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CA $200 Cheap Flights from Washington (DCA) to Seattle (SEA)

View CA $200 flight on Thu, Oct 1, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at CA $200 for one-way flights and CA $373 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep 5 - Wed, Sep 23
DCA
Washington
SEA
Seattle
CA $373 Roundtrip, found 2 days ago
CA $373
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Sep 5 from Washington to Seattle, returning Wed, Sep 23, priced at CA $373 found 2 days ago
American Airlines
Tue, Sep 22 - Sun, Sep 27
DCA
Washington
SEA
Seattle
CA $400 Roundtrip, just found
CA $400
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 22 from Washington to Seattle, returning Sun, Sep 27, priced at CA $400 just found
Alaska Airlines
Fri, Sep 11 - Wed, Sep 23
DCA
Washington
SEA
Seattle
CA $416 Roundtrip, found 2 days ago
CA $416
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Sep 11 from Washington to Seattle, returning Wed, Sep 23, priced at CA $416 found 2 days ago
JetBlue Airways
Tue, Sep 22 - Sun, Sep 27
DCA
Washington
SEA
Seattle
CA $421 Roundtrip, just found
CA $421
Roundtrip
just found
Select JetBlue Airways flight, departing Tue, Sep 22 from Washington to Seattle, returning Sun, Sep 27, priced at CA $421 just found
Alaska Airlines
Mon, Aug 31 - Sat, Sep 19
DCA
Washington
SEA
Seattle
CA $422 Roundtrip, found 2 days ago
CA $422
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Aug 31 from Washington to Seattle, returning Sat, Sep 19, priced at CA $422 found 2 days ago
Alaska Airlines
Tue, Sep 22 - Wed, Sep 30
DCA
Washington
SEA
Seattle
CA $423 Roundtrip, found 3 days ago
CA $423
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Sep 22 from Washington to Seattle, returning Wed, Sep 30, priced at CA $423 found 3 days ago
JetBlue Airways
Tue, Sep 1 - Tue, Sep 15
DCA
Washington
SEA
Seattle
CA $425 Roundtrip, found 5 days ago
CA $425
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Tue, Sep 1 from Washington to Seattle, returning Tue, Sep 15, priced at CA $425 found 5 days ago
Alaska Airlines
Tue, Sep 1 - Tue, Sep 15
DCA
Washington
SEA
Seattle
CA $427 Roundtrip, found 5 days ago
CA $427
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Washington to Seattle, returning Tue, Sep 15, priced at CA $427 found 5 days ago
Delta
Mon, Sep 21 - Tue, Sep 29
DCA
Washington
SEA
Seattle
CA $444 Roundtrip, found 18 hours ago
CA $444
Roundtrip
found 18 hours ago
Select Delta flight, departing Mon, Sep 21 from Washington to Seattle, returning Tue, Sep 29, priced at CA $444 found 18 hours ago
United
Sat, Sep 5 - Sun, Sep 20
DCA
Washington
SEA
Seattle
CA $556 Roundtrip, found 2 days ago
CA $556
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Washington to Seattle, returning Sun, Sep 20, priced at CA $556 found 2 days ago

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from CA $911
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from CA $911

Frequently asked questions

How much does a flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from CA $200 and cheap return flights from CA $373 DCA to SEA with Expedia. One-way flights typically cost between CA$783 and CA$1822. 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 DCA to SEA ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average return fares around CA$489. January often sees lower prices because it falls after the busy holiday travel season, when demand tends to decrease, leading airlines to offer more competitive fares. February and September are also good months to find deals on this route.
Which airlines fly direct from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 2 airlines offering direct flights from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Here are the carriers:
  • Delta operates 7 direct flights from Ronald Reagan Washington National to Seattle - Tacoma Intl. every week.
  • Japan Airlines operates 7 direct flights from Ronald Reagan Washington National to Seattle - Tacoma Intl. every week.
How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.), 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Alaska Airlines 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.), 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 Washington, DC (DCA) to Seattle, WA (SEA)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There is 1 nonstop flight per day from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choices, look at flights that include layovers, as there are around 168 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Charlotte-Douglas Intl. (CLT).
What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 5:00 AM. This service is offered by American Airlines. This is a seasonal service active in April. 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Ronald Reagan Washington National (DCA) to Seattle - Tacoma Intl. (SEA) on a Friday, with around 85 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Fridays offer notably more flight options compared to other days of the week, making it a popular choice for travellers.
What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Ronald Reagan Washington National (DCA) to Seattle - Tacoma Intl. (SEA) are in the early morning, from 6am to 9am. Many major carriers, including Alaska Airlines, American Airlines and Delta, offer flights during this window. Many travellers prefer these early flights to get a head start on their journey and arrive at their destination with plenty of time left in the day.
How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A non-stop flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically takes around 6 hours. This route covers a distance of approximately 3,738 kilometers. If you opt for a one-stop flight, your travel time will be longer, usually around 8 hours 48 minutes. Flights with two or more stops will take even longer, averaging about 13 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your journey.
Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between DCA and SEA. You can fly business class with Frontier Airlines and Delta.First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.
How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Seattle, WA (SEA) from Washington, DC (DCA)?
If you're planning to travel to Seattle from Ronald Reagan Washington National (DCA), you can fly directly into Seattle - Tacoma Intl. (SEA). Some flights may connect through major hubs like San Diego Intl. (SAN), Seattle - Tacoma Intl. (SEA), or O'Hare Intl. (ORD) before reaching Seattle. 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Washington, DC (DCA-Ronald Reagan Washington National) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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
Ronald Reagan Washington National
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways
Roundtrip price
CA $372
Distance
3715 km
Average flight time
5 hours 15 mins

Book with confidence

Washington to Seattle Flights

The easy way to book your flights from Washington to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Ronald Reagan Washington National, DCA to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Washington to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Washington currently is just CA $373 rising to CA $556.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Washington 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Washington to Seattle Flights

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