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

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Seattle, WA (LKE-Lake Union Seaplane Base)

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 center is 20 minutes. Flights from $417
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $417
Select flight to Snohomish County - Paine Field PAE. Average driving time to city center is 29 minutes. Flights from $419
PAE
Snohomish County - Paine Field
Average driving time to city center29 min
Flights from $419

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE) cost?
Lock in a cheap one-way flight or cheap return flight from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE) 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 Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE)?
is the most affordable month to fly from DCA to LKE. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE)?
To find the cheapest airline that'll fly you from DCA to LKE, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE)?
There aren't any daily direct flights available from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from DCA to LKE?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE)?
Choose a flight from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**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 Seattle from Ronald Reagan Washington National Airport (DCA)?
If you're flying on a direct flight from Ronald Reagan Washington National Airport (DCA) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE) last-minute?
Booking your flight from DCA to LKE right before your journey is generally more expensive. But if you're flexible with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a DCA to LKE flight and hotel package?
Opting for a DCA to LKE flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Lake Union Seaplane Base Airport (LKE)?
Usually, it's possible to cancel or reschedule your DCA to LKE flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Lake Union Seaplane Base
Distance
2323 mi

Book with confidence

Book with confidence

Washington to Seattle Flights

The cheapest times to fly from Washington to Seattle

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 Washington to Seattle are during the month of . You can find some of the cheapest flights from Washington to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Seattle

Sunday is one of the best days to book for cheap flights from Washington to Seattle: 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 Washington to Seattle

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 Washington to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Washington to Seattle 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 Washington to Seattle 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.

 

Washington to Seattle Flights

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*Available to One Key members.