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

View AU$199 flight on Tue, 25 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 25 Aug - Tue, 1 Sept
SEA
Seattle
DCA
Washington
AU$397 Return, found 4 days ago
AU$397
Return
found 4 days ago
Select American Airlines flight, departing Tue, 25 Aug from Seattle to Washington, returning Tue, 1 Sept, priced at AU$397 found 4 days ago
American Airlines
Fri, 28 Aug - Mon, 31 Aug
SEA
Seattle
DCA
Washington
AU$425 Return, found 2 days ago
AU$425
Return
found 2 days ago
Select American Airlines flight, departing Fri, 28 Aug from Seattle to Washington, returning Mon, 31 Aug, priced at AU$425 found 2 days ago
American Airlines
Wed, 26 Aug - Wed, 2 Sept
SEA
Seattle
DCA
Washington
AU$426 Return, found 3 days ago
AU$426
Return
found 3 days ago
Select American Airlines flight, departing Wed, 26 Aug from Seattle to Washington, returning Wed, 2 Sept, priced at AU$426 found 3 days ago
Delta
Fri, 28 Aug - Mon, 31 Aug
SEA
Seattle
DCA
Washington
AU$440 Return, found 2 days ago
AU$440
Return
found 2 days ago
Select Delta flight, departing Fri, 28 Aug from Seattle to Washington, returning Mon, 31 Aug, priced at AU$440 found 2 days ago
Delta
Sat, 29 Aug - Sat, 5 Sept
SEA
Seattle
DCA
Washington
AU$441 Return, found 15 hours ago
AU$441
Return
found 15 hours ago
Select Delta flight, departing Sat, 29 Aug from Seattle to Washington, returning Sat, 5 Sept, priced at AU$441 found 15 hours ago
American Airlines
Tue, 25 Aug - Tue, 1 Sept
SEA
Seattle
DCA
Washington
AU$454 Return, found 4 days ago
AU$454
Return
found 4 days ago
Select American Airlines flight, departing Tue, 25 Aug from Seattle to Washington, returning Tue, 1 Sept, priced at AU$454 found 4 days ago
American Airlines
Sun, 23 Aug - Sun, 30 Aug
SEA
Seattle
DCA
Washington
AU$455 Return, found 5 days ago
AU$455
Return
found 5 days ago
Select American Airlines flight, departing Sun, 23 Aug from Seattle to Washington, returning Sun, 30 Aug, priced at AU$455 found 5 days ago
Delta
Fri, 28 Aug - Mon, 31 Aug
SEA
Seattle
DCA
Washington
AU$462 Return, found 2 days ago
AU$462
Return
found 2 days ago
Select Delta flight, departing Fri, 28 Aug from Seattle to Washington, returning Mon, 31 Aug, priced at AU$462 found 2 days ago
Alaska Airlines
Sat, 29 Aug - Sat, 5 Sept
SEA
Seattle
DCA
Washington
AU$478 Return, found 15 hours ago
AU$478
Return
found 15 hours ago
Select Alaska Airlines flight, departing Sat, 29 Aug from Seattle to Washington, returning Sat, 5 Sept, priced at AU$478 found 15 hours ago
United
Fri, 28 Aug - Mon, 31 Aug
SEA
Seattle
DCA
Washington
AU$519 Return, found 2 days ago
AU$519
Return
found 2 days ago
Select United flight, departing Fri, 28 Aug from Seattle to Washington, returning Mon, 31 Aug, priced at AU$519 found 2 days 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. Cheapest option available. Average driving time to city centre is 40 minutes. Flights from AU$861
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city centre40 min
Flights from AU$861
Select flight to Washington Dulles Intl. IAD. Average driving time to city centre is 36 minutes. Flights from AU$969
IAD
Washington Dulles Intl.
Average driving time to city centre36 min
Flights from AU$969

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

January is typically the cheapest month to fly

From AU$218 - AU$487 per traveller.

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 one-way and return flights from SEA to DCA with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to DCA ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
January is typically the cheapest month to fly from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA), with average return fares around AU$445. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA) include February and September.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
Only one airline offers direct flights from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA). Delta operates 7 direct flights from Seattle - Tacoma Intl. to Ronald Reagan Washington National 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 return flights from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA), with tickets starting from around AU$304 for flights that can be booked for departure within the next year. JetBlue Airways offers one of the cheapest connecting return flights with a layover in John F. Kennedy Intl. (JFK), starting from around AU$467. These prices are per adult, for economy/coach class. 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.
How do I find cheap flights from Seattle, WA (SEA) to Washington, DC (DCA)?
To find a cheap flight from Seattle, WA (SEA) to Washington, DC (DCA), 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-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National) 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, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National), 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)?
The cheapest months to fly from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA) are typically January and September, with average return flights around AU$445. November is a popular month for this route, meaning you'll find plenty of flight options, though prices might be a bit higher. If you're looking for the best value, aiming for January or September could save you money, while November offers more flexibility in flight times.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
There is 1 nonstop flight per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National). For even more choices, look at flights that include layovers, as there are around 69 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), and Hartsfield-Jackson Atlanta Intl. (ATL).
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 Intl. (SEA) to Ronald Reagan Washington National (DCA) typically departs around 12:05 AM local time. This service is operated by American Airlines and is seasonal, active in February and March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Washington, DC (DCA-Ronald Reagan Washington National)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA) on a Friday, with around 78 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, American Airlines, and Delta. Friday offers notably more flight options compared to other days of the week, making it a great day to consider for your trip.
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 - Tacoma Intl. (SEA) to Ronald Reagan Washington National (DCA) are in the early morning, from 6am to 9am. Many major carriers, including Delta, Alaska Airlines and American Airlines, offer flights during this window. Many travellers prefer this time as it allows for an early start to their day in Washington, DC.
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 3,738 kilometers. 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)?
You can fly business class or first class between SEA and DCA. Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • Delta
  • United
  • American Airlines
How do I earn miles on a Seattle, WA (SEA) to Washington, DC (DCA) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA) to Washington, DC (DCA) 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, DC (DCA) from Seattle, WA (SEA)?
If you're planning to travel to Washington from Seattle - Tacoma Intl. (SEA), you can fly directly into Ronald Reagan Washington National (DCA). Some flights may connect through major hubs like San Francisco Intl. (SFO), Denver Intl. (DEN), or Harry Reid International Airport (LAS) 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) to Washington, DC (DCA) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA) to Washington, DC (DCA) 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) to Washington, DC (DCA) flight and hotel package?
Securing a Seattle, WA (SEA) to Washington, DC (DCA) flight and hotel package 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) to Washington, DC (DCA)?
If you booked your Seattle, WA (SEA) to Washington, DC (DCA) 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, United
Return price
AU$397
Distance
3715 km
Average flight time
8 hours 10 mins

Book with confidence

Your quick guide to flights from Seattle to Washington

Pick up great flights from Seattle to Washington

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Seattle to Washington. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Seattle to Washington that take around hours.

Find cheap flights from Seattle to Washington

From the great flight deals with prices currently ranging from AU$397 to AU$519, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Seattle to Washington around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Washington is normally in August.

Reasons to book your flight from Seattle to Washington with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Seattle to Washington across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Washington right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Seattle to Washington

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*Available to Expedia members.