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Reagan-National

$144+ Cheap flights from Seattle (SEA) to Reagan-National (DCA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DCA
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Washington, D.C. Reagan-National are usually found in September or November, booked 16 days in advance, depart on a Tuesday or Thursday and return on a Saturday

Cheap flight deals from Seattle to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Kiwi.com)

One-way from

$144
(Delta)

Popular in

December

Cheapest in

September

Average price

$437
Provider with most accurate pricing for Seattle/Tacoma Intl-Washington, D.C. Reagan-National flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Washington, D.C. Reagan-National flights.
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From Seattle/Tacoma Intl to Washington, D.C. Reagan-National
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One-way flight from Seattle/Tacoma Intl to Washington, D.C. Reagan-National
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High demand for flights, 1% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to Reagan-National

Cheapest flights from Seattle to Reagan-National
Explore the most affordable flight options available from Seattle to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/151:36 pmSEA - DCA
1 stop19h 27mFrontier
Sat 2/227:00 amDCA - SEA
1 stop8h 46mFrontier
Deal found 1/16$287
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1111:17 pmSEA - DCA
1 stop8h 14mUnited Airlines
Wed 2/123:30 pmDCA - SEA
1 stop10h 23mUnited Airlines
Deal found 1/16$292
This American Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2112:25 amSEA - DCA
1 stop8h 34mAmerican Airlines
Wed 2/265:00 amDCA - SEA
1 stop9h 04mAmerican Airlines
Deal found 1/16$297
This Delta deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/226:15 amSEA - DCA
1 stop14h 05mDelta
Wed 2/266:05 amDCA - SEA
1 stop13h 49mDelta
Deal found 1/16$305
This Travelocity deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/198:15 amSEA - DCA
Nonstop5h 09mMultiple Airlines
Wed 2/267:00 amDCA - SEA
1 stop8h 36mMultiple Airlines
Deal found 1/16$309
This JetBlue deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2411:48 pmSEA - DCA
1 stop8h 56mJetBlue
Mon 3/33:50 pmDCA - SEA
1 stop9h 48mJetBlue
Deal found 1/16$311
This Alaska Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/252:05 pmSEA - DCA
Nonstop4h 54mAlaska Airlines
Tue 3/48:00 amDCA - SEA
Nonstop6h 06mAlaska Airlines
Deal found 1/16$317
This Southwest deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/205:05 amSEA - DCA
2 stops10h 35mSouthwest
Wed 2/266:55 amDCA - SEA
1 stop7h 55mSouthwest
Deal found 1/16$332

Find flights from Seattle to Reagan-National within your budget

Customize your flight search to find flights from Seattle to Reagan-National that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sun 3/9

7:23 am-3:29 pm

Nonstop5h 06m

Washington, D.C. Reagan-National

Wed 3/12

4:40 pm-7:41 pm

Nonstop6h 01m

$287

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Fri 4/11

1:56 pm-11:59 am

1 stop19h 03m

Washington, D.C. Reagan-National

Wed 4/16

6:00 pm-11:56 am

1 stop20h 56m

$289

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Tue 2/11

11:17 pm-10:31 am

1 stop8h 14m

Washington, D.C. Reagan-National

Wed 2/12

3:30 pm-10:53 pm

1 stop10h 23m

$292

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Fri 2/21

12:25 am-10:59 am

1 stop7h 34m

Washington, D.C. Reagan-National

Wed 2/26

5:00 am-11:04 am

1 stop9h 04m

$297

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 2/6

8:24 am-4:29 pm

Nonstop5h 05m

Washington, D.C. Reagan-National

Sun 2/16

7:00 am-12:02 pm

1 stop8h 02m

$303

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 3/5

11:48 pm-11:44 am

1 stop8h 56m

Washington, D.C. Reagan-National

Tue 3/11

4:15 pm-10:38 pm

1 stop9h 23m

$311

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 3/5

2:05 pm-9:59 pm

Nonstop4h 54m

Washington, D.C. Reagan-National

Tue 3/11

9:00 am-4:54 pm

1 stop10h 54m

$312

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 2/6

7:45 am-8:35 pm

2 stops9h 50m

Washington, D.C. Reagan-National

Sun 2/9

6:55 am-11:50 am

1 stop7h 55m

$357

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 3/13

7:23 am-3:29 pm

Nonstop5h 06m

$144

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 2/20

2:02 pm-4:59 pm

1 stop23h 57m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 15 results
1
2

Compare providers for flights from Seattle to Reagan-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Reagan-National in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Reagan-National

Get recent, data-driven insights about flights from Seattle to Reagan-National including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Reagan-National. Price data was last updated on January 10, 2025.

The price you pay for your flight from Seattle to Washington, D.C. Reagan-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 16 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of $278). Flying from Seattle to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to DCA?

Find hourly flight availability from Seattle to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 16, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 43% on flights from Seattle to Washington, D.C. Reagan-National Airport by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Reagan-National. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Washington, D.C. Reagan-National Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Washington, D.C. Reagan-National Airport

Explore weekly flight availability from Seattle to Reagan-National. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 16, 2025.

The most flights from SEA to DCA are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Reagan-National. Reviews last updated January 16, 2025.
Read reviews from past customers who have flown Frontier, United Airlines and American Airlines from Seattle to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,199 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Washington, D.C. Reagan-National?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Washington, D.C. Reagan-National. 7 airlines have flights from Seattle/Tacoma Intl to Washington, D.C. Reagan-National on a regular basis. Booking flights from Seattle/Tacoma Intl to Washington, D.C. Reagan-National should not be difficult; the airport handles an average of 8 outbound flights to Washington, D.C. Reagan-National per day.

  • What are the cheapest airlines flying from Seattle to Washington, D.C. Reagan-National Airport round-trip?

    Our cheapest airline available from Seattle to Washington, D.C. Reagan-National Airport is Frontier. Our recent data shows that you can find tickets from as low as $287 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $292 and $297 round-trip. Frontier is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Washington, D.C. Reagan-National Airport one-way?

    The cheapest airlines for a one-way flight from Seattle to Washington, D.C. Reagan-National Airport are Delta ($144), Frontier ($148), and American Airlines ($149).

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Washington, D.C. Reagan-National Airport consider choosing Alaska Airlines (85%), Hawaiian Airlines (85%) or Air Tahiti Nui (85%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Seattle to Washington, D.C. Reagan-National Airport? While on average our users pay $352, our data indicates the cheapest price to be $148. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Reagan-National), is priced around $140.

  • Can I find deals for flights from Seattle to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Seattle to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Reagan-National.

  • Can I find deals for business class flights from Seattle to Reagan-National?

    Yes. Cheapflights offers flight deals from Seattle to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of $278). Flying from Seattle to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Seattle to Reagan-National

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Top 7 airlines flying from Seattle to Reagan-National

Discover the top 7 airlines that operate flights from Seattle to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$135Average$285FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$215Average$452FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$249Average$341FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$276Average$427FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$489FlexibilityNo cancel feeOn-time71%
DeltaCheapest$316Average$675FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$359Average$597FlexibilityNo cancel feeOn-time75%
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