a.m. -

1 stop9h 24m

Deal found 17/9C$ 415

Tue 13/1011:10 p.m. -

1 stop8h 02m

Tue 20/1012:01 p.m. -

1 stop7h 57m

Deal found 16/9C$ 415

Wed 18/116:10 a.m. -

2 stops9h 45m

Sat 5/129:25 a.m. -

1 stop10h 20m

Deal found 17/9C$ 422

Sat 17/103:56 p.m. -

Nonstop5h 03m

Mon 26/107:24 p.m. -

1 stop17h 04m

Deal found 16/9C$ 422

Sat 24/1012:10 a.m. -

1 stop9h 05m

Thu 29/106:00 p.m. -

1 stop9h 40m

Deal found 15/9C$ 429

Sat 10/103:56 p.m. -

Nonstop5h 03m

Tue 13/107:24 p.m. -

1 stop17h 04m

Deal found 16/9C$ 429

Mon 19/1012:10 a.m. -

1 stop11h 10m

Wed 28/1011:40 a.m. -

2 stops10h 25m

Deal found 17/9C$ 431

Fri 23/109:36 p.m. -

Nonstop5h 04m

Fri 6/115:17 p.m. -

Nonstop5h 56m

Deal found 15/9C$ 436

Tue 27/1012:10 a.m. -

2 stops9h 40m

Wed 28/106:35 p.m. -

2 stops15h 50m

Deal found 17/9C$ 438

Best flights from Seattle to Washington, D.C.
Discover carefully curated flight deals from Seattle to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Tue 13/107:20 a.m. -

Nonstop5h 03m

Tue 20/106:26 p.m. -

1 stop8h 26m

Deal found 16/9C$ 401

Fri 13/1112:15 a.m. -

1 stop12h 40m

Tue 17/112:40 p.m. -

2 stops11h 10m

Deal found 16/9C$ 431

Thu 5/118:48 p.m. -

1 stop17h 52m

Tue 10/117:46 a.m. -

Nonstop5h 50m

Deal found 16/9C$ 538

Tue 20/1011:14 p.m. -

Nonstop5h 03m

Sat 24/1012:40 p.m. -

1 stop7h 57m

Deal found 15/9C$ 569

Tue 13/107:20 a.m. -

Nonstop5h 03m

Thu 22/104:00 p.m. -

1 stop9h 03m

Deal found 16/9C$ 401

Fri 23/102:50 p.m. -

Nonstop4h 59m

Tue 3/116:13 a.m. -

1 stop9h 39m

Deal found 16/9C$ 401

Fri 4/126:30 a.m. -

1 stop6h 45m

Sun 6/122:40 p.m. -

2 stops11h 20m

Deal found 16/9C$ 464

Thu 15/102:50 p.m. -

Nonstop4h 59m

Thu 22/106:00 a.m. -

1 stop11h 19m

Deal found 16/9C$ 401

Wed 11/1110:45 p.m. -

1 stop9h 52m

Sun 15/117:00 a.m. -

Nonstop6h 05m

Deal found 17/9C$ 401

Mon 26/106:50 p.m. -

2 stops10h 40m

Thu 29/105:05 p.m. -

2 stops10h 35m

Deal found 17/9C$ 487

Thu 5/1112:20 p.m. -

2 stops13h 59m

Wed 11/116:39 a.m. -

1 stop12h 33m

Deal found 16/9C$ 576

Thu 5/1110:59 p.m. -

1 stop9h 51m

Wed 11/115:00 p.m. -

1 stop9h 57m

Deal found 16/9C$ 415

Fri 6/112:30 p.m. -

1 stop7h 00m

Sun 8/1110:15 a.m. -

1 stop8h 17m

Deal found 19/9C$ 583

Tue 13/108:49 a.m. -

1 stop9h 11m

Tue 20/108:00 a.m. -

Nonstop5h 59m

Deal found 20/9C$ 667

Tue 13/1010:59 p.m. -

1 stop9h 51m

Tue 20/105:13 p.m. -

1 stop7h 52m

Deal found 15/9C$ 415

Thu 15/108:40 p.m. -

2 stops11h 55m

Tue 20/103:05 p.m. -

2 stops10h 35m

Deal found 15/9C$ 593

Fri 6/111:30 p.m. -

1 stop7h 05m

Tue 10/117:25 a.m. -

1 stop8h 04m

Deal found 16/9C$ 415

Mon 21/128:00 a.m. -

Nonstop5h 06m

Sat 2/18:00 a.m. -

Nonstop6h 19m

Deal found 20/9C$ 765

Mon 26/102:50 p.m. -

Nonstop4h 59m

Fri 6/1112:20 p.m. -

1 stop9h 15m

Deal found 15/9C$ 485

Mon 2/1111:58 a.m. -

Nonstop5h 08m

Thu 5/117:05 a.m. -

Nonstop5h 51m

Deal found 15/9C$ 569

Mon 2/117:20 a.m. -

Nonstop5h 03m

Thu 5/114:45 p.m. -

Nonstop5h 50m

Deal found 15/9C$ 639

Sat 21/117:20 a.m. -

Nonstop4h 53m

Fri 27/114:25 p.m. -

Nonstop6h 02m

Deal found 17/9C$ 647

Mon 21/127:55 a.m. -

Nonstop4h 45m

Sat 2/14:50 p.m. -

Nonstop6h 22m

Deal found 17/9C$ 674

Find flight deals from Seattle to Washington, D.C.

Round-trip from	C$ 401
One-way from	C$ 236
Popular in	June
Cheapest in	January
Average price	C$ 523
Good round-trip deal	C$ 429 or less

Delta
17/11-22/11
1 total stop
14h 14m total
Seattle to Washington, D.C.

Search Deals

Delta
17/10-31/12
Nonstop
5h 03m total
Seattle to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (C$ 114 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Seattle/Tacoma Intl to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Fri 8/1

8:25 a.m.-6:16 p.m.

1 stop6h 51m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 250

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Sun 13/12

1:45 p.m.-11:47 p.m.

1 stop7h 02m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 250

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Sun 15/11

11:15 p.m.-8:40 a.m.

1 stop6h 25m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 250

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 18/11

6:00 a.m.-4:33 p.m.

1 stop7h 33m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 250

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - IAD Washington, D.C. Dulles Intl

SEAIAD

Seattle/Tacoma Intl

Tue 15/12

6:00 a.m.-6:26 p.m.

1 stop9h 26m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 250

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - IAD Washington, D.C. Dulles Intl

SEAIAD

Seattle/Tacoma Intl

Tue 22/12

11:44 p.m.-10:02 a.m.

1 stop7h 18m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 271

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Thu 17/12

5:15 a.m.-6:00 p.m.

2 stops9h 45m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 292

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 16/12

9:15 a.m.-11:50 p.m.

2 stops11h 35m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 292

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 30/12

8:30 p.m.-10:15 a.m.

2 stops10h 45m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 292

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - IAD Washington, D.C. Dulles Intl

SEAIAD

Seattle/Tacoma Intl

Tue 1/12

8:09 p.m.-5:39 p.m.

1 stop18h 30m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 299

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/9

Showing 1-10 of 44 resultsSorted by cheapest first

...

Best time to book a flight from Seattle to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Seattle with our price prediction graph.

SEA-WAS

SEA-DCA

SEA-IAD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Washington, D.C.

SEA-WAS

SEA-DCA

SEA-IAD

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of C$ 478). Flying from Seattle to Washington, D.C. in June is currently the most expensive (average of C$ 734). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to WAS?

Unlike in the morning, when flights are generally more expensive, you can save up to 50% on flights from Seattle to Washington, D.C. by exploring options for tickets in the afternoon.

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

The most flights from SEA to WAS are scheduled on a Saturday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Seattle to Washington, D.C.?

Airfare is below average for this route at the moment.

Seattle to Washington, D.C. flights typically cost between C$ 475 and C$ 738 in November.
The cheapest round-trip price found within the last 5 days was C$ 401 on Delta (17 Nov-22 Nov).

How far ahead should I book a flight from Seattle to Washington, D.C.?

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

7.9

Good

12,953 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Alaska Airlines

7.9

Good

12,953 reviews

Alaska Airlines

7.9

Good

12,953 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

What airport do you fly from for flights from Seattle to Washington, D.C.?
Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Seattle/Tacoma Intl; the airport handles an average of 19 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to Washington, D.C.. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.
How long is the flight from Seattle to Washington, D.C.?
Delta and Southwest can get you from Seattle to Washington, D.C. in just under 5h 03m. Your travel time can differ by up to 7h 37m. The distance between Seattle and Washington, D.C. is about 3735 km. This flight may include one or multiple stops.
What are the most reliable airlines from Seattle to Washington, D.C.?
Before booking your flight to Washington, D.C. from Seattle, check out the most reliable airlines to get you to your destination on time: Virgin Atlantic (100%), Qatar Airways (94%), Avianca( 93%).
What are the cheapest flights from Seattle to Washington, D.C.?
Looking for the cheapest flight from Seattle to Washington, D.C.? While on average our users pay C$ 1,294, our data indicates the cheapest price to be C$ 415. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), is priced around C$ 387.
Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Seattle to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Washington, D.C..
Can I find deals for business class flights from Seattle to Washington, D.C.?
Yes. Cheapflights offers flight deals from Seattle to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to Washington, D.C.?
Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of C$ 478). Flying from Seattle to Washington, D.C. in June is currently the most expensive (average of C$ 734). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Silver Spring

Alexandria

Hanover

Oxon Hill

Gaithersburg

Reston

Herndon

Ellicott City

Arlington

Fredericksburg

Rockville

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Alternative routes

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Direct flights to United States

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Other flight options

Other flights from Seattle

Popular flights

Washington, D.C. flight routes

Alternative routes for Seattle to Washington, D.C.

Seattle to Dulles Intl flights

Seattle to Reagan-National flights

Top airline flying from Seattle to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	CheapestC$ 278	AverageC$ 793	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Washington, D.C.?

When you search for this flight from Seattle to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Washington, D.C.?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Washington, D.C. for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Washington, D.C. with no change fees?

Yes, we can. To see specific flights from Seattle to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Washington, D.C. become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Seattle to Washington, D.C. from C$ 236

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Washington, D.C.

Cheapest flights from Seattle to Washington, D.C.Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Seattle to Washington, D.C.Discover carefully curated flight deals from Seattle to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Discover carefully curated flight deals from Seattle to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Direct flights from Seattle to Washington, D.C.Explore direct flight options from Seattle to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Explore direct flight options from Seattle to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Last-minute flights from Seattle to Washington, D.C.Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 20 September 2026 and is based on user searches.

Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Seattle to Washington, D.C.Search for one-way flight options from Seattle to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Search for one-way flight options from Seattle to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Find flight deals from Seattle to Washington, D.C.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Washington, D.C. that are best for you.

Best time to book a flight from Seattle to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Seattle with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

What is the cheapest time of day to fly from SEA to WAS?

Find hourly flight availability from Seattle to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 September 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 50% on flights from Seattle to Washington, D.C. by exploring options for tickets in the afternoon.

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

The most flights from SEA to WAS are scheduled on a Saturday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Seattle to Washington, D.C.?

Airfare is below average for this route at the moment.

Seattle to Washington, D.C. flights typically cost between C$ 475 and C$ 738 in November.The cheapest round-trip price found within the last 5 days was C$ 401 on Delta (17 Nov-22 Nov).

How far ahead should I book a flight from Seattle to Washington, D.C.?

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Seattle to Washington, D.C.?

How long is the flight from Seattle to Washington, D.C.?

What are the most reliable airlines from Seattle to Washington, D.C.?

What are the cheapest flights from Seattle to Washington, D.C.?

Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?

How can I find direct flights from Seattle to Washington, D.C.?

Can I find deals for business class flights from Seattle to Washington, D.C.?

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

Travelling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to United States

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Search flights from Seattle to Washington, D.C. by cabin class

Find flights from Seattle to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Washington, D.C. flights

Browse other Seattle and Washington, D.C. flight options. Last updated on 20 September 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Popular flight searches

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Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Top airline flying from Seattle to Washington, D.C.

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Washington, D.C.?

Can Cheapflights find flights from Seattle to Washington, D.C. with no change fees?

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Cheapest flights from Seattle to Washington, D.C.
Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Seattle to Washington, D.C.
Discover carefully curated flight deals from Seattle to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Direct flights from Seattle to Washington, D.C.
Explore direct flight options from Seattle to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Last-minute flights from Seattle to Washington, D.C.
Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Seattle to Washington, D.C.
Search for one-way flight options from Seattle to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Seattle to Washington, D.C. flights typically cost between C$ 475 and C$ 738 in November.
The cheapest round-trip price found within the last 5 days was C$ 401 on Delta (17 Nov-22 Nov).