What are the cheapest airlines to fly from District of Columbia to Seattle one-way?

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $144. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from District of Columbia to Seattle for a low price.

What are the cheapest flights from District of Columbia to Seattle?

The cheapest flight price from District of Columbia to Seattle is $143. On average you can expect to pay $869. The most popular route, (Washington, D.C. Reagan-National - Seattle/Tacoma Intl), can usually be booked for $221.

What are the most reliable airlines from District of Columbia 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 District of Columbia to Seattle on time: Iberia (100%), Singapore Airlines (100%), Japan Airlines (87%).

What are the most popular airlines that fly from District of Columbia to Seattle?

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

How far in advance should I book a flight from District of Columbia to Seattle?

To save on the cost of your flight from District of Columbia to Seattle, book at least 31 days before your planned departure. Booking around this time can save you about 72% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $556 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $621.

What is the cheapest month to fly from District of Columbia to Seattle?

Our data shows that September tends to be the cheapest month to fly to Seattle from District of Columbia. Users have commonly found prices around $412 for the month, but tickets can be as low as $203. Due to multiple factors, prepare for potentially higher prices in December.

What airport do you fly into for flights to Seattle from District of Columbia?

Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from District of Columbia. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Can I find deals for flights from District of Columbia to Seattle that include hotel bookings?

Yes. In addition to deals on District of Columbia to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from District of Columbia to Seattle?

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

Can I find deals for business class flights from District of Columbia to Seattle?

Yes. Cheapflights offers flight deals from District of Columbia 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.

$144+ Flights from District of Columbia to Seattle

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Cheap flight deals from District of Columbia to Seattle

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$257 (United Airlines)
One-way from	$144 (Alaska Airlines)
Popular in	December
Cheapest in	September
Average price	$392
Good round-trip deal	$308 or less
Good one-way deal	$192 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seattle/Tacoma Intl flights.

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From District of Columbia to Seattle/Tacoma Intl

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One-way flight from District of Columbia to Seattle/Tacoma Intl

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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from District of Columbia to Seattle/Tacoma Intl.

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Price to beat on a one-way flight from District of Columbia to Seattle/Tacoma Intl.

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Find flight deals from District of Columbia to Seattle

Cheapest flights from District of Columbia to Seattle
Explore the most affordable flight options available from District of Columbia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Tue 5/276:48 amIAD - SEA

1 stop7h 44mUnited Airlines

Tue 6/312:44 pmSEA - IAD

1 stop7h 06mUnited Airlines

Deal found 4/29

$257

Tue 5/276:25 amDCA - SEA

1 stop8h 07mUnited Airlines

Tue 6/311:37 pmSEA - DCA

1 stop7h 50mUnited Airlines

Deal found 4/29

$257

Sat 5/319:00 amIAD - SEA

Nonstop5h 39mMultiple Airlines

Sun 6/13:11 pmSEA - IAD

1 stop11h 47mMultiple Airlines

Deal found 4/29

$258

Thu 5/156:00 pmDCA - SEA

1 stop9h 44mFrontier

Mon 5/196:00 amSEA - DCA

1 stop7h 59mFrontier

Deal found 4/29

$258

Fri 5/97:45 amIAD - SEA

1 stop13h 17mFrontier

Fri 5/233:11 pmSEA - IAD

1 stop11h 44mFrontier

Deal found 4/29

$260

Thu 5/296:00 pmDCA - SEA

1 stop9h 37mMultiple Airlines

Tue 6/31:48 pmSEA - DCA

Nonstop5h 11mMultiple Airlines

Deal found 4/29

$263

Sat 5/246:15 pmIAD - SEA

Nonstop5h 45mAlaska Airlines

Tue 5/274:00 pmSEA - IAD

Nonstop4h 59mAlaska Airlines

Deal found 4/29

$267

Tue 5/274:59 pmDCA - SEA

Nonstop5h 51mDelta

Tue 6/37:35 amSEA - DCA

Nonstop5h 14mDelta

Deal found 4/29

$267

Tue 5/275:00 pmDCA - SEA

Nonstop5h 56mAlaska Airlines

Tue 6/31:48 pmSEA - DCA

Nonstop5h 11mAlaska Airlines

Deal found 4/28

$277

Sat 5/319:59 amDCA - SEA

1 stop9h 49mHawaiian Airlines

Sat 6/71:48 pmSEA - DCA

Nonstop5h 11mHawaiian Airlines

Deal found 4/29

$280

Sat 5/317:45 amIAD - SEA

Nonstop5h 48mDelta

Sun 6/19:50 pmSEA - IAD

Nonstop5h 02mDelta

Deal found 4/29

$287

Mon 6/231:22 pmIAD - SEA

1 stop12h 28mSun Country Air

Fri 7/411:59 pmSEA - IAD

1 stop8h 44mSun Country Air

Deal found 4/29

$335

Best flights from District of Columbia to Seattle
Discover carefully curated flight deals from District of Columbia to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2025.

Tue 5/276:48 amIAD - SEA

1 stop7h 44mUnited Airlines

Tue 6/312:44 pmSEA - IAD

1 stop7h 06mUnited Airlines

Deal found 4/29

$257

Mon 5/58:01 amIAD - SEA

1 stop12h 59mFrontier

Fri 5/96:52 pmSEA - IAD

1 stop8h 39mFrontier

Deal found 4/29

$258

Tue 5/131:00 pmDCA - SEA

1 stop13h 49mMultiple Airlines

Wed 6/41:48 pmSEA - DCA

Nonstop5h 11mMultiple Airlines

Deal found 4/29

$258

Sat 5/246:15 pmIAD - SEA

Nonstop5h 45mAlaska Airlines

Tue 5/274:00 pmSEA - IAD

Nonstop4h 59mAlaska Airlines

Deal found 4/29

$267

Tue 5/274:59 pmDCA - SEA

Nonstop5h 51mDelta

Tue 6/37:35 amSEA - DCA

Nonstop5h 14mDelta

Deal found 4/29

$267

Sat 5/319:59 amDCA - SEA

1 stop9h 49mHawaiian Airlines

Sat 6/71:48 pmSEA - DCA

Nonstop5h 11mHawaiian Airlines

Deal found 4/29

$280

Mon 6/231:22 pmIAD - SEA

1 stop12h 28mSun Country Air

Fri 7/411:59 pmSEA - IAD

1 stop8h 44mSun Country Air

Deal found 4/29

$335

Fri 6/135:59 pmDCA - SEA

1 stop9h 18mAmerican Airlines

Fri 6/206:24 amSEA - DCA

1 stop9h 03mAmerican Airlines

Deal found 4/29

$358

Tue 7/85:35 pmIAD - SEA

1 stop10h 40mSouthwest

Wed 7/168:50 amSEA - IAD

2 stops10h 55mSouthwest

Deal found 4/28

$362

Mon 6/161:45 pmDCA - SEA

1 stop11h 08mJetBlue

Mon 6/239:14 pmSEA - DCA

1 stop10h 29mJetBlue

Deal found 4/29

$414

Tue 5/271:00 pmDCA - SEA

1 stop8h 53mUnited Airlines

Tue 6/311:50 pmSEA - DCA

1 stop7h 07mUnited Airlines

Deal found 4/29

$257

Thu 5/296:00 pmDCA - SEA

1 stop9h 37mFrontier

Sun 6/86:25 amSEA - DCA

1 stop7h 32mFrontier

Deal found 4/29

$262

Last-minute flights from District of Columbia to Seattle
Discover last-minute flight deals from District of Columbia to Seattle. Data last updated April 30, 2025 and is based on user searches.

Mon 5/58:01 amIAD - SEA

1 stop12h 59mFrontier

Fri 5/96:52 pmSEA - IAD

1 stop8h 39mFrontier

Deal found 4/29

$258

Tue 5/61:00 pmDCA - SEA

1 stop13h 49mMultiple Airlines

Sun 5/188:30 amSEA - DCA

Nonstop5h 14mMultiple Airlines

Deal found 4/29

$399

Tue 5/66:30 amIAD - SEA

Nonstop5h 43mAlaska Airlines

Wed 5/78:10 amSEA - IAD

Nonstop5h 08mAlaska Airlines

Deal found 4/29

$423

Tue 5/65:38 pmDCA - SEA

Nonstop5h 57mAlaska Airlines

Tue 6/31:48 pmSEA - DCA

Nonstop5h 11mAlaska Airlines

Deal found 4/29

$473

Tue 5/65:07 pmIAD - SEA

1 stop8h 50mAmerican Airlines

Wed 6/41:30 pmSEA - IAD

1 stop7h 32mAmerican Airlines

Deal found 4/29

$483

Tue 5/68:00 amDCA - SEA

Nonstop5h 40mHawaiian Airlines

Wed 6/41:48 pmSEA - DCA

Nonstop5h 11mHawaiian Airlines

Deal found 4/29

$493

Wed 5/71:00 pmDCA - SEA

1 stop13h 49mFrontier

Tue 5/276:25 amSEA - DCA

1 stop12h 34mFrontier

Deal found 4/29

$300

Wed 5/76:30 amIAD - SEA

Nonstop5h 43mHawaiian Airlines

Wed 6/1111:30 pmSEA - IAD

Nonstop5h 06mHawaiian Airlines

Deal found 4/29

$463

Wed 5/710:20 amIAD - SEA

1 stop14h 37mUnited Airlines

Wed 5/2810:15 pmSEA - IAD

Nonstop4h 57mUnited Airlines

Deal found 4/29

$510

Wed 5/74:59 pmDCA - SEA

Nonstop5h 51mDelta

Tue 6/37:35 amSEA - DCA

Nonstop5h 14mDelta

Deal found 4/29

$513

Wed 5/77:05 amIAD - SEA

1 stop9h 39mDelta

Sat 6/79:50 pmSEA - IAD

Nonstop5h 02mDelta

Deal found 4/29

$523

Fri 5/97:45 amIAD - SEA

1 stop13h 17mMultiple Airlines

Mon 5/1211:40 pmSEA - IAD

Nonstop5h 03mMultiple Airlines

Deal found 4/28

$359

One-way flights from District of Columbia to Seattle
Search for one-way flight options from District of Columbia to Seattle. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Wed 5/216:30 amIAD - SEA

Nonstop5h 40mAlaska Airlines

Deal found 4/28

$144

Sat 5/245:48 pmIAD - SEA

Nonstop5h 53mUnited Airlines

Deal found 4/28

$148

Tue 6/176:13 pmIAD - SEA

Nonstop5h 47mHawaiian Airlines

Deal found 4/29

$149

Tue 5/275:00 pmDCA - SEA

Nonstop5h 56mHawaiian Airlines

Deal found 4/29

$149

Sat 5/317:25 amDCA - SEA

2 stops14h 07mUnited Airlines

Deal found 4/29

$155

Mon 6/3012:28 pmIAD - SEA

1 stop13h 22mSun Country Air

Deal found 4/29

$158

Thu 5/158:25 amIAD - SEA

3 stops18h 45mMultiple Airlines

Deal found 4/29

$161

Tue 6/244:40 pmDCA - SEA

Nonstop5h 58mDelta

Deal found 4/29

$179

Wed 6/47:50 amIAD - SEA

2 stops11h 35mSouthwest

Deal found 4/29

$184

Fri 7/46:58 pmDCA - SEA

1 stop16h 06mAlaska Airlines

Deal found 4/29

$184

Sun 5/117:31 amIAD - SEA

1 stop13h 29mFrontier

Deal found 4/27

$186

Tue 5/276:00 pmDCA - SEA

1 stop8h 27mFrontier

Deal found 4/29

$198

Cheapflights 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

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 5/27

6:48 am-11:32 am

1 stop7h 44m

Seattle/Tacoma Intl

Tue 6/3

12:44 pm-10:50 pm

1 stop7h 06m

$257

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 5/27

1:00 pm-6:53 pm

1 stop8h 53m

Seattle/Tacoma Intl

Tue 6/3

11:50 pm-9:57 am

1 stop7h 07m

$257

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Mon 5/12

7:45 am-6:00 pm

1 stop13h 15m

Seattle/Tacoma Intl

Wed 5/21

11:30 pm-7:36 am

Nonstop5h 06m

$258

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Fri 5/16

6:00 pm-12:44 am

1 stop9h 44m

Seattle/Tacoma Intl

Mon 5/19

6:00 am-9:59 pm

1 stop12h 59m

$258

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 5/9

7:45 am-6:02 pm

1 stop13h 17m

Seattle/Tacoma Intl

Fri 5/23

3:11 pm-5:55 am

1 stop11h 44m

$260

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Thu 5/29

6:00 pm-12:37 am

1 stop9h 37m

Seattle/Tacoma Intl

Tue 6/3

1:48 pm-9:59 pm

Nonstop5h 11m

$263

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sat 5/24

6:15 pm-9:00 pm

Nonstop5h 45m

Seattle/Tacoma Intl

Tue 5/27

4:00 pm-11:59 pm

Nonstop4h 59m

$267

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 5/27

4:59 pm-7:50 pm

Nonstop5h 51m

Seattle/Tacoma Intl

Tue 6/3

7:35 am-3:49 pm

Nonstop5h 14m

$267

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 5/27

5:00 pm-7:56 pm

Nonstop5h 56m

Seattle/Tacoma Intl

Tue 6/3

1:48 pm-9:59 pm

Nonstop5h 11m

$277

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 5/31

9:59 am-4:48 pm

1 stop9h 49m

Seattle/Tacoma Intl

Sat 6/7

1:48 pm-9:59 pm

Nonstop5h 11m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 35 results

Best time to book a flight from District of Columbia to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from District of Columbia 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 District of Columbia to Seattle

What is the cheapest month to book a flight from District of Columbia to Seattle?

Currently, January is the cheapest month in which you can book a flight from District of Columbia to Seattle (average of $238). Flying from District of Columbia to Seattle in July is currently the most expensive (average of $405). 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 DC to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to Seattle as you normally would.

Weekly flight availability from District of Columbia to Seattle

The most flights from USDC to SEA are scheduled on a Tuesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Seattle by month

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.

Temperature in Seattle by month

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).

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines, Southwest and Delta from District of Columbia to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,968 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,295 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,936 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,406 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,968 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What airport do you fly into for flights to Seattle from District of Columbia?
Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from District of Columbia. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines to fly from District of Columbia to Seattle one-way?
The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $144. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from District of Columbia to Seattle for a low price.
What are the most reliable airlines from District of Columbia 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 District of Columbia to Seattle on time: Iberia (100%), Singapore Airlines (100%), Japan Airlines (87%).
What are the cheapest flights from District of Columbia to Seattle?
The cheapest flight price from District of Columbia to Seattle is $143. On average you can expect to pay $869. The most popular route, (Washington, D.C. Reagan-National - Seattle/Tacoma Intl), can usually be booked for $221.
Can I find deals for flights from District of Columbia to Seattle that include hotel bookings?
Yes. In addition to deals on District of Columbia to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Seattle.
Can I find deals for business class flights from District of Columbia to Seattle?
Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Seattle?
Currently, January is the cheapest month in which you can book a flight from District of Columbia to Seattle (average of $238). Flying from District of Columbia to Seattle in July is currently the most expensive (average of $405). 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

SeaTac

Tukwila

Tacoma

Lakewood

Renton

Ocean Shores

Lacey

Leavenworth

Federal Way

Olympia

Shoreline

Cle Elum

Centralia

Kent

Lynnwood

Aberdeen

Shelton

Silverdale

Redmond

Issaquah

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from District of Columbia to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$110	Average$268	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$123	Average$259	FlexibilityNo cancel fee	On-time65%
JetBlue	Cheapest$131	Average$382	FlexibilityNo cancel fee	On-time62%
Sun Country Air	Cheapest$144	Average$362	FlexibilityNo cancel fee	On-time83%
Hawaiian Airlines	Cheapest$158	Average$466	FlexibilityNo cancel fee	On-time85%
Delta	Cheapest$206	Average$404	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$206	Average$450	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$260	Average$497	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$277	Average$451	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$306	Average$535	FlexibilityNo cancel fee	On-time63%

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$144+ Cheap flights from District of Columbia 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Seattle with Cheapflights

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Cheap flight deals from District of Columbia to Seattle

Keep the following information in mind while searching for District of Columbia to Seattle flight deals. Data was last updated April 30, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from District of Columbia to Seattle

Cheapest flights from District of Columbia to SeattleExplore the most affordable flight options available from District of Columbia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Explore the most affordable flight options available from District of Columbia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from District of Columbia to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from District of Columbia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Seattle

What is the cheapest month to book a flight from District of Columbia to Seattle?

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

Find hourly flight availability from District of Columbia 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 April 30, 2025.

Weekly flight availability from District of Columbia to Seattle

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines, Southwest and Delta from District of Columbia to Seattle have to say. You can also see how each airline compares 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 District of Columbia 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 District of Columbia?

What are the cheapest airlines to fly from District of Columbia to Seattle one-way?

What are the most reliable airlines from District of Columbia to Seattle?

What are the cheapest flights from District of Columbia to Seattle?

Can I find deals for flights from District of Columbia to Seattle that include hotel bookings?

How can I find direct flights from District of Columbia to Seattle?

Can I find deals for business class flights from District of Columbia to Seattle?

What is the cheapest month to book a flight from District of Columbia to Seattle?

Traveling to a place near District of Columbia?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for District of Columbia to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from District of Columbia to Seattle

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Cheapest flights from District of Columbia to Seattle
Explore the most affordable flight options available from District of Columbia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.