$105 Cheap Flights from Seattle (SEA) to Washington (DCA)

View $105 flight on Sat, Jul 19, 2025Opens 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 $105 for one-way flights and $226 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Wed, Nov 5 - Mon, Nov 10
SEA
Seattle
DCA
Washington
$226 Roundtrip, found 2 days ago
$226
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Nov 5 from Seattle to Washington, returning Mon, Nov 10, priced at $226 found 2 days ago
American Airlines
Fri, Nov 14 - Mon, Nov 17
SEA
Seattle
DCA
Washington
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Nov 14 from Seattle to Washington, returning Mon, Nov 17, priced at $227 found 2 days ago
Bargain Flight
Wed, Oct 1 - Sat, Oct 11
SEA
Seattle
DCA
Washington
$274 Roundtrip, found 5 hours ago
$274
Roundtrip
found 5 hours ago
Select Bargain Flight flight, departing Wed, Oct 1 from Seattle to Washington, returning Sat, Oct 11, priced at $274 found 5 hours ago
Frontier Airlines
Wed, Aug 20 - Wed, Sep 3
SEA
Seattle
DCA
Washington
$276 Roundtrip, found 14 hours ago
$276
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Aug 20 from Seattle to Washington, returning Wed, Sep 3, priced at $276 found 14 hours ago
Alaska Airlines
Sat, Aug 30 - Sat, Sep 6
SEA
Seattle
DCA
Washington
$277 Roundtrip, found 2 hours ago
$277
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Seattle to Washington, returning Sat, Sep 6, priced at $277 found 2 hours ago
Delta
Wed, Oct 8 - Sat, Oct 18
SEA
Seattle
DCA
Washington
$277 Roundtrip, found 5 hours ago
$277
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, Oct 8 from Seattle to Washington, returning Sat, Oct 18, priced at $277 found 5 hours ago
Bargain Flight
Tue, Aug 5 - Wed, Aug 13
SEA
Seattle
DCA
Washington
$283 Roundtrip, found 9 hours ago
$283
Roundtrip
found 9 hours ago
Select Bargain Flight flight, departing Tue, Aug 5 from Seattle to Washington, returning Wed, Aug 13, priced at $283 found 9 hours ago
Frontier Airlines
Sat, Jul 19 - Mon, Jul 21
SEA
Seattle
DCA
Washington
$284 Roundtrip, just found
$284
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jul 19 from Seattle to Washington, returning Mon, Jul 21, priced at $284 just found
Hawaiian Airlines
Fri, Aug 1 - Tue, Aug 12
SEA
Seattle
DCA
Washington
$287 Roundtrip, found 2 days ago
$287
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Fri, Aug 1 from Seattle to Washington, returning Tue, Aug 12, priced at $287 found 2 days ago
Frontier Airlines
Wed, Oct 1 - Tue, Oct 7
SEA
Seattle
DCA
Washington
$288 Roundtrip, found 12 hours ago
$288
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Wed, Oct 1 from Seattle to Washington, returning Tue, Oct 7, priced at $288 found 12 hours ago

Find the cheapest month to fly from Seattle (SEA) to Washington (DCA)

September is typically the cheapest month to fly

From $138 - $258 per traveler.

Graph displaying average flight prices per month

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. Cheapest option available. Average driving time to city center is 40 minutes. Flights from $454
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city center40 min
Flights from $454
Flights from Seattle (SEA) to Washington (DCA)
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
$226
Distance
2322 mi
Average flight time
8 hours 6 mins

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 November. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $105 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) cost?
Cheap return flights from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) start from $271. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on July 30 2025 and touching down at DCA. The price was last updated on July 8 2025 and has not changed since.
What is the cheapest month to fly from SEA to DCA?
The cheapest flights from SEA to DCA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
When departing from Seattle - Tacoma Intl. Airport (SEA), you can board a direct flight to Ronald Reagan Washington National Airport (DCA) with Alaska Airlines.
What is the cheapest airline that flies from SEA to DCA?
Currently, the cheapest carrier offering one-way flights from SEA to DCA is Delta. You can jet off on this route from $149. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on August 14 2025. Prices were last updated on July 8 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
With, on average, 2 direct flights departing from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) each day, you'll be cruising above the clouds before you know it.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
Flights between SEA and DCA are their busiest at 8 AM. If you're after a quieter trip and potentially cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from SEA to DCA?
Friday has the most flights from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA). Consider traveling on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
Seattle - Tacoma Intl. Airport (SEA)'s earliest flight to Ronald Reagan Washington National Airport (DCA) is at approximately 8:24AM UTC-8. With a travel time of 5h 5m, you'll touch down at around 4:29PM UTC-5.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
The average flight time from SEA to DCA is 4 hours and 59 minutes, covering a total distance of 2,300 mi.
What airline has the least delays from SEA to DCA?
With 86% of journeys generally landing on time, Alaska Airlines has the best on-time performance for direct flights from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA). To monitor your flight status and get notifications about any changes, use the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
To reach Ronald Reagan Washington National Airport (DCA) on schedule, book a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Washington from Seattle - Tacoma Intl. Airport (SEA)?
Take a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Washington and arrive at one of these airports:

  • Ronald Reagan Washington National Airport (DCA)
  • Washington Dulles Intl. Airport (IAD)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) last-minute?
Waiting until right before your break to book your flight from SEA to DCA generally means paying more. While you may come across some last-minute offers, they're not always guaranteed. Keep your travel schedule open to boost your chances of landing a bargain.
Is it cheaper to book a SEA to DCA flight and hotel package?
You can save money by booking a SEA to DCA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your preferred accommodations and flights, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
If you booked your SEA to DCA flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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