How do most travelers feel about Delta?

When planning your WAS-SEA trip, keep in mind that Delta is typically rated 6.2/10. This rating comes from 4,051 reviews by Cheapflights users who have traveled with Delta.

Can I get a flight from Washington, D.C. to Seattle on Delta for under $500?

Delta offers 24 flights from Washington, D.C. to Seattle for under $500. Prices vary by date and time. To see all prices and select your dates, click here.

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.

Fly Delta from Washington, D.C. to SEA as low as $139

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Cheapflights users flying from Washington, D.C. to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

Delta flights from Washington, D.C. to Seattle in 2024

Popular in	June
Cheapest in	January
Average price (all airlines)	$402
One-way from	$139
Round-trip from	$258

Highest demand for flights from Washington, D.C. to Seattle/Tacoma Intl; 14% potential price increase.

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Best time to find cheap flights from Washington, D.C. to Seattle/Tacoma Intl; 3% potential price drop.

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Average price for all Washington, D.C. to Seattle/Tacoma Intl flights (one-way and round-trip).

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Cheapest one-way Delta flight from Washington, D.C. to Seattle/Tacoma Intl

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Cheapest round-trip Delta flight from Washington, D.C. to Seattle/Tacoma Intl

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Can I get a flight from Washington, D.C. to Seattle on Delta for under $500?
Delta offers 24 flights from Washington, D.C. to Seattle for under $500. Prices vary by date and time. To see all prices and select your dates, click here.
How do most travelers feel about Delta?
When planning your WAS-SEA trip, keep in mind that Delta is typically rated 6.2/10. This rating comes from 4,051 reviews by Cheapflights users who have traveled with Delta.

Cheapest Delta flights from Washington, D.C. to Seattle

Mon 5/276:10 amBWI - SEA

1 stop7h 22mDelta

Sat 6/112:40 amSEA - BWI

1 stop7h 19mDelta

Deal found 5/20$258

Pick Dates

Wed 5/296:00 amBWI - SEA

1 stop7h 42mDelta

Sun 6/212:40 amSEA - BWI

1 stop7h 19mDelta

Deal found 5/20$308

Pick Dates

Thu 5/306:16 pmBWI - SEA

1 stop7h 09mDelta

Fri 6/712:40 amSEA - BWI

1 stop6h 52mDelta

Deal found 5/20$318

Pick Dates

Direct flights from Washington, D.C. to Seattle on Delta

Tue 9/107:50 amIAD - SEA

Nonstop5h 54mDelta

Tue 9/1710:00 pmSEA - IAD

Nonstop4h 56mDelta

Deal found 5/20$277

Pick Dates

Tue 9/177:50 amIAD - SEA

Nonstop5h 54mDelta

Fri 9/2010:00 pmSEA - IAD

Nonstop4h 56mDelta

Deal found 5/20$283

Pick Dates

Thu 10/317:50 amIAD - SEA

Nonstop5h 54mDelta

Mon 11/410:00 pmSEA - IAD

Nonstop4h 56mDelta

Deal found 5/20$289

Pick Dates

Last minute deals on Cheapflights

Mon 5/276:10 amBWI - SEA

1 stop7h 22mDelta

Wed 6/512:40 amSEA - BWI

1 stop7h 19mDelta

Deal found 5/20$258

Pick Dates

Wed 5/296:00 amBWI - SEA

1 stop7h 42mDelta

Sun 6/212:40 amSEA - BWI

1 stop7h 19mDelta

Deal found 5/20$308

Pick Dates

Thu 5/306:16 pmBWI - SEA

1 stop7h 09mDelta

Sat 6/87:13 pmSEA - BWI

1 stop7h 37mDelta

Deal found 5/20$318

Pick Dates

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

Sat 9/77:00 amIAD - SEA

Nonstop5h 34mDelta

Deal found 5/19$139

Pick Dates

Mon 9/95:20 pmIAD - SEA

Nonstop5h 52mDelta

Deal found 5/19$145

Pick Dates

Wed 6/126:06 pmBWI - SEA

1 stop8h 53mDelta

Deal found 5/20$148

Pick Dates

Average price of Delta flights from Washington, D.C. to Seattle

Currently, the most affordable month to book a Delta flight from Washington, D.C. to Seattle in January, with an average price of $247. Conversely, traveling with Delta from Washington, D.C. to Seattle in July will be the most expensive, with an average cost of $407. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$247

February

$254

March

$288

April

$294

May

$318

June

$404

July

$407

August

$344

September

$278

October

$256

November

$258

December

$248

Temperature and rainfall in Seattle by month

SEA Temperature	41 - 66.2 °F

SEA

Temperature

41 - 66.2 °F

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).

Browse thousands of different options on Cheapflights for your next trip

Fly from Washington, D.C. to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

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Other Delta flights from Washington, D.C.
Browse through other Delta flights departing from Washington, D.C.. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

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Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

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If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

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Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 20, 2024.

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Delta flights from Washington, D.C. to Seattle

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See what others are saying about Delta

Delta

8.0

Very good

10,615 reviews

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Overview

Recent reviews

3.9

Poor|Oct 2021

There were complications with my flights boarding in spokane and my secondary flight was changed without my consent to one that boarded at the same time as my first flight let me out on the opposite side of the massivr layover airport. It was only because an employee saw my struggle and confusion and hooked me up with a ride that I even made the flight dispite delta's best efforts. My TV's headphone jack on my first flight was also busted which sucked to find out after buying headphones on the flight. About halfway through the flight one of the attendants moved me to a seat with a working TV. Long story short Delta as an airline was terrible but their employees did their best to help me with what limited options they had to work with.

6.0

Okay|Apr 2022

No entertainment, five hour flight and choice of pretzels or a cookie. Still a place to put your cigarette in the restroom on board. How old is the plane?

5.9

Fair|Oct 2021

The staff was the highlight. Only thing that could have been better was the temperature on the flight from Hawaii to Seattle. The plane was too cold to get comfortable

10.0

Wonderful|Aug 2021

No complaints!!

2.0

Poor|Oct 2021

I never took this flight and was never able to cancel it in Kayak’s system! I will never book through Kayak again. The flight was probably fine. Next time I will only book with the airline directly. I would caution anyone else to do the same.

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Cheapflights users flying from Washington, D.C. to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

Delta flights from Washington, D.C. to Seattle in 2024

Find detailed information about Delta flights from Washington, D.C. to Seattle. Explore the options provided by Delta to plan your journey from Washington, D.C. to Seattle. Data last updated May 20, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Washington, D.C. to Seattle on Delta for under $500?

How do most travelers feel about Delta?

Cheapest Delta flights from Washington, D.C. to Seattle

Direct flights from Washington, D.C. to Seattle on Delta

Last minute deals on Cheapflights

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

Average price of Delta flights from Washington, D.C. to Seattle

Plan your Delta flight from Washington, D.C. to Seattle by taking into account the cheapest months to travel. The average price of a one-way Delta flight from Washington, D.C. to Seattle is currently $144 while a round-trip flight costs $283. Price data was last updated on May 12, 2024.

Temperature and rainfall in Seattle by month

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Washington, D.C. to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Other Delta flights from Washington, D.C.
Browse through other Delta flights departing from Washington, D.C.. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Browse through other Delta flights departing from Washington, D.C.. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Washington, D.C. and Seattle
Choose from other airlines serving Washington, D.C. and Seattle.

Choose from other airlines serving Washington, D.C. and Seattle.

Other popular destinations in North America
If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 20, 2024.

See what others are saying about Delta

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Flights

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

Cheapflights users flying from Washington, D.C. to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

Delta flights from Washington, D.C. to Seattle in 2024

Find detailed information about Delta flights from Washington, D.C. to Seattle. Explore the options provided by Delta to plan your journey from Washington, D.C. to Seattle. Data last updated May 20, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Washington, D.C. to Seattle on Delta for under $500?

How do most travelers feel about Delta?

Cheapest Delta flights from Washington, D.C. to Seattle

Direct flights from Washington, D.C. to Seattle on Delta

Last minute deals on Cheapflights

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

Average price of Delta flights from Washington, D.C. to Seattle

Plan your Delta flight from Washington, D.C. to Seattle by taking into account the cheapest months to travel. The average price of a one-way Delta flight from Washington, D.C. to Seattle is currently $144 while a round-trip flight costs $283. Price data was last updated on May 12, 2024.

Temperature and rainfall in Seattle by month

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Washington, D.C. to Seattle on another airlineConsider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.

See what others are saying about Delta

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Washington, D.C. to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 20, 2024.