$154 Cheap United flights from Washington to Seattle (DCA to SEA)

Find The Best Day To Fly from Washington to Seattle

Amazing United DCA to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $268 round trip and $154 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Aug 23 - Wed, Aug 28
DCA
Washington
SEA
Seattle
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 23 from Washington to Seattle, returning Wed, Aug 28, priced at $268 found 2 days ago
Sat, Aug 31 - Sun, Sep 1
DCA
Washington
SEA
Seattle
$303 Roundtrip, found 10 hours ago
$303
Roundtrip
found 10 hours ago
Select United flight, departing Sat, Aug 31 from Washington to Seattle, returning Sun, Sep 1, priced at $303 found 10 hours ago

SEA From DCA Economy Coach Packages on Similar Airlines

Prices and availability subject to change. Additional terms may apply.
Mediterranean Inn

Mediterranean Inn

3 out of 5
Save 100% on your flight
per person
Jun 9 - Jun 15
Roundtrip non-stop flight included
Washington (DCA) to Seattle (SEA)
Lotte Hotel Seattle

Lotte Hotel Seattle

5 out of 5
Save 100% on your flight
per person
Jul 14 - Jul 18
Roundtrip non-stop flight included
Baltimore (BWI) to Seattle (SEA)
The Belltown Inn

The Belltown Inn

2.5 out of 5
Save 100% on your flight
per person
May 6 - May 13
Roundtrip non-stop flight included
Washington (DCA) to Seattle (SEA)
Don't see what you're looking for?
See all available trips from Ronald Reagan Washington National to Seattle - Tacoma Intl.
View all trips

Frequently asked questions

Can I catch a flight from National Airport to Seattle - Tacoma Intl. Airport (SEA) right now?
Ensure you check out our Covid-19 Travel Advisor to learn if there are any present quarantine requirements or travel advice reports in effect in SEA when jet-setting from National Airport.
What terminal is United Airlines at National Airport?
You should find out which terminal United Airlines leaves from at National Airport once you receive your ticket. The same applies to information about your arrival at Sea-Tac Airport. If you can’t locate those details, ask your airline.
Are there United Airlines non-stop flights from DCA to SEA?
If you want to travel with United Airlines from Ronald Reagan Washington National Airport (DCA) to Seattle - Tacoma Intl. Airport (SEA), you’ll need to make a stopover. While waiting for your next flight, take the chance to pick up a snack or explore the airport shops.
How long is a United Airlines flight from DCA to SEA?
Watch your favorite TV show, listen to music through your headphones or just put your seat back and close your eyes. Whatever interests you, you’ll need to find a way to amuse yourself during the 7 hours and 54 minutes that it takes to journey from DCA to SEA with United Airlines.
How many direct and indirect flights does United Airlines fly from DCA to SEA?
You’ll have a lot of options if you’re thinking about flying with United Airlines between DCA and SEA. It’s currently operating around 3 flights per day on this route.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Sea-Tac Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Washington DCA to Seattle SEA 

To find the best deals on flights to Washington from Seattle with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Washington DCA to Seattle SEA with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $268 to $303, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Washington DCA to Seattle SEA 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Washington to Seattle costs from $154. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Seattle SEA from  Washington DCA with United 

To find a cheap United flight from Washington DCA to Seattle SEA, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Washington DCA to Seattle SEA 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as August, or if you book a flight with a stopover. 

 

Find nonstop flights from Washington DCA to Seattle SEA with United 

If you’re keen to be on Seattle soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Washington DCA to Seattle SEA 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Seattle SEA from  Washington DCA with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Seattle

Red Roof Inn Seattle Airport - SEATAC
Red Roof Inn Seattle Airport - SEATAC
2 out of 5
16838 International Boulevard, SeaTac, WA
A gym, self parking, and laundry facilities are featured at this hotel. Guests will appreciate perks like free WiFi and a free airport shuttle. There's a safe ...
8/10 Very Good! (2,864 reviews)
10
"Employee are friendly and the place is nice and it smell good. Only issue is no microwave but overall is very suitable place to stay."

Reviewed on Apr 25, 2024

Red Roof Inn Seattle Airport - SEATAC
Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
3 out of 5
3100 South 192nd Street, SeaTac, WA
This hotel features an indoor pool and a gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and free airport ...
8.8/10 Excellent! (4,565 reviews)
"Great place to stay if you’re heading to the airport early or get in late. Parking was easy. Breakfast was just okay. Room was clean and comfortable."

Reviewed on Apr 24, 2024

Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
Coast Gateway Hotel
Coast Gateway Hotel
3.5 out of 5
18415 International Blvd, SeaTac, WA
This hotel features a restaurant, a gym, and a bar/lounge. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and ...
9.2/10 Wonderful! (5,391 reviews)
"Rrr"

Reviewed on Apr 23, 2024

Coast Gateway Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.