$75 Cheap Flights from Seattle (SEA) to Washington (DCA)

View $75 flight on Sat, Oct 25, 2025Opens in a new window

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

Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Ronald Reagan Washington National Airport (DCA)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Seattle to Washington (SEA-DCA)

Prices were available within the past 7 days and start at $75 for one-way flights and $138 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Oct 25 - Mon, Nov 3
SEA
Seattle
DCA
Washington
$138 Roundtrip, found 17 hours ago
$138
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sat, Oct 25 from Seattle to Washington, returning Mon, Nov 3, priced at $138 found 17 hours ago
Frontier Airlines
Thu, Dec 11 - Tue, Dec 16
SEA
Seattle
DCA
Washington
$204 Roundtrip, found 1 hour ago
$204
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Seattle to Washington, returning Tue, Dec 16, priced at $204 found 1 hour ago
Frontier Airlines
Thu, Dec 4 - Wed, Dec 10
SEA
Seattle
DCA
Washington
$213 Roundtrip, found 1 hour ago
$213
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Seattle to Washington, returning Wed, Dec 10, priced at $213 found 1 hour ago
Frontier Airlines
Wed, Oct 22 - Sat, Nov 1
SEA
Seattle
DCA
Washington
$221 Roundtrip, found 15 hours ago
$221
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Oct 22 from Seattle to Washington, returning Sat, Nov 1, priced at $221 found 15 hours ago
Frontier Airlines
Thu, Dec 4 - Wed, Dec 10
SEA
Seattle
DCA
Washington
$223 Roundtrip, found 1 hour ago
$223
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Seattle to Washington, returning Wed, Dec 10, priced at $223 found 1 hour ago
United
Fri, Oct 31 - Mon, Nov 3
SEA
Seattle
DCA
Washington
$228 Roundtrip, just found
$228
Roundtrip
just found
Select United flight, departing Fri, Oct 31 from Seattle to Washington, returning Mon, Nov 3, priced at $228 just found
Frontier Airlines
Thu, Dec 11 - Tue, Jan 6
SEA
Seattle
DCA
Washington
$231 Roundtrip, found 1 day ago
$231
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Seattle to Washington, returning Tue, Jan 6, priced at $231 found 1 day ago
Alaska Airlines
Fri, Oct 31 - Mon, Nov 3
SEA
Seattle
DCA
Washington
$233 Roundtrip, just found
$233
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Oct 31 from Seattle to Washington, returning Mon, Nov 3, priced at $233 just found
Delta
Wed, Nov 12 - Mon, Nov 17
SEA
Seattle
DCA
Washington
$239 Roundtrip, just found
$239
Roundtrip
just found
Select Delta flight, departing Wed, Nov 12 from Seattle to Washington, returning Mon, Nov 17, priced at $239 just found
Hawaiian Airlines
Sun, Dec 14 - Tue, Jan 6
SEA
Seattle
DCA
Washington
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sun, Dec 14 from Seattle to Washington, returning Tue, Jan 6, priced at $249 found 1 day ago

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

November is typically the cheapest month to fly

From $138 - $505 per traveler.

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 $239
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city center40 min
Flights from $239

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) cost?
Lock in a cheap one-way flight from $75 or cheap return flight from $138 from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
Flying in October may help you find better deals, as it's the cheapest month for flights between SEA and DCA. You'll typically find the lowest fares during the off-season.
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 Seattle - Tacoma Intl. Airport (SEA) to Ronald Reagan Washington National Airport (DCA)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SEA to DCA. Then, sort your results by "Price (lowest to highest)" to score a great deal.
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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Ronald Reagan Washington National
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$138
Distance
2322 mi
Average flight time
10 hours 5 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 October. 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 $75 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

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*Available to One Key members.