Cheap flights from Washington, D.C. (WAS) to Seattle (SEA)

WAS — SEA
Feb 7 — Feb 141

The best prices from Washington, D.C. to Seattle/Tacoma Intl are usually found in February or January, booked 30 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

How to find the cheapest flight from Washington, D.C. (WAS) to Seattle (SEA)

All the information you need to plan the best WAS to SEA flight in 2023: compare Washington, D.C. to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.

WAS - SEA

Price

$261 - $673

SEA

Temperature

41 - 66.2 °F

SEA

Rainfall

0.7 - 6.6 inches

Popular inJuneHigh demand for flights, 34% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 41% potential price drop
Round-trip from$261From Washington, D.C. (WAS) to Seattle/Tacoma Intl
One-way from$99One-way flight from Washington, D.C. (WAS) to Seattle/Tacoma Intl

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

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 23% on the overall cost on flights from Washington, D.C. to Seattle.

How far in advance should I book a flight from Washington, D.C. to Seattle?

Find a great deal and save up to 36% by booking at least 30 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Washington, D.C. to Seattle within the next two weeks, with the cheapest ticket starting at $536.

What is the cheapest month to fly from Washington, D.C. to Seattle?

February can be a great time to fly to Seattle from Washington, D.C. with a flight ticket averaging about $444. Cheapflights users have found deals in the month of February for as cheap as $187. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Washington, D.C. to Seattle (WAS - SEA)?

It’s typically best to fly out from Washington, D.C. to Seattle at noon. Doing so could potentially save you 18% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from Washington, D.C. to Seattle in February, March 2023

The best prices found for WAS to SEA flights for February, March
Feb 7 - Feb 14
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

18h 16m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 56m
$157

Frontier

Pick Dates

Deal found 1/30

Mar 1 - Mar 2
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

24h 44m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

20h 50m
$166

Frontier

Pick Dates

Deal found 2/1

Mar 1 - Mar 8
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

25h 18m
SEA

Seattle/Tacoma Intl

DCA

Washington, D.C. Reagan-National

1 stop

14h 45m
$166

Frontier

Pick Dates

Deal found 1/30

Washington, D.C. to Seattle 2023 flight deals

Cheap flights to Seattle from Washington, D.C. found for this year
Feb 7 - Feb 14
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

18h 16m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 56m
$157

Frontier

Pick Dates

Deal found 1/30

Mar 1 - Mar 2
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

24h 44m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

20h 50m
$166

Frontier

Pick Dates

Deal found 2/1

Mar 1 - Mar 8
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

25h 18m
SEA

Seattle/Tacoma Intl

DCA

Washington, D.C. Reagan-National

1 stop

14h 45m
$166

Frontier

Pick Dates

Deal found 1/30

Cheap Frontier flights from Washington, D.C. to Seattle

Feb 7 - Feb 14
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

18h 16m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 56m
$157

Frontier

Pick Dates

Deal found 1/30

Mar 1 - Mar 8
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

25h 18m
SEA

Seattle/Tacoma Intl

DCA

Washington, D.C. Reagan-National

1 stop

14h 45m
$166

Frontier

Pick Dates

Deal found 1/30

Mar 1 - Mar 7
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

24h 44m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 34m
$167

Frontier

Pick Dates

Deal found 1/30

  • One of the most popular airlines traveling from Washington, D.C. to Seattle is Frontier. Flights from Frontier traveling this route typically cost $481.89 RT. This price is typically 33% cheaper than other airlines that offer Washington, D.C. to Seattle flights. When booking this route, the cheapest RT price found was $134. Washington, D.C. Dulles Intl Airport is the most common Washington, D.C. airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Washington, D.C. to Seattle, Frontier flights are 27% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Washington, D.C. to Seattle

Mar 1 - Mar 8
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

2 stops

21h 08m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

2 stops

17h 05m
$185

Spirit Airlines

Pick Dates

Deal found 1/30

Feb 21 - Mar 7
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

2 stops

31h 53m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

16h 15m
$195

Spirit Airlines

Pick Dates

Deal found 1/31

Feb 28 - Mar 7
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

10h 53m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

16h 15m
$197

Spirit Airlines

Pick Dates

Deal found 1/31

  • If you’re traveling from Washington, D.C. to Seattle, one of the more common airlines traveling that route is Spirit Airlines. Washington, D.C. to Seattle flights are typically 35% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $526.36 RT. The cheapest Spirit Airlines flight found for this route was $159. When traveling from Washington, D.C. to Seattle on Spirit Airlines, the most popular airport to depart from is Washington, D.C. Dulles Intl Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from Washington, D.C. to Seattle, Spirit Airlines flights are 25% more popular than any other airline flying that same route.

Non-stop flights to Seattle from Washington, D.C.

Save time with Washington, D.C. to Seattle direct flight deals
Feb 21 - Feb 28
IAD

Washington, D.C. Dulles Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 03m
SEA

Seattle/Tacoma Intl

IAD

Washington, D.C. Dulles Intl

Nonstop

5h 00m
$196

Alaska Airlines

Pick Dates

Deal found 1/31

Feb 22 - Mar 4
IAD

Washington, D.C. Dulles Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 08m
SEA

Seattle/Tacoma Intl

IAD

Washington, D.C. Dulles Intl

Nonstop

4h 54m
$197

Multiple Airlines

Pick Dates

Deal found 1/31

Feb 15 - Feb 21
IAD

Washington, D.C. Dulles Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 08m
SEA

Seattle/Tacoma Intl

IAD

Washington, D.C. Dulles Intl

Nonstop

4h 54m
$198

Multiple Airlines

Pick Dates

Deal found 1/30

Last minute flights from Washington, D.C. to Seattle

Late deals on return flights to Seattle from Washington, D.C., departing today and this week
Feb 7 - Feb 14
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

18h 16m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 56m
$157

Frontier

Pick Dates

Deal found 1/30

Feb 7 - Feb 9
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

18h 16m
SEA

Seattle/Tacoma Intl

BWI

Baltimore/Washington

1 stop

14h 02m
$166

Frontier

Pick Dates

Deal found 1/30

Feb 7 - Feb 9
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

11h 16m
SEA

Seattle/Tacoma Intl

DCA

Washington, D.C. Reagan-National

1 stop

15h 06m
$166

Frontier

Pick Dates

Deal found 1/30

One-way flights to Seattle from Washington, D.C.

The cheapest one-way flights from Washington, D.C. to Seattle
Mar 4
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

20h 31m
$78

Frontier

Pick Dates

Deal found 1/31

Feb 7
DCA

Washington, D.C. Reagan-National

SEA

Seattle/Tacoma Intl

1 stop

11h 16m
$81

Frontier

Pick Dates

Deal found 1/30

May 3
BWI

Baltimore/Washington

SEA

Seattle/Tacoma Intl

1 stop

11h 13m
$82

Frontier

Pick Dates

Deal found 1/30

Reviews of Airlines Servicing Seattle

Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

Alaska Airlines
8.0
Very good
1,360 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

Delta
7.9
Good
2,043 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

JetBlue
7.7
Good
375 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

United Airlines
7.6
Good
1,184 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

American Airlines
7.4
Good
1,668 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

We had to plan a last minute trip with our three young children from Kahului Maui to Cleveland Ohio due to a death in the family. This meant seating selection was scarce. Even though Alaska Airlines was the more expensive option, we booked with them upon reviewing their family seating policy with confidence they would take care of us. Grateful we were all able to sit together… however the very last row in the back of the plane, pressed up against the bathrooms, on an overnight flight with 3 small children was the least ideal situation. The chairs didn’t recline, every time someone flushed the toilet/came in/out of the bathroom we heard the door slam. You know the sound. The overall noise in the back of the plane is very intense. Bright lights from the flight attendants in the kitchen. The seats were also not clean, old chocolate from previous people that melted all over the back of our pants. Did I mention we had another 5 hour flight after this one? We didn’t complain though. I just told my husband I’ll write a review. Look, I know it’s first come first served but if you’re gonna do our family like that, the tickets should’ve come at a discount. Our second leg was much better… but the service needs to be consistent and reliable to be my go to airline company.

Related info for your journey

Useful info, stats and facts about Washington, D.C. to Seattle flights.

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

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Seattle. 9 airlines have flights to Seattle/Tacoma Intl from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 14 inbound flights from Washington, D.C. per day.

Which airlines flying from Washington, D.C. to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Alaska Airlines, United Airlines, and Delta are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Washington, D.C. to Seattle for under $200 on Cheapflights?

Yes, there are multiple flights from Washington, D.C. to Seattle for under $200. The cheapest flight booked recently is on Frontier for just $166, but on average you can expect to pay $173.

Are there nonstop flights from Washington, D.C. to Seattle for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington, D.C. to Seattle under $200. A good price for a nonstop flight from Washington, D.C. to Seattle is less than $226.

Are there last-minute flights available from Washington, D.C. to Seattle for under $200?

There are currently 20+ open flights from Washington, D.C. to Seattle within the next 7 days for less than $200.

What days are nonstop flights available from Washington, D.C. to Seattle?

Nonstop flights are available for this route on the following days: Sunday, Tuesday, Thursday, Friday, Saturday.

How many flights depart from Washington, D.C. to Seattle on average per day?

On average 14 flights depart from Washington, D.C. to Seattle per day.
Morning (6am - Noon) - 21% of flight departures
Afternoon (Noon - 6pm) - 71% of flight departures
Evening (6pm - Midnight) - 7% of flight departures

How long is the flight from Washington, D.C. to Seattle?

There are many flights that can get you from Washington, D.C. to Seattle in 21h 08m. Fly via Frontier or Spirit Airlines to get the fastest option. There are 2313 mi between Washington, D.C. and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

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

According to our current data, Frontier ($166), and Spirit Airlines ($185) offers the cheapest pricing from Washington, D.C. to Seattle. You may be able to fly from Washington, D.C. to Seattle for 62% less than the average price by searching for these airlines.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $78. Users have also found prices from $87 and $99 on Spirit Airlines and Alaska Airlines, respectively.

What are the most popular routes from Washington, D.C. to Seattle?

The most popular flight routes from Washington, D.C. to Seattle are Washington, D.C. Dulles Intl - Seattle/Tacoma Intl, Washington, D.C. Reagan-National - Seattle/Tacoma Intl and Baltimore/Washington - Seattle/Tacoma Intl.

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

When booking a flight from Washington, D.C. to Seattle, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

What are the most reliable airlines from Washington, D.C. to Seattle?

Consider KLM (100%), Virgin Atlantic (100%) or Austrian Airlines (86%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Seattle.

What are the cheapest flights from Washington, D.C. to Seattle?

Looking for the cheapest flight from Washington, D.C. to Seattle? While on average our users pay $1,142, our data indicates the cheapest price to be $99. The most popular route (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl), is priced around $197.

Top 7 airlines flying from Washington, D.C. to Seattle

The chart below displays the airlines Cheapflights users traveling from Washington, D.C. to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$16Average$23FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$126Average$367FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$134Average$482FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$159Average$526FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
JetBlueCheapest$162Average$324FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
United AirlinesCheapest$198Average$519FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$227Average$450FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Washington, D.C. to Seattle

See what time of day planes typically take off from Washington, D.C. to Seattle
0%of flight departuresEarly morningMidnight to 6 am
44%of flight departuresMorning6 am to noon
56%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Washington, D.C. to Seattle

See how many times per day planes take to the skies headed from Washington, D.C. to Seattle
Sunday15daily flights
Monday9daily flights
Tuesday10daily flights
Wednesday15daily flights
Thursday23daily flights
Friday10daily flights
Saturday18daily flights
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