$111 Cheap Flights from Seattle (SEA) to Washington (DCA)

View $111 flight on Wed, Jul 22, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA)

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Cheap Flights from Seattle to Washington (SEA-DCA)

Prices were available within the past 7 days and start at $111 for one-way flights and $224 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Aug 5 - Sat, Aug 15
SEA
Seattle
DCA
Washington
$224 Roundtrip, found 2 hours ago
$224
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, Aug 5 from Seattle to Washington, returning Sat, Aug 15, priced at $224 found 2 hours ago
Frontier Airlines
Wed, Jun 24 - Sat, Jul 4
SEA
Seattle
DCA
Washington
$230 Roundtrip, just found
$230
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jun 24 from Seattle to Washington, returning Sat, Jul 4, priced at $230 just found
Frontier Airlines
Tue, Jun 9 - Sun, Jun 14
SEA
Seattle
DCA
Washington
$240 Roundtrip, found 7 hours ago
$240
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Tue, Jun 9 from Seattle to Washington, returning Sun, Jun 14, priced at $240 found 7 hours ago
Frontier Airlines
Wed, Jul 22 - Sat, Aug 1
SEA
Seattle
DCA
Washington
$243 Roundtrip, just found
$243
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jul 22 from Seattle to Washington, returning Sat, Aug 1, priced at $243 just found
Frontier Airlines
Thu, Jun 4 - Sun, Jun 14
SEA
Seattle
DCA
Washington
$244 Roundtrip, just found
$244
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jun 4 from Seattle to Washington, returning Sun, Jun 14, priced at $244 just found
Frontier Airlines
Wed, Jul 22 - Sat, Aug 1
SEA
Seattle
DCA
Washington
$248 Roundtrip, just found
$248
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jul 22 from Seattle to Washington, returning Sat, Aug 1, priced at $248 just found
Southwest Airlines
Mon, Aug 3 - Mon, Aug 10
SEA
Seattle
DCA
Washington
$252 Roundtrip, found 6 hours ago
$252
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Mon, Aug 3 from Seattle to Washington, returning Mon, Aug 10, priced at $252 found 6 hours ago
American Airlines
Thu, May 28 - Sat, May 30
SEA
Seattle
DCA
Washington
$265 Roundtrip, found 1 hour ago
$265
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, May 28 from Seattle to Washington, returning Sat, May 30, priced at $265 found 1 hour ago
United
Wed, Sep 23 - Sat, Sep 26
SEA
Seattle
DCA
Washington
$265 Roundtrip, found 2 hours ago
$265
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Sep 23 from Seattle to Washington, returning Sat, Sep 26, priced at $265 found 2 hours ago
Delta
Wed, Jul 29 - Tue, Aug 4
SEA
Seattle
DCA
Washington
$295 Roundtrip, found 1 day ago
$295
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jul 29 from Seattle to Washington, returning Tue, Aug 4, priced at $295 found 1 day ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Baltimore Washington Intl. Thurgood Marshall BWI. Average driving time to city center is 40 minutes. Flights from $318
BWI
Baltimore Washington Intl. Thurgood Marshall
Average driving time to city center40 min
Flights from $318
Select flight to Washington Dulles Intl. IAD. Average driving time to city center is 36 minutes. Flights from $557
IAD
Washington Dulles Intl.
Average driving time to city center36 min
Flights from $557

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) cost?
You can find cheap one-way flights and cheap return flights from $224 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) with Expedia. One-way flights typically cost between $165 and $1062, and return flights often range between $338 and $1998. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
January is the cheapest month to fly from Seattle to Washington, DC, with average return fares around $298. This is about 30% lower than the average price throughout the year, as travel demand typically decreases after the holiday season. Other economical months to consider are February and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
Delta operates around 9 direct flights from SEA to DCA every week.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
Delta is one of the cheapest airlines offering nonstop flights from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA), with round-trip tickets starting from around $218. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The best airline to fly with from Seattle, WA (SEA) to Washington, DC (DCA) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Delta typically offers the lowest fares. American Airlines offers the most daily flights from Seattle to Washington, DC, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
For your journey from Seattle, WA (SEA) to Washington, DC (DCA), January and September are the best months to fly. January features return flights at around $298, making it a budget-friendly option, while September also offers favorable travel conditions. This information is derived from booking data over the past year.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
On average, there are around 1 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA). For more options, look at flights that include layovers.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The earliest flight from Seattle - Tacoma International (SEA) to Ronald Reagan Washington National (DCA) typically departs at around 12:05 AM, operated by American Airlines. This seasonal service is available in February and March, making it a great option for early travelers heading to Washington, DC. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
The most popular departure times for flights from Seattle (SEA) to Washington, DC (DCA) are in the early morning, from 6am to 9am. About 38% of passengers prefer this time window. Many major carriers, including American Airlines, Delta, and United Airlines, offer flights during this window. This timing is popular because it allows you to arrive in DC with a full day ahead of you.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
A nonstop flight from SEA to DCA typically takes around 5 hours, covering approximately 2,323 miles. Connecting flights on this route usually add 4 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
First class is available on flights from SEA to DCA. First class cabins are available on:

  • United Airlines
  • American Airlines
  • Delta Air Lines

How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
A direct, return business class ticket from Seattle, WA (SEA) to Washington, DC (DCA) typically costs between $2,173 - $4,292. A non-stop, one-way business class flight is usually around $1,068 - $1,448. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly into Washington Dulles Intl. (IAD) and Ronald Reagan Washington National (DCA) in Washington. Some flights may connect through major hubs like Los Angeles Intl. (LAX), San Francisco Intl. (SFO), Denver Intl. (DEN) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) Washington Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Ronald Reagan Washington National
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$224
Distance
2322 mi
Average flight time
8 hours 18 mins

Book with confidence

Seattle to Washington Flights

The cheapest times to fly from Seattle to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Washington are during the month of August. You can find some of the cheapest flights from Seattle to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Washington

Sunday is one of the best days to book for cheap flights from Seattle to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $111 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Washington Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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