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

Frontier, Alaska Airlines, and Southwest can get you from Seattle to Washington, D.C. in just under 5h 13m. Your travel time can differ by up to 24h 51m. 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$ 1,070, our data indicates the cheapest price to be C$ 317. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), is priced around C$ 519.

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: United Airlines (95%), Austrian Airlines (93%), Brussels Airlines( 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 18 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$ 266+ 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 85 days in advance, depart on a Tuesday or Wednesday and return on a Monday

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 23 August 2026.

Wed 4/114:27 p.m. -

1 stop16h 42m

Tue 10/116:00 p.m. -

2 stops27h 54m

Deal found 19/8C$ 409

Thu 8/109:16 p.m. -

1 stop30h 04m

Sat 17/106:00 a.m. -

1 stop29h 58m

Deal found 19/8C$ 410

Thu 5/118:09 p.m. -

2 stops22h 41m

Tue 10/116:00 p.m. -

1 stop24h 12m

Deal found 19/8C$ 414

Tue 3/117:41 p.m. -

1 stop13h 28m

Mon 9/117:00 a.m. -

2 stops38h 54m

Deal found 19/8C$ 416

Wed 4/114:27 p.m. -

1 stop16h 42m

Mon 9/117:00 a.m. -

1 stop11h 12m

Deal found 19/8C$ 442

Sun 1/117:41 p.m. -

1 stop13h 28m

Mon 9/117:00 a.m. -

2 stops38h 54m

Deal found 19/8C$ 460

Mon 2/111:57 p.m. -

Nonstop5h 02m

Mon 9/117:00 a.m. -

1 stop11h 12m

Deal found 19/8C$ 486

Thu 8/109:16 p.m. -

1 stop30h 04m

Sat 17/107:02 a.m. -

Nonstop5h 42m

Deal found 19/8C$ 493

Wed 4/114:27 p.m. -

1 stop26h 23m

Tue 10/118:00 a.m. -

Nonstop5h 55m

Deal found 19/8C$ 494

Mon 2/114:27 p.m. -

1 stop26h 23m

Mon 9/117:00 a.m. -

1 stop11h 12m

Deal found 19/8C$ 509

Fri 30/109:36 p.m. -

Nonstop5h 04m

Sat 31/109:38 a.m. -

Nonstop5h 42m

Deal found 20/8C$ 512

Wed 28/101:49 p.m. -

Nonstop5h 10m

Tue 3/118:00 a.m. -

Nonstop5h 55m

Deal found 18/8C$ 519

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 23 August 2026.

Wed 30/91:46 p.m. -

Nonstop5h 13m

Sat 3/105:00 p.m. -

Nonstop5h 55m

Deal found 22/8C$ 519

Fri 25/911:14 p.m. -

Nonstop5h 03m

Mon 28/95:45 p.m. -

Nonstop5h 52m

Deal found 18/8C$ 519

Wed 14/102:50 p.m. -

Nonstop4h 59m

Sat 17/107:05 a.m. -

Nonstop5h 51m

Deal found 22/8C$ 519

Sat 6/26:40 a.m. -

2 stops9h 00m

Wed 10/23:55 p.m. -

1 stop9h 40m

Deal found 18/8C$ 553

Fri 23/109:36 p.m. -

Nonstop5h 04m

Tue 27/109:38 a.m. -

Nonstop5h 42m

Deal found 22/8C$ 519

Thu 24/96:05 p.m. -

1 stop8h 12m

Sun 27/95:45 p.m. -

Nonstop5h 52m

Deal found 20/8C$ 533

Wed 20/16:35 a.m. -

1 stop6h 55m

Wed 27/16:10 a.m. -

1 stop9h 50m

Deal found 22/8C$ 553

Thu 21/18:30 a.m. -

Nonstop4h 57m

Sun 24/15:30 p.m. -

Nonstop6h 03m

Deal found 21/8C$ 519

Fri 8/18:00 a.m. -

Nonstop4h 53m

Sun 10/15:15 p.m. -

1 stop8h 14m

Deal found 22/8C$ 533

Wed 2/129:15 a.m. -

2 stops11h 35m

Wed 9/126:10 a.m. -

1 stop9h 40m

Deal found 22/8C$ 553

Wed 14/101:49 p.m. -

Nonstop5h 10m

Tue 20/1010:59 a.m. -

1 stop12h 27m

Deal found 19/8C$ 533

Wed 11/118:30 a.m. -

1 stop8h 00m

Sat 14/118:20 a.m. -

1 stop8h 35m

Deal found 20/8C$ 546

Mon 2/115:15 a.m. -

2 stops9h 45m

Mon 9/118:00 a.m. -

2 stops14h 15m

Deal found 19/8C$ 560

Fri 4/128:00 a.m. -

1 stop9h 00m

Sun 6/128:00 a.m. -

Nonstop5h 55m

Deal found 20/8C$ 533

Thu 5/115:15 a.m. -

2 stops9h 45m

Tue 10/119:00 a.m. -

2 stops11h 50m

Deal found 19/8C$ 560

Fri 18/98:49 p.m. -

1 stop18h 25m

Thu 24/99:03 a.m. -

Nonstop5h 36m

Deal found 19/8C$ 533

Thu 1/103:56 p.m. -

Nonstop5h 03m

Mon 5/107:24 p.m. -

1 stop17h 04m

Deal found 22/8C$ 533

Sun 1/115:15 a.m. -

2 stops9h 45m

Mon 9/114:25 p.m. -

2 stops9h 35m

Deal found 19/8C$ 588

Fri 23/109:08 p.m. -

1 stop17h 42m

Sun 25/107:02 a.m. -

Nonstop5h 42m

Deal found 20/8C$ 533

Fri 8/16:35 a.m. -

2 stops8h 55m

Sun 10/19:40 a.m. -

2 stops10h 25m

Deal found 22/8C$ 588

Mon 2/111:57 p.m. -

Nonstop5h 02m

Mon 9/118:00 a.m. -

Nonstop5h 55m

Deal found 19/8C$ 574

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

Round-trip from	C$ 409
One-way from	C$ 266
Popular in	June
Cheapest in	January
Average price	C$ 545
Good round-trip deal	C$ 392 or less
Good one-way deal	C$ 705 or less

Frontier
4/11-10/11
3 total stops
44h 36m total
Seattle to Washington, D.C.

Search Deals

Alaska Airlines
3/10
1 total stop
10h 56m total
Seattle to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (C$ 118 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

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

Search Deals

Price to beat on a one-way 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

Wed 30/9

1:46 p.m.-9:59 p.m.

Nonstop5h 13m

Washington, D.C. Reagan-National

Sat 3/10

5:00 p.m.-7:55 p.m.

Nonstop5h 55m

C$ 519

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Fri 25/9

11:14 p.m.-7:17 a.m.

Nonstop5h 03m

Washington, D.C. Dulles Intl

Mon 28/9

5:45 p.m.-8:37 p.m.

Nonstop5h 52m

C$ 519

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Wed 14/10

2:50 p.m.-10:49 p.m.

Nonstop4h 59m

Washington, D.C. Dulles Intl

Sat 17/10

7:05 a.m.-9:56 a.m.

Nonstop5h 51m

C$ 519

Quickest round-trip

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Fri 23/10

9:36 p.m.-5:40 a.m.

Nonstop5h 04m

Washington, D.C. Dulles Intl

Tue 27/10

9:38 a.m.-12:20 p.m.

Nonstop5h 42m

C$ 519

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Thu 21/1

8:30 a.m.-4:27 p.m.

Nonstop4h 57m

Washington, D.C. Dulles Intl

Sun 24/1

5:30 p.m.-8:33 p.m.

Nonstop6h 03m

C$ 519

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Thu 24/9

6:05 p.m.-5:17 a.m.

1 stop8h 12m

Washington, D.C. Dulles Intl

Sun 27/9

5:45 p.m.-8:37 p.m.

Nonstop5h 52m

C$ 533

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Fri 8/1

8:00 a.m.-3:53 p.m.

Nonstop4h 53m

Washington, D.C. Dulles Intl

Sun 10/1

5:15 p.m.-10:29 p.m.

1 stop8h 14m

C$ 533

SeattleWashington, D.C.

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

SEADCA

Seattle/Tacoma Intl

Wed 14/10

1:49 p.m.-9:59 p.m.

Nonstop5h 10m

Washington, D.C. Reagan-National

Tue 20/10

10:59 a.m.-8:26 p.m.

1 stop12h 27m

C$ 533

SeattleWashington, D.C.

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

SEADCA

Seattle/Tacoma Intl

Fri 4/12

8:00 a.m.-8:00 p.m.

1 stop9h 00m

Washington, D.C. Reagan-National

Sun 6/12

8:00 a.m.-10:55 a.m.

Nonstop5h 55m

C$ 533

SeattleWashington, D.C.

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

SEAIAD

Seattle/Tacoma Intl

Fri 18/9

8:49 p.m.-6:14 p.m.

1 stop18h 25m

Washington, D.C. Dulles Intl

Thu 24/9

9:03 a.m.-11:39 a.m.

Nonstop5h 36m

C$ 533

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

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-IAD

SEA-DCA

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-IAD

SEA-DCA

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$ 453). Flying from Seattle to Washington, D.C. in June is currently the most expensive (average of C$ 723). 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 67% 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 Friday (25 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 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$ 429 and C$ 707 in November.
The cheapest round-trip price found within the last 5 days was C$ 409 on Frontier (4 Nov-10 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

12,834 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

12,834 reviews

Alaska Airlines

7.9

Good

12,834 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 18 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.?
Frontier, Alaska Airlines, and Southwest can get you from Seattle to Washington, D.C. in just under 5h 13m. Your travel time can differ by up to 24h 51m. 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: United Airlines (95%), Austrian Airlines (93%), Brussels Airlines( 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$ 1,070, our data indicates the cheapest price to be C$ 317. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), is priced around C$ 519.
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$ 453). Flying from Seattle to Washington, D.C. in June is currently the most expensive (average of C$ 723). 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

Flights by cabin class

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$ 274	AverageC$ 780	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$ 266

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. 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 23 August 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 23 August 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 23 August 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 23 August 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 23 August 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 23 August 2026.

Last-minute flights from Seattle to Washington, D.C.Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 23 August 2026 and is based on user searches.

Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 23 August 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 23 August 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 23 August 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

Good one-way 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 23 August 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 67% 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 Friday (25 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 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$ 429 and C$ 707 in November.The cheapest round-trip price found within the last 5 days was C$ 409 on Frontier (4 Nov-10 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 23 August 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 23 August 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 23 August 2026.

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

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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?

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

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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 23 August 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 23 August 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 23 August 2026.

Last-minute flights from Seattle to Washington, D.C.
Discover last-minute flight deals from Seattle to Washington, D.C.. Data last updated 23 August 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 23 August 2026.

Seattle to Washington, D.C. flights typically cost between C$ 429 and C$ 707 in November.
The cheapest round-trip price found within the last 5 days was C$ 409 on Frontier (4 Nov-10 Nov).