SEA - DCA

$172 Find Cheap Flights from Seattle to Reagan Washington National Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Reagan-National departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$285
Typical prices: $327-$478
Alaska Airlines
Sat 9/5Tue 9/15
SEA - DCA • Non-stop
Cheapest non-stop
$285
Typical prices: $357-$507
Alaska Airlines
Wed 9/2Sat 9/5
SEA - DCA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta Comfort Plus adds legroom, while free Wi-Fi helps on this domestic route.
Alaska Premium Class adds priority boarding; its bag guarantee speeds claim.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Alaska Airlines and Delta. Average duration is 5h 15m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $266 (round-trip)
Shortest trip • 6h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 52% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
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Flight Deals
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Flight Deals

Cheap Flights from Seattle to Reagan-National (SEA-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Reagan-National that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Reagan-National

Sat, Sep 5 - Tue, Sep 15
Alaska Airlines Logo
8:00 am - 4:20 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
5h 20mnonstop
Alaska Airlines Logo
5:00 pm - 7:51 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
5h 51mnonstop
$285Alaska Airlines
Wed, Sep 2 - Sat, Sep 5
Alaska Airlines Logo
1:46 pm - 9:59 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
5h 13mnonstop
Alaska Airlines Logo
5:00 pm - 7:51 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
5h 51mnonstop
$285Alaska Airlines
Sat, Aug 29 - Mon, Aug 31
Multiple Airlines Logo
7:06 pm - 12:51 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
14h 45m1 stop Denver Intl
Multiple Airlines Logo
5:00 pm - 7:51 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
5h 51mnonstop
$285Multiple Airlines
Sat, Aug 29 - Tue, Sep 1
Multiple Airlines Logo
7:06 pm - 12:51 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
14h 45m1 stop Denver Intl
Multiple Airlines Logo
5:00 pm - 7:51 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
5h 51mnonstop
$285Multiple Airlines
Fri, Sep 18 - Sun, Sep 20
Frontier Logo
4:27 pm - 12:11 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
16h 44m1 stop Denver Intl
Frontier Logo
7:00 am - 6:36 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
38h 36m2 stops Denver Intl Los Angeles
$290Frontier
Fri, Sep 18 - Sun, Sep 20
Frontier Logo
4:27 pm - 12:11 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
16h 44m1 stop Denver Intl
Frontier Logo
7:00 am - 6:36 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
38h 36m2 stops Denver Intl Los Angeles
$291Frontier
Sat, Sep 5 - Thu, Sep 10
American Airlines Logo
5:50 am - 4:29 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
7h 39m1 stop Chicago O'Hare Intl
American Airlines Logo
3:58 pm - 9:36 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
8h 38m1 stop Chicago O'Hare Intl
$305American Airlines
Thu, Jan 28 - Sun, Jan 31
American Airlines Logo
12:32 am - 10:48 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
7h 16m1 stop Dallas/Fort Worth
American Airlines Logo
6:30 am - 1:17 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
9h 47m1 stop Dallas/Fort Worth
$305American Airlines
Fri, Sep 4 - Tue, Sep 8
Southwest Logo
11:05 pm - 8:45 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
6h 40m1 stop Chicago Midway
Southwest Logo
4:35 pm - 11:40 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
10h 05m1 stop Chicago Midway
$305Southwest
Mon, Aug 31 - Sun, Sep 6
Southwest Logo
11:05 pm - 11:25 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
9h 20m1 stop Chicago Midway
Southwest Logo
6:05 am - 11:15 amDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
8h 10m1 stop Dallas Love Field
$305Southwest
Booking Insights

KAYAK's insights & trends for Seattle to Reagan-National flights

Get data-powered insights and trends into flights from Seattle to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Washington, D.C. Reagan-National Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Washington, D.C. Reagan-National Airport departing in August.

Flight prices are below average for this route right now.

Flights to Washington, D.C. Reagan-National Airport from Seattle usually cost between $314 and $634 in August.
The lowest price found in the past 5 days was $285 on Multiple Airlines (Aug 29-Sep 1).

What’s the cheapest day of the week to fly from Seattle to Reagan Washington National Airport?

The average price of all round-trip flights from Seattle to Washington, D.C. Reagan-National Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Reagan Washington National Airport on a Thursday and more expensive on a Sunday. On your return trip to Seattle, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Seattle to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Washington, D.C. Reagan-National Airport is January, where tickets cost $299 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $533 and $530 respectively.

Can I save money by flying with a layover from Seattle to Washington, D.C. Reagan-National Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $430 on average.

How far in advance should I book a flight from Seattle to Washington, D.C. Reagan-National Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Washington, D.C. Reagan-National Airport, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Reagan-National

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Ramsey Qubein

Ramsey Qubein

Expert on DCA

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Good to know

Low season

January

Cheapest flight

$172
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Seattle to Reagan Washington National Airport

When to book flights from Seattle to Reagan-National

Are your dates flexible? Find out the best times to travel from Seattle to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Reagan Washington National Airport flights

  • How far is Reagan National Airport from the White House and National Mall?

    Reagan National Airport is roughly 3 miles from the two destinations. A typical taxi journey might deliver you to your destination in 5-10 minutes. It is also convenient to take the metro into the city center, although given how close the airport is, a taxi may be the better alternative.

  • What is there to do at Seattle-Tacoma International Airport?

    Sea-Tac Airport offers passengers more eye candy than duty-free shops with its artistic offerings. The airport has an inspiring collection of art pieces by international and local artists not to mention sculptures, paintings, and rotating exhibits that transform its terminals into museum hallways. Feast your eyes on Concourses B, A, D, C, N, and the Baggage Claim Area. The Airport’s Art Walk, half a mile long, is also a good alternative for those looking to stretch before jetting off.

  • Does SEA offer any services for travelers with pets?

    There are a variety of pet relief spots provided throughout Seattle Tacoma International Airport (SEA) for travelers who are flying with pets. Outside the main terminal, there are two relief stations, and three are placed inside the airport. North Satellite, South Satellite, and Concourse B all host inside pet relief spaces.

  • What are the transport options from DCA to the city center?

    The Metropolitan Center of Washington D.C. is close to DCA, making access fast and easy via the blue and yellow metro system lines. If you wish to get there faster, taxis are available although you may have to pay more.

  • What is the cheapest flight from Seattle to Washington, D.C. Reagan-National Airport?

    In the last 5 days, the lowest price for a flight from Seattle to Washington, D.C. Reagan-National Airport was $172 for a one-way ticket and $285 for a round-trip.

  • Do I need a passport to fly between Seattle and Reagan Washington National Airport?

    No, a passport isn't needed to fly from Seattle to Reagan Washington National Airport. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Reagan Washington National Airport?

    Alaska Airlines, Delta, JetBlue, and American Airlines offer inflight Wi-Fi service on the Seattle to Reagan Washington National Airport flight route.

  • Which aircraft models fly most regularly from Seattle to Reagan Washington National Airport?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to Reagan Washington National Airport flight route.

  • Which airline alliances offer flights from Seattle to Reagan Washington National Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Seattle and Reagan Washington National Airport, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Reagan Washington National Airport?

    There are nonstop flights from Seattle to Reagan Washington National Airport on a daily basis.

  • Which is the best airline for flights from Seattle to Washington, D.C., Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Washington, D.C. are Southwest and Alaska Airlines. With an average price for the route of $481 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $511 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Seattle to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Washington, D.C. Reagan-National Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $298 or less one-way and $408 or less round-trip.
  • If you are looking to be environmentally friendly in your journey, book flights from Seattle to Reagan Washington National Airport (DCA) with layovers. Roughly 1,721 kg of carbon is released per individual on these flights. Eco-friendlier trips are handled by United Airlines and American Airlines which emit 21% and 20% less carbon respectively.
  • Reagan National Airport (DCA) ensures universal access to all public facilities and services at the airport if you require accessible services. The terminal has elevators, and the parking lot is also accessible. If you require wheelchair assistance during your journey or upon arrival, please notify your airline ahead of time to ensure that the required assistance is provided when you deplane at DCA.
  • If you have any inquiries related to Sea-Tac Airport (SEA) or need assistance finding your gate, keep an eye out for airport personnel sporting bright blue vests. These volunteers are positioned around each terminal and are eager to answer any questions you may have regarding the airport's services and flights.
  • For passengers taking their bikes to Sea-Tac Airport, there is a bike facility on the premises equipped with complimentary pumps and tools, making assembling and dismantling your bike an instant process before your voyage. Long-term and day storage services are available at the Artirum between baggage claim carousel 2 and door 4 or the baggage claim near Gates C and D.
  • Although Washington D.C is served by two airports, Dulles International Airport (IAD) and Ronald Reagan Washington National Airport, DCA is a better alternative. The airport is closer and a major gateway for domestic flights to D.C.

Prefer to fly direct from Seattle to Reagan Washington National Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Washington, D.C. Reagan-National.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Washington, D.C. Reagan-National Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Washington, D.C. Reagan-National

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Direct returns

Washington, D.C. Reagan-National to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Everything you need to know for your flight from Seattle to Reagan-National

Information on your arrival and departure airports