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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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DCA
7 Jan — 14 Jan1
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 2 January 2025.

Round-trip from

C$ 416

One-way from

C$ 209

Popular in

December

Cheapest in

September

Average price

C$ 611
Alaska Airlines
  • Alaska Airlines
  • 12/3-17/3
  • Nonstop
  • 11h 04m total
  • Seattle to Washington, D.C.
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Alaska Airlines
  • Alaska Airlines
  • 2/4
  • Nonstop
  • 4h 51m total
  • Seattle to Washington, D.C.
Search Deals
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 2 January 2025.

Wed 12/32:05 p.m.SEA - DCA
Nonstop4h 54mAlaska Airlines
Mon 17/35:25 p.m.DCA - SEA
Nonstop6h 10mAlaska Airlines
Deal found 2/1C$ 416
Fri 29/87:23 a.m.SEA - DCA
Nonstop5h 06mDelta
Sat 6/94:40 p.m.DCA - SEA
Nonstop6h 01mDelta
Deal found 2/1C$ 430
Thu 6/26:10 a.m.SEA - DCA
2 stops11h 38mUnited Airlines
Sat 8/24:13 p.m.DCA - SEA
1 stop7h 58mUnited Airlines
Deal found 1/1C$ 444
Wed 12/311:48 p.m.SEA - DCA
1 stop8h 56mJetBlue
Mon 17/34:15 p.m.DCA - SEA
1 stop9h 23mJetBlue
Deal found 2/1C$ 447
Wed 19/210:40 a.m.SEA - DCA
1 stop6h 55mSouthwest
Wed 5/32:55 p.m.DCA - SEA
2 stops10h 45mSouthwest
Deal found 2/1C$ 521

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 2 January 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

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

Nonstop4h 54m

Washington, D.C. Reagan-National

Mon 17/3

5:25 p.m.-8:35 p.m.

Nonstop6h 10m

C$ 416

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 6/2

6:10 a.m.-8:48 p.m.

2 stops11h 38m

Washington, D.C. Reagan-National

Sat 8/2

4:13 p.m.-9:11 p.m.

1 stop7h 58m

C$ 444

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 12/3

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

1 stop8h 56m

Washington, D.C. Reagan-National

Mon 17/3

4:15 p.m.-10:38 p.m.

1 stop9h 23m

C$ 447

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 19/2

10:40 a.m.-8:35 p.m.

1 stop6h 55m

Washington, D.C. Reagan-National

Wed 5/3

2:55 p.m.-10:40 p.m.

2 stops10h 45m

C$ 521

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Mon 24/3

10:55 p.m.-11:34 a.m.

1 stop9h 39m

Washington, D.C. Reagan-National

Tue 1/4

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

Nonstop6h 01m

C$ 574

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 2/4

2:08 p.m.-9:59 p.m.

Nonstop4h 51m

C$ 209

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Mon 31/3

11:59 p.m.-12:57 p.m.

1 stop9h 58m

C$ 221

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sat 5/4

11:54 p.m.-11:39 a.m.

1 stop8h 45m

C$ 255

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sat 1/3

6:40 a.m.-6:45 p.m.

2 stops9h 05m

C$ 263

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Wed 26/2

7:45 p.m.-11:00 a.m.

2 stops12h 15m

C$ 351

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

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 27 December 2024.

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$ 387). 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 2 January 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 at noon. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight in the morning.

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 2 January 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and Alaska Airlines 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
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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
4,694 reviews
Southwest
8.1
Very good
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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
9,604 reviews
Southwest
8.1
Very good
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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
8,536 reviews
Southwest
8.1
Very good
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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
3,214 reviews
Southwest
8.1
Very good
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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
8,968 reviews
Southwest
8.1
Very good
4,694 reviews
Check prices

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Entertainment

7.7

Crew

8.7

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?

    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 4 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 Alaska Airlines is currently your cheapest option to Washington, D.C. Reagan-National Airport, with prices starting at C$ 416. Additional round-trip tickets that might be worth considering are offered by United Airlines and JetBlue, with the lowest prices starting at C$ 444 and C$ 447, respectively. Users have found that Alaska Airlines is 42% 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 Alaska Airlines. You may also be able to find cheap deals on United Airlines and JetBlue, with prices starting from C$ 221 and C$ 255, 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 (85%), Korean Air (85%) or Alaska Airlines (83%) 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 at all options, your cheapest flight can be booked for C$ 401. While the most popular route (Seattle/Tacoma Intl - Washington, D.C. Reagan-National) can be booked for C$ 713 on average our data indicates C$ 430 when flying from Seattle to Washington, D.C. Reagan-National Airport.

  • 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$ 387). 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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