$104 Cheap Flights from Washington (DCA) to Seattle (SEA)

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Flight deals we found

These prices are lower than our typical predictions for similar flights.
40% less than typical
$397
Roundtrip per traveler
Wed, Oct 9 - Tue, Oct 15
Alaska AirlinesAlaska Airlines
5h 54m
8:00am
10:54am
DCA
Nonstop
SEA
Found 13 hours ago
45% less than typical
$295
Roundtrip per traveler
Wed, Oct 9 - Tue, Oct 15
American AirlinesAmerican Airlines
7h 53m
3:50pm
8:43pm
DCA
1 stop • 30m in CLT
SEA
Found 13 hours ago
45% less than typical
$308
Roundtrip per traveler
Tue, Jul 9 - Wed, Jul 17
American AirlinesAmerican Airlines
9h 28m
6:08am
12:36pm
DCA
1 stop • 2h 27m in ORD
SEA
Found 21 hours ago

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Cheap Flights from Washington to Seattle (DCA-SEA)

Prices were available within the past 7 days and start at $104 for one-way flights and $196 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Aug 28 - Sat, Aug 31
DCA
Washington
SEA
Seattle
$196 Roundtrip, just found
$196
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Aug 28 from Washington to Seattle, returning Sat, Aug 31, priced at $196 just found
Frontier Airlines
Sat, Jun 1 - Fri, Jun 7
DCA
Washington
SEA
Seattle
$201 Roundtrip, found 1 hour ago
$201
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Jun 1 from Washington to Seattle, returning Fri, Jun 7, priced at $201 found 1 hour ago
Frontier Airlines
Tue, Aug 20 - Mon, Aug 26
DCA
Washington
SEA
Seattle
$206 Roundtrip, found 16 hours ago
$206
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Tue, Aug 20 from Washington to Seattle, returning Mon, Aug 26, priced at $206 found 16 hours ago
Frontier Airlines
Tue, Jun 4 - Fri, Jun 7
DCA
Washington
SEA
Seattle
$209 Roundtrip, found 1 hour ago
$209
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Jun 4 from Washington to Seattle, returning Fri, Jun 7, priced at $209 found 1 hour ago
Frontier Airlines
Tue, Aug 20 - Fri, Aug 23
DCA
Washington
SEA
Seattle
$212 Roundtrip, found 16 hours ago
$212
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Tue, Aug 20 from Washington to Seattle, returning Fri, Aug 23, priced at $212 found 16 hours ago
Frontier Airlines
Sat, Aug 24 - Sat, Aug 31
DCA
Washington
SEA
Seattle
$220 Roundtrip, just found
$220
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 24 from Washington to Seattle, returning Sat, Aug 31, priced at $220 just found
Frontier Airlines
Mon, Aug 19 - Mon, Aug 26
DCA
Washington
SEA
Seattle
$222 Roundtrip, found 16 hours ago
$222
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Mon, Aug 19 from Washington to Seattle, returning Mon, Aug 26, priced at $222 found 16 hours ago
JetBlue Airways
Tue, Sep 3 - Tue, Sep 3
DCA
Washington
SEA
Seattle
$224 Roundtrip, found 2 days ago
$224
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Tue, Sep 3 from Washington to Seattle, returning Tue, Sep 3, priced at $224 found 2 days ago
Frontier Airlines
Sat, Jun 1 - Wed, Jun 5
DCA
Washington
SEA
Seattle
$228 Roundtrip, just found
$228
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jun 1 from Washington to Seattle, returning Wed, Jun 5, priced at $228 just found
Frontier Airlines
Mon, Aug 26 - Fri, Aug 30
DCA
Washington
SEA
Seattle
$230 Roundtrip, found 1 hour ago
$230
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Aug 26 from Washington to Seattle, returning Fri, Aug 30, priced at $230 found 1 hour ago
Flights from Washington (DCA) to Seattle (SEA)
Origin airport
Ronald Reagan Washington National
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, United
Roundtrip price
$196
Distance
2322 mi
Average flight time
2 hours 51 mins

Washington to Seattle Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to Seattle offer the perfect respite. Not only does exploring Seattle provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Washington to Seattle may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from DCA to SEA today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Seattle are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Seattle more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is $104 now!

Frequently asked questions

How much is a one-way flight from Ronald Reagan Washington National Airport (DCA) to SEA?
You can get one-way Washington flights to Seattle starting from $114. This is based on the best price found on Expedia for this journey with a departure date within the next three months and was last updated on May 7 2024 and has not changed since. This fare is for an Frontier Airlines service, jetting off from National Airport on May 25 2024 and arriving at SEA.
How long does it take to fly from DCA to SEA?
A direct flight with Alaska Airlines takes about 5 hours and 45 minutes. Hop on the 5:15PM flight from National Airport and land at SEA at 8:00PM. Clinch a top deal on this and other routes when you use Expedia to arrange your trip.
Is it cheaper to buy a plane ticket from National Airport to Sea-Tac Airport last minute?
When it’s time to book your flights, being prepared pays dividends. While it’s possible to pick up a deal on a DCA to Seattle - Tacoma Intl. Airport (SEA) flight at the last minute, tickets usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days ahead. For international flights it’s three to four months.
What is the cheapest airline flying from DCA to Sea-Tac Airport in the next 90 days?
Based on airfares found on Expedia with a departure date within the next 90 days, Frontier Airlines is the cheapest airline flying from Washington to Seattle. The fare for this route starts at $114. This flight jets off from National Airport on May 25 2024 and touches down at Sea-Tac Airport. The price was last updated on May 7 2024 and has not changed since.
What's the cheapest price for a flight from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport next month?
The lowest price for a flight from Washington to Seattle within the next month is $114. If you plan to travel soon, lock in this fare before it’s gone. This ticket price was found after looking at all available flights on Expedia with a departure date within the next 30 days. This fare is for a one-way Frontier Airlines flight leaving National Airport on May 25 2024 and arriving at SEA. The price was updated on May 7 2024 and has not changed since.
What airline has the least delays from DCA to Seattle - Tacoma Intl. Airport (SEA)?
If you don’t want to be stuck in the departure lounge — or worse, your vacation plans shelved because of a flight delay — go with Alaska Airlines. Around 89% of its DCA to SEA services get in on schedule. You can check your flight status before traveling to the airport through the free Expedia App. It also delivers real-time notifications about other useful things, such as last-minute gate changes and directions to your hotel. You’ll have all the details in your pocket with our handy travel companion.
Can I find cheap nonstop flights from Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA) in the next three months?
Your next vacation doesn’t have to cost a fortune. We’ve discovered a roundtrip nonstop flight from Washington to Seattle within the next 90 days for $377. This price was found after looking at all available flights on Expedia with a departure date in the next three months and was updated on May 7 2024. The flight via Alaska Airlines departs from DCA on May 29 2024 and arrives at SEA. It has a return date of June 5 2024.Use our handy filters to search for nonstop cheap flights from Ronald Reagan Washington National Airport (DCA) to SEA. Just click on “Nonstop” under “Filter by” after your search results appear. Not set on flying on a specific day? You can also make use of the “Flexible dates” dropdown menu to review ticket prices for nearby dates. Booking a fare that best fits your budget and schedule couldn’t be simpler.
What airports do you fly into for Seattle from Arlington?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to choose from, journeying from Arlington to Seattle is a breeze. The city’s main gateway, Seattle - Tacoma Intl. Airport (SEA), is approximately 12 mi south of the center. Along with the price of tickets, consider things like the ease of getting from the airport and the distance to your hotel before making your decision. Get your Seattle trip off to a fun start by visiting Space Needle and Pike Place Market.
What are the most popular departure times for flights from DCA to Sea-Tac Airport?
For Alaska Airlines flights heading from Ronald Reagan Washington National Airport (DCA) to Sea-Tac Airport, the peak period is between 8:00 AM - 9:00 AM. If you want to avoid those frustrating delays, fly out in the morning. This way you’re more likely to dodge the air traffic that builds up in the afternoon.
Can I change the date of my flight from DCA to Sea-Tac Airport?
Quickly make changes to your DCA to Seattle - Tacoma Intl. Airport (SEA) trip by logging in to the Expedia Trips portal. Before you make any amendments, browse the ticket rules in your itinerary to see what you’re allowed to do and what fees apply for changes. Some airlines have a change fee per person, in addition to any difference in fares. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also take a look at our Customer Service portal for more useful advice and to connect with our Virtual Agent.
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