How many flights depart from District of Columbia to Seattle on average per week?

222 flights are operational weekly from District of Columbia to Seattle as of August 2025. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.

What is the cheapest airline that flies from District of Columbia to Seattle/Tacoma Intl?

Southwest, Frontier, and American Airlines are the most popular carriers operating from District of Columbia to Seattle/Tacoma Intl

What airlines fly to Seattle?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to Seattle from District of Columbia according to our data. Alaska Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

How many flights depart from District of Columbia to Seattle on average per day?

As of August 2025, 31 flights take off from District of Columbia and land in Seattle each day. The most common flight departure time for this route is 5:00PM, with 55% of daily flights taking off at noon.

When did momondo last update prices for flights from District of Columbia to Seattle/Tacoma Intl Airport?

Prices for flights from District of Columbia to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from District of Columbia to Seattle/Tacoma Intl Airport?

The number of operators available for flights from District of Columbia to Seattle/Tacoma Intl Airport is 8 as of August 2025.

How old do you have to be to fly from District of Columbia to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$93 Cheap Flights from District of Columbia to Seattle in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from District of Columbia to Seattle

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:35 pm - 9:40 pmDCA-SEA

9h 05m1 stop

11:10 pm - 8:55 amSEA-DCA

6h 45m1 stop

$186Southwest

Find Deal

Tue, Aug 26 - Sat, Aug 30

12:45 pm - 7:55 pmDCA-SEA

10h 10m1 stop

5:55 am - 6:20 pmSEA-DCA

9h 25m1 stop

$192Southwest

Find Deal

Sat, Sep 6 - Sat, Sep 13

4:40 pm - 10:04 pmDCA-SEA

8h 24m1 stop

6:05 am - 6:27 pmSEA-DCA

9h 22m1 stop

$197American Airlines

Find Deal

Sat, Sep 6 - Sat, Sep 13

11:47 am - 7:09 pmIAD-SEA

10h 22m1 stop

11:38 pm - 10:07 amSEA-IAD

7h 29m1 stop

$233American Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 23

1:00 pm - 8:51 pmDCA-SEA

10h 51m1 stop

7:00 am - 9:59 pmSEA-DCA

11h 59m1 stop

$235Frontier

Find Deal

Sat, Aug 30 - Sat, Sep 6

1:00 pm - 8:51 pmDCA-SEA

10h 51m1 stop

6:41 am - 9:59 pmSEA-DCA

12h 18m1 stop

$236Frontier

Find Deal

Sat, Aug 23 - Wed, Aug 27

8:00 am - 10:45 amDCA-SEA

5h 45mnonstop

2:20 pm - 8:59 pmSEA-DCA

27h 39m1 stop

$238Alaska Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 9

8:00 am - 10:45 amDCA-SEA

5h 45mnonstop

2:20 pm - 8:59 pmSEA-DCA

27h 39m1 stop

$241Alaska Airlines

Find Deal

Wed, Sep 3 - Wed, Sep 3

6:09 pm - 8:51 pmIAD-SEA

5h 42mnonstop

4:20 pm - 12:23 amSEA-IAD

5h 03mnonstop

$249Hawaiian Airlines

Find Deal

Sat, Aug 30 - Sat, Sep 6

9:59 am - 4:51 pmDCA-SEA

9h 52m1 stop

5:20 am - 4:06 pmSEA-DCA

7h 46m1 stop

$251Hawaiian Airlines

Find Deal

Sat, Sep 20 - Sat, Sep 27

American Airlines flights from District of Columbia to Seattle

Our best American Airlines deals on District of Columbia to Seattle flight tickets

American Airlines

Sep 6

DCA4:40 pmWashington, D.C. Reagan-National

8h 24m

1 stop

SEA10:04 pmSeattle/Tacoma Intl

Sep 13

SEA6:05 amSeattle/Tacoma Intl

9h 22m

1 stop

DCA6:27 pmWashington, D.C. Reagan-National

$197

Find similar

American Airlines

Sep 16

DCA10:20 amWashington, D.C. Reagan-National

9h 33m

1 stop

SEA4:53 pmSeattle/Tacoma Intl

Sep 20

SEA5:26 amSeattle/Tacoma Intl

7h 53m

1 stop

DCA4:19 pmWashington, D.C. Reagan-National

$233

Find similar

American Airlines

Sep 22

IAD2:21 pmWashington, D.C. Dulles Intl

8h 38m

1 stop

SEA7:59 pmSeattle/Tacoma Intl

Sep 30

SEA11:38 pmSeattle/Tacoma Intl

7h 29m

1 stop

IAD10:07 amWashington, D.C. Dulles Intl

$255

Find similar

Alaska Airlines flights from District of Columbia to Seattle

Our best Alaska Airlines deals on District of Columbia to Seattle flight tickets

Alaska Airlines

Sep 9

DCA8:00 amWashington, D.C. Reagan-National

5h 45m

SEA10:45 amSeattle/Tacoma Intl

Sep 9

SEA2:20 pmSeattle/Tacoma Intl

27h 39m

1 stop

DCA8:59 pmWashington, D.C. Reagan-National

$238

Find similar

Alaska Airlines

Sep 3

DCA8:00 amWashington, D.C. Reagan-National

5h 45m

SEA10:45 amSeattle/Tacoma Intl

Sep 3

SEA2:20 pmSeattle/Tacoma Intl

27h 39m

1 stop

DCA8:59 pmWashington, D.C. Reagan-National

$241

Find similar

Alaska Airlines

Sep 6

IAD7:00 amWashington, D.C. Dulles Intl

5h 40m

SEA9:40 amSeattle/Tacoma Intl

Sep 9

SEA11:30 pmSeattle/Tacoma Intl

5h 03m

IAD7:33 amWashington, D.C. Dulles Intl

$253

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia 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

Tue 8/26

3:35 pm-9:40 pm

1 stop9h 05m

Seattle/Tacoma Intl

Sat 8/30

11:10 pm-8:55 am

1 stop6h 45m

$186

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 9/6

12:45 pm-7:55 pm

1 stop10h 10m

Seattle/Tacoma Intl

Sat 9/13

5:55 am-6:20 pm

1 stop9h 25m

$192

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 9/6

4:40 pm-10:04 pm

1 stop8h 24m

Seattle/Tacoma Intl

Sat 9/13

6:05 am-6:27 pm

1 stop9h 22m

$197

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 9/9

11:47 am-7:09 pm

1 stop10h 22m

Seattle/Tacoma Intl

Tue 9/23

11:38 pm-10:07 am

1 stop7h 29m

$233

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 8/30

1:00 pm-8:51 pm

1 stop10h 51m

Seattle/Tacoma Intl

Sat 9/6

7:00 am-9:59 pm

1 stop11h 59m

$235

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 8/23

1:00 pm-8:51 pm

1 stop10h 51m

Seattle/Tacoma Intl

Wed 8/27

6:41 am-9:59 pm

1 stop12h 18m

$236

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 9/9

8:00 am-10:45 am

Nonstop5h 45m

Seattle/Tacoma Intl

Tue 9/9

2:20 pm-8:59 pm

1 stop27h 39m

$238

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Wed 9/3

8:00 am-10:45 am

Nonstop5h 45m

Seattle/Tacoma Intl

Wed 9/3

2:20 pm-8:59 pm

1 stop27h 39m

$241

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sat 8/30

6:09 pm-8:51 pm

Nonstop5h 42m

Seattle/Tacoma Intl

Sat 9/6

4:20 pm-12:23 am

Nonstop5h 03m

$249

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 9/20

9:59 am-4:51 pm

1 stop9h 52m

Seattle/Tacoma Intl

Sat 9/27

5:20 am-4:06 pm

1 stop7h 46m

$251

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from District of Columbia to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Seattle?

In general, September is the cheapest month to fly from District of Columbia to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $337. If you don’t want to visit Seattle in September, then you should wait until October to fly from District of Columbia, when ticket prices are also cheap, with an average price of $367.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from District of Columbia is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $440. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from District of Columbia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $569.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from District of Columbia in the evening is the least expensive time of day to depart. momondo users have found prices as low as $420 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $518. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest District of Columbia to Seattle/Tacoma Intl flight route?

Fly from Baltimore/Washington to Seattle/Tacoma Intl for the best District of Columbia - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from District of Columbia for as low as $333 on momondo.

What cabin class options are available on District of Columbia to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on District of Columbia to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap District of Columbia to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Seattle

Best Price Found	$93
Fastest flight time	5h 40m
Direct flights	Every day
Airports in Seattle	1 airport

The best one-way flight to Seattle from District of Columbia in the past 72 hours is $93. The best round-trip flight deal from District of Columbia to Seattle found on momondo in the last 72 hours is $186.

The fastest flight from District of Columbia to Seattle takes 5h 40m

Direct flights go from District of Columbia to Seattle every day.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

Search flight deals

When did momondo last update prices for flights from District of Columbia to Seattle/Tacoma Intl Airport?
Prices for flights from District of Columbia to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from District of Columbia to Seattle/Tacoma Intl Airport?
The number of operators available for flights from District of Columbia to Seattle/Tacoma Intl Airport is 8 as of August 2025.
How old do you have to be to fly from District of Columbia to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from District of Columbia to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from District of Columbia to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets) (22.98% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (22.73%), Boeing 737-900 Passenger/BBJ3 (winglets) (16.30%), and Boeing 737 (10.48%).

Best airlines flying from District of Columbia to Seattle

Compare and see reviews for airlines that fly from District of Columbia to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $103	Free Cancellation	Rating 6.3 8,055 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $111	Free Cancellation	Rating 5.8 3,231 reviews	Search Frontier flights
Sun Country Air	PriceFrom $144	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
Hawaiian Airlines	PriceFrom $168	Free Cancellation	Rating 7.8 2,631 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $204	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
American Airlines	PriceFrom $206	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $261	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $263	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
United Airlines	PriceFrom $276	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Olympia

Renton

Kent

Federal Way

Lynnwood

Puyallup

Marysville

Tukwila

Kirkland

Lakewood

Fife

Cle Elum

Shoreline

Centralia

Westport

Redmond

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Seattle?

It is quick and easy to find District of Columbia to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from District of Columbia to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for District of Columbia to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from District of Columbia to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of District of Columbia to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 8/12

Tue 8/19

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Cheap flights from District of Columbia to Seattle from $93

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Seattle departing on 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from District of Columbia to Seattle

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

American Airlines flights from District of Columbia to Seattle

Our best American Airlines deals on District of Columbia to Seattle flight tickets

Alaska Airlines flights from District of Columbia to Seattle

Our best Alaska Airlines deals on District of Columbia to Seattle flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to Seattle that are best for you.

See travel insights to Seattle from

How to get the cheapest flight ticket from District of Columbia to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

What is the cheapest District of Columbia to Seattle/Tacoma Intl flight route?

Fly from Baltimore/Washington to Seattle/Tacoma Intl for the best District of Columbia - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

What cabin class options are available on District of Columbia to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on District of Columbia to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

What is the cheapest airline that flies from District of Columbia to Seattle/Tacoma Intl?

Southwest, Frontier, and American Airlines are the most popular carriers operating from District of Columbia to Seattle/Tacoma Intl

What airlines fly to Seattle?

How many flights depart from District of Columbia to Seattle on average per day?

As of August 2025, 31 flights take off from District of Columbia and land in Seattle each day. The most common flight departure time for this route is 5:00PM, with 55% of daily flights taking off at noon.

How many flights depart from District of Columbia to Seattle on average per week?

222 flights are operational weekly from District of Columbia to Seattle as of August 2025. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.

Cheap District of Columbia to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Seattle

Best Price Found

Fastest flight time

Direct flights

Airports in Seattle

When did momondo last update prices for flights from District of Columbia to Seattle/Tacoma Intl Airport?

How many operators does momondo search for flights from District of Columbia to Seattle/Tacoma Intl Airport?

How old do you have to be to fly from District of Columbia to Seattle/Tacoma Intl Airport?

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

What is the most popular plane model from District of Columbia to Seattle?

Best airlines flying from District of Columbia to Seattle

Compare and see reviews for airlines that fly from District of Columbia to Seattle with momondo

Traveling to a place near Seattle?

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Seattle?

Can I find flights from District of Columbia to Seattle with flexible booking policies on momondo?

How can momondo help me find flights from District of Columbia to Seattle?

I’m not ready to book a flight from District of Columbia to Seattle right now. Can momondo alert me if prices change?

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington