SEA - DCA

$174 Find Cheap Flights from Seattle to Reagan Washington National Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$290
Typical prices: $315-$604
Frontier
Fri 10/5Fri 10/26
SEA - DCA • 1 stop
Cheapest non-stop
$377
Typical prices: $325-$616
Alaska Airlines
Mon 1/8Sat 1/13
SEA - DCA • Non-stop
Nonstop flights
You can fly direct with Alaska Airlines and Delta. Average duration is 5h 13m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 21 weeks in advance save around 56% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $266 (round-trip)
Shortest trip • 7h 26m (one-way)
Insights
Insights
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We hope you love your trip to Washington, D.C. Reagan-National Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
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 19 - Tue, Sep 22
Frontier Logo
8:15 pm - 12:11 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
36h 56m2 stops Los Angeles Denver Intl
Frontier Logo
7:00 am - 3:08 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
11h 08m1 stop Denver Intl
$290Frontier
Mon, Oct 5 - Mon, Oct 26
Frontier Logo
4:27 pm - 4:59 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
21h 32m1 stop Denver Intl
Frontier Logo
7:00 am - 6:26 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
38h 26m2 stops Denver Intl Los Angeles
$290Frontier
Sat, Oct 17 - Tue, Oct 20
Multiple Airlines Logo
7:04 am - 9:00 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
10h 56m1 stop San Diego
Multiple Airlines Logo
7:00 am - 3:12 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
11h 12m1 stop Denver Intl
$343Multiple Airlines
Wed, Oct 14 - Wed, Oct 21
Multiple Airlines Logo
7:04 am - 9:00 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
10h 56m1 stop San Diego
Multiple Airlines Logo
1:00 pm - 3:12 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
29h 12m1 stop Denver Intl
$343Multiple Airlines
Wed, Sep 16 - Tue, Sep 22
Alaska Airlines Logo
8:41 am - 9:00 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
9h 19m1 stop San Diego
Alaska Airlines Logo
5:00 pm - 7:51 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
5h 51mnonstop
$363Alaska Airlines
Wed, Jan 6 - Wed, Jan 13
Alaska Airlines Logo
1:59 pm - 9:59 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
5h 00mnonstop
Alaska Airlines Logo
5:00 pm - 8:04 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
6h 04mnonstop
$377Alaska Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
7:00 am - 5:08 pmSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
7h 08m1 stop Chicago O'Hare Intl
United Airlines Logo
5:59 pm - 10:56 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
7h 57m1 stop Chicago O'Hare Intl
$397United Airlines
Sun, Nov 15 - Sun, Nov 22
United Airlines Logo
10:56 pm - 9:56 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
8h 00m1 stop Chicago O'Hare Intl
United Airlines Logo
4:09 pm - 9:19 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
8h 10m1 stop Denver Intl
$397United Airlines
Sun, Nov 15 - Tue, Nov 17
Southwest Logo
12:15 am - 10:15 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
7h 00m1 stop Chicago Midway
Southwest Logo
6:50 pm - 11:30 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
7h 40m1 stop Chicago Midway
$397Southwest
Mon, Nov 30 - Fri, Dec 4
Southwest Logo
12:15 am - 10:15 amSEA  Seattle/Tacoma Intl-DCA Washington, D.C. Reagan-National
7h 00m1 stop Chicago Midway
Southwest Logo
3:35 pm - 11:30 pmDCA  Washington, D.C. Reagan-National-SEA Seattle/Tacoma Intl
10h 55m1 stop Chicago Midway
$397Southwest
Booking Insights

Price, demand and travel trends for Seattle to Washington, D.C. Reagan-National Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Washington, D.C. Reagan-National Airport with more confidence.

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

Round-trip flights from Seattle to Washington, D.C. Reagan-National Airport start at $290. Prices are below average for this route right now, with typical round-trip fares ranging from $315 to $604. The lowest price found in the past 5 days was $290 on Frontier.

What's the cheapest day of the week to fly from Seattle to Washington, D.C. Reagan-National Airport?

Thursday is the cheapest day of the week to fly from Seattle to Washington, D.C. Reagan-National Airport, it is 11% cheaper than the average day. Monday is the most expensive day with flight prices 31% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Seattle to Washington, D.C. Reagan-National Airport at $294 round-trip.
  • June ($614) and November ($503) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 108% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Washington, D.C. Reagan-National Airport the cheapest?

Flights from Seattle to Washington, D.C. Reagan-National Airport are cheapest 21 weeks before departure. Booking in this window typically costs about 56% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Seattle to Reagan-National

 
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.

Key details for Seattle to Washington, D.C. Reagan-National Airport flights

Low season

September

Cheapest flight

$174
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Seattle to Washington, D.C. Reagan-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

Your Seattle to Washington, D.C. Reagan-National Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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.

  • Which airlines offer extra legroom and free seat selection on Seattle to Washington, D.C. Reagan-National Airport flights?

    Among airlines operating Seattle to Washington, D.C. Reagan-National Airport flights:

    • Alaska Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from Seattle to Washington, D.C. Reagan-National Airport?

    2 airlines operate flights between Seattle and Washington, D.C. Reagan-National Airport. The airlines offering nonstop flights on this route include:
    • Alaska Airlines
    • Delta

  • Which airports can I use when flying from Seattle to Washington, D.C. Reagan-National Airport?

    Flights from Seattle to Washington, D.C. Reagan-National Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Washington, D.C. Reagan-National (DCA).

  • Which airlines include bags at no extra cost on Seattle to Washington, D.C. Reagan-National Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Alaska Airlines: a cabin bag and a checked bag in Economy Class
    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Seattle to Washington, D.C. Reagan-National Airport?

    Three cabin classes are available on flights from Seattle to Washington, D.C. Reagan-National Airport:

    • Economy Class
    • Premium Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Seattle to Washington, D.C. Reagan-National Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $266 round-trip via Boston Logan Intl (BOS), compared to $443 for nonstop.

  • What is the standard checked-bag allowance on flights from Seattle to Washington, D.C. Reagan-National Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Seattle to Washington, D.C. Reagan-National Airport?

    The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines. Other aircraft seen on the route include Airbus A321neo variants.

  • Which airports do connecting flights from Seattle to Washington, D.C. Reagan-National Airport pass through?

    One-stop flights from Seattle to Washington, D.C. Reagan-National Airport most commonly connect through:

    • Denver Intl (DEN) - 34% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 33% of one-stop connections
    • Chicago Midway (MDW) - 16% of one-stop connections
    • Charlotte Douglas (CLT) - 5% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Washington, D.C. Reagan-National Airport?

    Yes. Being flexible with your travel dates can save you up to 33% on the Seattle to Washington, D.C. Reagan-National Airport route. Thursday is the cheapest departure day at $381 round-trip on average, while Monday is the most expensive at $563, a difference of $182. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How are flight departures from Seattle to Washington, D.C. Reagan-National Airport spread across the day?

    Morning is the busiest departure period on Seattle to Washington, D.C. Reagan-National Airport flights, with 67% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 0%, and night flights for 0%.

  • What popular places can I visit in Washington, D.C. Reagan-National Airport?

    Some of the most popular sights in Washington, D.C. Reagan-National Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Reagan-National Airport on KAYAK.

  • How long is a flight from Seattle to Washington, D.C. Reagan-National Airport?

    A nonstop flight from Seattle to Washington, D.C. Reagan-National Airport takes 5h 13m, covering 2,321 miles.

  • What are the earliest and latest flights from Seattle to Washington, D.C. Reagan-National Airport?

    These are the earliest and latest flight times available from Seattle to Washington, D.C. Reagan-National Airport:

    • Earliest: departs at 7:20 am and lands at 12:33 pm
    • Latest: departs at 1:57 pm and lands at 7:10 pm.

    The flight takes about 5h 13m.

  • How expensive are last-minute Seattle to Washington, D.C. Reagan-National Airport flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 76% above the route average of $427. Book 21 weeks before departure for the lowest fares.

  • Do I need a passport to fly from Seattle to Washington, D.C. Reagan-National Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Seattle to Washington, D.C. Reagan-National Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $290 to $2,042. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Seattle to Washington, D.C. Reagan-National Airport looking right now?

    One-way fares from Seattle to Washington, D.C. Reagan-National Airport are currently lower than usual. Average one-way flight prices are about $206, which is 32% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Seattle to Washington, D.C. Reagan-National Airport?

    Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 7h 26m, compared with 7h 35m via Detroit Metropolitan Wayne County (DTW) and 7h 42m via Lambert-St Louis (STL).

  • What is the time difference between Seattle and Washington, D.C. Reagan-National Airport?

    Washington, D.C. Reagan-National Airport is 3 hours ahead of Seattle (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Washington, D.C. Reagan-National Airport (DCA)?

    Washington, D.C. Reagan-National Airport (DCA) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    · Sixt
    · Dollar
    · Thrifty
    · Alamo
    · Budget

  • How much should I expect to pay for a Seattle to Washington, D.C. Reagan-National Airport flight?

    Round-trip flights from Seattle to Washington, D.C. Reagan-National Airport range from $315 to $604, with an average of $427 over the past 12 months. Anything below $315 counts as a good deal.

  • Which airlines offer Wi-Fi on Seattle to Washington, D.C. Reagan-National Airport flights?

    Two airlines offer in-flight Wi-Fi on Seattle to Washington, D.C. Reagan-National Airport flights:

    • • Alaska Airlines
    • • Delta

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

Your guide to booking Seattle to Washington, D.C. Reagan-National Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average $381 - about $182 less than Monday (32% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 21 weeks before you fly. On this route, that window historically saves about 56% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Washington, D.C. Reagan-National Airport trip for February. Fares historically average $294 round-trip in that month - typically $320 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Boston Logan Intl Airport (BOS) can be cheaper than flying direct. The cheapest layover option averages $266 round-trip on this route - about $177 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Washington, D.C. Reagan-National Airport.
    - Hyatt House Washington DC The Wharf
    - Canopy by Hilton Washington D.C - The Wharf
    - Intercontinental Hotels Washington D.C. - The Wharf By IHG
  • 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?

 
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