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Cheap flights from Seattle to Washington, D.C. Reagan-National Airport from C$ 209

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DCA
8 Feb — 15 Feb1
1 adult

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 3 February 2025.

Round-trip from

C$ 417

One-way from

C$ 209

Popular in

December

Cheapest in

September

Average price

C$ 685
Delta
  • Delta
  • 12/3-17/3
  • Nonstop
  • 11h 08m total
  • Seattle to Washington, D.C.
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Delta
  • Delta
  • 9/3
  • Nonstop
  • 5h 07m total
  • Seattle to Washington, D.C.
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
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Average for round-trip flights in February 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 3 February 2025.

Wed 12/37:23 a.m.SEA - DCA
Nonstop5h 07mDelta
Sat 15/34:40 p.m.DCA - SEA
Nonstop6h 01mDelta
Deal found 3/2C$ 417
Tue 4/311:59 p.m.SEA - DCA
1 stop7h 32mUnited Airlines
Fri 7/35:00 p.m.DCA - SEA
1 stop8h 39mUnited Airlines
Deal found 3/2C$ 446
Thu 27/211:48 p.m.SEA - DCA
1 stop11h 11mJetBlue
Mon 3/33:50 p.m.DCA - SEA
1 stop9h 48mJetBlue
Deal found 3/2C$ 452
Thu 6/35:45 a.m.SEA - DCA
2 stops9h 25mSouthwest
Tue 11/32:40 p.m.DCA - SEA
1 stop8h 35mSouthwest
Deal found 3/2C$ 455
Thu 6/32:05 p.m.SEA - DCA
Nonstop4h 54mAlaska Airlines
Tue 18/38:00 a.m.DCA - SEA
Nonstop6h 06mAlaska Airlines
Deal found 3/2C$ 470

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 629,999 searches. Data last updated 3 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 12/3

7:23 a.m.-3:30 p.m.

Nonstop5h 07m

Washington, D.C. Reagan-National

Mon 17/3

4:40 p.m.-7:41 p.m.

Nonstop6h 01m

C$ 417

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Tue 4/3

11:59 p.m.-10:31 a.m.

1 stop7h 32m

Washington, D.C. Reagan-National

Fri 7/3

5:00 p.m.-10:39 p.m.

1 stop8h 39m

C$ 446

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 27/2

11:48 p.m.-1:59 p.m.

1 stop11h 11m

Washington, D.C. Reagan-National

Mon 3/3

3:50 p.m.-10:38 p.m.

1 stop9h 48m

C$ 452

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 6/3

5:45 a.m.-6:10 p.m.

2 stops9h 25m

Washington, D.C. Reagan-National

Mon 10/3

4:30 p.m.-12:30 a.m.

1 stop11h 00m

C$ 455

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 6/3

2:05 p.m.-9:59 p.m.

Nonstop4h 54m

Washington, D.C. Reagan-National

Tue 18/3

8:00 a.m.-11:06 a.m.

Nonstop6h 06m

C$ 470

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sun 9/3

7:23 a.m.-3:30 p.m.

Nonstop5h 07m

C$ 209

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 12/3

11:59 p.m.-9:20 a.m.

1 stop6h 21m

C$ 224

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 5/3

11:48 p.m.-11:44 a.m.

1 stop8h 56m

C$ 257

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 5/3

8:15 a.m.-4:24 p.m.

Nonstop5h 09m

C$ 260

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Tue 6/5

5:00 a.m.-6:55 p.m.

2 stops10h 55m

C$ 275

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

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 31 January 2025.

The best time to book flights from Seattle to Washington, D.C. Reagan-National Airport is 16 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of C$ 263). Flying from Seattle to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of C$ 385). 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 3 February 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Washington, D.C. Reagan-National Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight at noon.

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 3 February 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 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 66.0 mm.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 3 February 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Seattle to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
4,564 reviews
Southwest
8.1
Very good
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
8,427 reviews
Southwest
8.1
Very good
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
3,141 reviews
Southwest
8.1
Very good
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
8,889 reviews
Southwest
8.1
Very good
4,564 reviews
Check prices

Food

7.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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?

    If you book a flight to Washington, D.C. Reagan-National from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 18.4 km from the centre of Seattle. There are 8 flights from Seattle/Tacoma Intl to Washington, D.C. Reagan-National per day from 0 different airlines.

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

    Flying on Delta is currently your cheapest option to Washington, D.C. Reagan-National Airport, with prices starting at C$ 417. Additional round-trip tickets that might be worth considering are offered by United Airlines and JetBlue, with the lowest prices starting at C$ 446 and C$ 452, respectively. Users have found that Delta is 44% cheaper than the other options available to this destination.

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

    C$ 209 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and JetBlue, with prices starting from C$ 224 and C$ 257, respectively.

  • 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 Japan Airlines (90%), Korean Air (90%) or Alaska Airlines (86%) as they are the most reliable in getting you off to your destination on time.

  • 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, March is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of C$ 263). Flying from Seattle to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of C$ 385). 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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