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

According to our current data, Frontier ($255), Hawaiian Airlines ($263), and Southwest ($302) offers the cheapest pricing from Washington, D.C. Reagan-National Airport to Seattle. These flights start at 44% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $143. Delta flights start at $149 while deals on Southwest start at $154 one-way.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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

The cheapest flight price from Washington, D.C. Reagan-National Airport to Seattle is $148. On average you can expect to pay $2,402. The most popular route, (Washington, D.C. Reagan-National - Seattle/Tacoma Intl), can usually be booked for $258.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to Seattle on time: Japan Airlines (84%), Korean Air (84%), Finnair (83%).

What are the most popular airlines that fly from Washington, D.C. Reagan-National Airport to Seattle?

The most popular airlines flying from Washington, D.C. Reagan-National Airport to Seattle are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

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

Monday is generally a great day to depart. Flying on this day could help you save up to 24%.

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

Flights from Washington, D.C. Reagan-National Airport to Seattle lean towards being more expensive in December. Prices are generally better when you fly from Washington, D.C. Reagan-National Airport to Seattle in September, with the cheapest ticket starting at $189.

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

For a flight from Washington, D.C. Reagan-National to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 9 inbound flights from Washington, D.C. Reagan-National per day. 7 airlines have flights to Seattle/Tacoma Intl from Washington, D.C. Reagan-National on a regular basis.

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

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

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

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

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

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

$143+ Flights from Washington, D.C. Reagan-National Airport to Seattle

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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to Seattle/Tacoma Intl are usually found in September or May, booked 85 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from Reagan-National to Seattle

Round-trip from	$255 (Cheapflightsfares)
One-way from	$143 (Cheapflightsfares)
Popular in	December
Cheapest in	September
Average price	$507
Good round-trip deal	$328 or less
Good one-way deal	$230 or less

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

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One-way flight from Washington, D.C. Reagan-National to Seattle/Tacoma Intl

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Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Seattle/Tacoma Intl.

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Price to beat on a one-way flight from Washington, D.C. Reagan-National to Seattle/Tacoma Intl.

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Find flight deals from Reagan-National to Seattle

Cheapest flights from Reagan-National to Seattle
Explore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Sat 8/237:00 amDCA - SEA

1 stop7h 45mFrontier

Tue 8/266:41 amSEA - DCA

1 stop7h 18mFrontier

Deal found 7/27

$255

Sat 9/205:06 pmDCA - SEA

Nonstop5h 50mHawaiian Airlines

Sat 9/278:35 amSEA - DCA

Nonstop5h 14mHawaiian Airlines

Deal found 7/27

$263

Sat 8/234:59 pmDCA - SEA

Nonstop5h 51mDelta

Thu 8/287:20 amSEA - DCA

Nonstop5h 05mDelta

Deal found 7/28

$297

Wed 9/104:40 pmDCA - SEA

2 stops9h 30mSouthwest

Sat 9/205:55 amSEA - DCA

1 stop6h 45mSouthwest

Deal found 7/28

$302

Tue 9/96:00 pmDCA - SEA

1 stop26h 00mMultiple Airlines

Tue 9/165:20 amSEA - DCA

2 stops13h 39mMultiple Airlines

Deal found 7/26

$316

Sat 8/235:06 pmDCA - SEA

Nonstop5h 50mAlaska Airlines

Tue 8/261:35 pmSEA - DCA

Nonstop5h 09mAlaska Airlines

Deal found 7/28

$317

Best flights from Reagan-National to Seattle
Discover carefully curated flight deals from Reagan-National to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2025.

Sat 8/237:00 amDCA - SEA

1 stop7h 45mFrontier

Tue 8/266:41 amSEA - DCA

1 stop7h 18mFrontier

Deal found 7/27

$255

Sat 9/205:06 pmDCA - SEA

Nonstop5h 50mHawaiian Airlines

Sat 9/278:35 amSEA - DCA

Nonstop5h 14mHawaiian Airlines

Deal found 7/27

$263

Wed 8/204:55 pmDCA - SEA

1 stop8h 55mSouthwest

Tue 8/266:45 amSEA - DCA

2 stops10h 30mSouthwest

Deal found 7/26

$302

Fri 8/224:59 pmDCA - SEA

Nonstop5h 51mDelta

Tue 8/267:20 amSEA - DCA

Nonstop5h 05mDelta

Deal found 7/28

$307

Tue 10/218:00 amDCA - SEA

Nonstop5h 53mAlaska Airlines

Tue 10/211:46 pmSEA - DCA

Nonstop5h 13mAlaska Airlines

Deal found 7/27

$311

Tue 9/96:00 pmDCA - SEA

1 stop26h 00mMultiple Airlines

Tue 9/165:20 amSEA - DCA

2 stops13h 39mMultiple Airlines

Deal found 7/26

$316

Last-minute flights from Reagan-National to Seattle
Discover last-minute flight deals from Reagan-National to Seattle. Data last updated July 28, 2025 and is based on user searches.

Mon 8/46:00 pmDCA - SEA

1 stop9h 34mFrontier

Sat 8/167:48 pmSEA - DCA

1 stop13h 16mFrontier

Deal found 7/27

$278

Tue 8/55:14 pmDCA - SEA

1 stop8h 41mAmerican Airlines

Wed 8/2012:46 amSEA - DCA

1 stop7h 14mAmerican Airlines

Deal found 7/25

$563

Tue 8/54:59 pmDCA - SEA

Nonstop5h 55mDelta

Thu 8/217:20 amSEA - DCA

Nonstop5h 05mDelta

Deal found 7/27

$564

Thu 8/71:00 pmDCA - SEA

1 stop14h 34mMultiple Airlines

Thu 8/141:58 pmSEA - DCA

Nonstop5h 01mMultiple Airlines

Deal found 7/26

$519

Mon 8/185:02 pmDCA - SEA

Nonstop5h 58mMultiple Airlines

Mon 8/256:17 amSEA - DCA

1 stop7h 42mMultiple Airlines

Deal found 7/28

$335

Wed 8/204:55 pmDCA - SEA

1 stop8h 55mSouthwest

Tue 8/266:45 amSEA - DCA

2 stops10h 30mSouthwest

Deal found 7/26

$302

Sat 8/237:00 amDCA - SEA

1 stop7h 45mFrontier

Tue 8/266:41 amSEA - DCA

1 stop7h 18mFrontier

Deal found 7/27

$255

Sat 8/234:59 pmDCA - SEA

Nonstop5h 51mDelta

Wed 8/277:20 amSEA - DCA

Nonstop5h 05mDelta

Deal found 7/28

$277

Sat 8/235:06 pmDCA - SEA

Nonstop5h 50mHawaiian Airlines

Sat 8/308:00 amSEA - DCA

1 stop9h 59mHawaiian Airlines

Deal found 7/27

$309

Sat 8/235:06 pmDCA - SEA

Nonstop5h 50mAlaska Airlines

Tue 8/261:35 pmSEA - DCA

Nonstop5h 09mAlaska Airlines

Deal found 7/28

$317

Sat 8/236:00 pmDCA - SEA

1 stop8h 41mAmerican Airlines

Wed 8/2712:46 amSEA - DCA

1 stop7h 14mAmerican Airlines

Deal found 7/26

$337

One-way flights from Reagan-National to Seattle
Search for one-way flight options from Reagan-National to Seattle. Find affordable one-way fares based on user searches. Data last updated July 28, 2025.

Sun 8/171:00 pmDCA - SEA

1 stop8h 46mFrontier

Deal found 7/28

$143

Mon 8/184:59 pmDCA - SEA

Nonstop5h 51mDelta

Deal found 7/28

$149

Wed 9/104:40 pmDCA - SEA

2 stops9h 30mSouthwest

Deal found 7/28

$154

Sat 10/45:03 pmDCA - SEA

Nonstop5h 55mHawaiian Airlines

Deal found 7/27

$160

Sun 8/315:49 pmDCA - SEA

1 stop7h 40mAlaska Airlines

Deal found 7/26

$178

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 8/23

7:00 am-11:45 am

1 stop7h 45m

Seattle/Tacoma Intl

Tue 8/26

6:41 am-4:59 pm

1 stop7h 18m

$255

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 9/20

5:06 pm-7:56 pm

Nonstop5h 50m

Seattle/Tacoma Intl

Sat 9/27

8:35 am-4:49 pm

Nonstop5h 14m

$263

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Wed 8/20

4:55 pm-10:50 pm

1 stop8h 55m

Seattle/Tacoma Intl

Tue 8/26

6:45 am-8:15 pm

2 stops10h 30m

$302

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Fri 8/22

4:59 pm-7:50 pm

Nonstop5h 51m

Seattle/Tacoma Intl

Tue 8/26

7:20 am-3:25 pm

Nonstop5h 05m

$307

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 9/9

6:00 pm-5:00 pm

1 stop26h 00m

Seattle/Tacoma Intl

Tue 9/16

5:20 am-9:59 pm

2 stops13h 39m

$316

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 8/23

5:06 pm-7:56 pm

Nonstop5h 50m

Seattle/Tacoma Intl

Tue 8/26

1:35 pm-9:44 pm

Nonstop5h 09m

$317

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Mon 8/11

1:00 pm-6:59 pm

1 stop8h 59m

$143

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 8/26

5:49 pm-10:29 pm

1 stop7h 40m

$148

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Mon 8/18

4:59 pm-7:50 pm

Nonstop5h 51m

$149

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Wed 9/10

4:30 pm-11:10 pm

2 stops9h 40m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 13 results

The best insider tips for Washington, D.C. Reagan-National Airport to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Reagan-National Airport to Seattle trip

Airports

DCA

For a stress-free departure, use DCA's Metro stop on the Yellow and Blue lines for easy and affordable access.

SEA

Take the Link light rail from SEA to downtown Seattle for an inexpensive, 40-minute journey with ample luggage space.

Our travel experts

Emily Zemler

Expert on DCA

Brandon Schultz

Expert on SEA

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

Have a flexible travel schedule? Discover the best time to fly to Seattle from Reagan-National 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Seattle

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

The best time to book flights from Washington, D.C. Reagan-National Airport to Seattle is 85 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 Washington, D.C. Reagan-National Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seattle (average of $238). Flying from Washington, D.C. Reagan-National Airport to Seattle in June is currently the most expensive (average of $389). 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 DCA to SEA?

Unlike in the morning, when flights are generally more expensive, you can save up to 30% on flights from Washington, D.C. Reagan-National Airport to Seattle by exploring options for tickets in the evening.

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

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

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

The most flights from DCA to SEA are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

What’s the top layover airport for flights from Washington, D.C. Reagan-National Airport to Seattle?

Chicago (MDW) – chosen by Cheapflights users on 57% of 1-stop itineraries from Washington, D.C. Reagan-National Airport to Seattle on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. Reagan-National Airport to Seattle?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $409.

What’s the fastest layover option from Washington, D.C. Reagan-National Airport to Seattle?

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 29m.

Which airport typically offers the quickest layover for flights from Washington, D.C. Reagan-National Airport to Seattle?

Flights via Chicago (MDW) offer the fastest connection on this route, with an average layover time of 2h 39m.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Washington, D.C. Reagan-National Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Southwest

8.0

Very good

4,237 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Delta

8.0

Very good

7,971 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Hawaiian Airlines

7.8

Good

2,604 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Frontier

5.9

Fair

3,238 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Related info for your journey

What airport do you fly into for flights to Seattle from Washington, D.C. Reagan-National?
For a flight from Washington, D.C. Reagan-National to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 9 inbound flights from Washington, D.C. Reagan-National per day. 7 airlines have flights to Seattle/Tacoma Intl from Washington, D.C. Reagan-National on a regular basis.
What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Seattle round-trip?
According to our current data, Frontier ($255), Hawaiian Airlines ($263), and Southwest ($302) offers the cheapest pricing from Washington, D.C. Reagan-National Airport to Seattle. These flights start at 44% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Seattle one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $143. Delta flights start at $149 while deals on Southwest start at $154 one-way.
What are the most reliable airlines from Washington, D.C. Reagan-National Airport to Seattle?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to Seattle on time: Japan Airlines (84%), Korean Air (84%), Finnair (83%).
What are the cheapest flights from Washington, D.C. Reagan-National Airport to Seattle?
The cheapest flight price from Washington, D.C. Reagan-National Airport to Seattle is $148. On average you can expect to pay $2,402. The most popular route, (Washington, D.C. Reagan-National - Seattle/Tacoma Intl), can usually be booked for $258.
Can I find deals for flights from Reagan-National to Seattle that include hotel bookings?
Yes. In addition to deals on Reagan-National to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Seattle.
Can I find deals for business class flights from Reagan-National to Seattle?
Yes. Cheapflights offers flight deals from Reagan-National to Seattle 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 Washington, D.C. Reagan-National Airport to Seattle?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seattle (average of $238). Flying from Washington, D.C. Reagan-National Airport to Seattle in June is currently the most expensive (average of $389). 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.

See more FAQs

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Lakewood

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Leavenworth

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Shoreline

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Alternative routes for Reagan-National to Seattle

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Other flights from Reagan-National

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Other flights to Seattle

Top 7 airlines flying from Reagan-National to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$135	Average$281	FlexibilityNo cancel fee	On-time62%
Hawaiian Airlines	Cheapest$168	Average$551	FlexibilityNo cancel fee	On-time85%
Delta	Cheapest$245	Average$428	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$276	Average$470	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$282	Average$406	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$304	Average$545	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$306	Average$481	FlexibilityNo cancel fee	On-time63%

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$143+ Cheap flights from Reagan-National (DCA) to Seattle (SEA)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to Seattle/Tacoma Intl are usually found in September or May, booked 85 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from Reagan-National to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Reagan-National to Seattle

Cheapest flights from Reagan-National to SeattleExplore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Explore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Seattle that are best for you.

The best insider tips for Washington, D.C. Reagan-National Airport to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Reagan-National Airport to Seattle trip

Airports

DCA

SEA

Our travel experts

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

Have a flexible travel schedule? Discover the best time to fly to Seattle from Reagan-National with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Seattle. Price data was last updated on July 25, 2025.

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

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

Find hourly flight availability from Reagan-National to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Seattle. Price data was last updated on July 27, 2025.

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

What’s the top layover airport for flights from Washington, D.C. Reagan-National Airport to Seattle?

Share of 1-stop round-trip flights from Washington, D.C. Reagan-National Airport to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Washington, D.C. Reagan-National Airport to Seattle?

Average round-trip fare for 1-stop flights from Washington, D.C. Reagan-National Airport to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Washington, D.C. Reagan-National Airport to Seattle?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. Reagan-National Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Washington, D.C. Reagan-National Airport to Seattle?

Average layover duration for 1-stop one-way flights from Washington, D.C. Reagan-National Airport to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Washington, D.C. Reagan-National Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Seattle. 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 into for flights to Seattle from Washington, D.C. Reagan-National?

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

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

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

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

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

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

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

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

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Alternative routes for Reagan-National to Seattle

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Top 7 airlines flying from Reagan-National to Seattle

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Cheapest flights from Reagan-National to Seattle
Explore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.