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 4,016 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 26 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 far ahead should I book a flight from Washington, D.C. to Seattle with Delta?

Booking with Delta 40 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. to Seattle with Delta?

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 $406. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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 $129

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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)	$403
One-way from	$129
Round-trip from	$258

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

Search Deals

Best time to find cheap flights from Washington, D.C. to Seattle/Tacoma Intl; 2% potential price drop.

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Can I get a flight from Washington, D.C. to Seattle on Delta for under $500?
Delta offers 26 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 4,016 reviews by Cheapflights users who have traveled with Delta.

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

Tue 6/116:00 amBWI - SEA

1 stop7h 45mDelta

Tue 6/117:13 pmSEA - BWI

1 stop7h 37mDelta

Deal found 5/30$258

Pick Dates

Sat 6/85:13 pmBWI - SEA

1 stop7h 46mDelta

Wed 6/126:00 amSEA - BWI

1 stop7h 58mDelta

Deal found 5/30$268

Pick Dates

Thu 5/306:50 pmBWI - SEA

1 stop8h 31mDelta

Fri 5/316:10 amSEA - BWI

1 stop8h 01mDelta

Deal found 5/29$278

Pick Dates

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

Wed 8/215:36 pmIAD - SEA

Nonstop6h 03mDelta

Wed 8/289:59 pmSEA - IAD

Nonstop4h 57mDelta

Deal found 5/29$277

Pick Dates

Mon 8/265:36 pmIAD - SEA

Nonstop6h 03mDelta

Wed 9/49:59 pmSEA - IAD

Nonstop4h 57mDelta

Deal found 5/28$283

Pick Dates

Mon 8/197:30 amIAD - SEA

Nonstop5h 47mDelta

Fri 8/239:59 pmSEA - IAD

Nonstop4h 57mDelta

Deal found 5/29$289

Pick Dates

Last minute deals on Cheapflights

Sat 6/85:13 pmBWI - SEA

1 stop7h 46mDelta

Wed 6/126:00 amSEA - BWI

1 stop7h 58mDelta

Deal found 5/30$268

Pick Dates

Wed 6/56:00 amBWI - SEA

1 stop7h 40mDelta

Mon 6/1012:40 amSEA - BWI

1 stop6h 52mDelta

Deal found 5/29$308

Pick Dates

Sat 6/85:13 pmBWI - SEA

1 stop7h 46mDelta

Thu 6/136:00 amSEA - BWI

1 stop7h 18mDelta

Deal found 5/30$318

Pick Dates

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

Mon 10/146:15 pmBWI - SEA

1 stop8h 16mDelta

Deal found 5/29$129

Pick Dates

Wed 10/167:50 amIAD - SEA

Nonstop5h 54mDelta

Deal found 5/30$139

Pick Dates

Tue 8/137:30 amIAD - SEA

Nonstop5h 47mDelta

Deal found 5/29$145

Pick Dates

Best time to book a flight from Washington, D.C. to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Washington, D.C. with our price prediction graph.

Estimated round-trip price

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 30, 2024.

United Airlines flights from Washington, D.C. to Seattle/Tacoma Intl

Alaska Airlines flights from Washington, D.C. to Seattle/Tacoma Intl

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 30, 2024.

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to Boston

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to Boston

Delta flights from Washington, D.C. to Seattle

Delta flights from Washington, D.C. to Honolulu

Delta flights from Washington, D.C. to Seattle

Delta flights from Washington, D.C. to San Diego

Delta flights from Washington, D.C. to Honolulu

Delta flights from Washington, D.C. to San Diego

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

Seattle car rentals

Seattle/Tacoma Intl Airport car rentals

Kenmore Air Harbor Airport car rentals

Spokane car rentals

Bellingham car rentals

Pasco car rentals

Yakima car rentals

Walla Walla car rentals

Wenatchee car rentals

Pullman car rentals

Capitol Hill car rentals

West Seattle car rentals

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 30, 2024.

Flights to New York

Flights to Los Angeles

Flights to San Francisco

Flights to Fort Lauderdale

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 30, 2024.

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to Seattle

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to San Diego

Delta flights from Washington, D.C. to Honolulu

Delta flights from Washington, D.C. to Boston

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to Seattle

Delta flights from Washington, D.C. to San Diego

Delta flights from Washington, D.C. to Atlanta

Delta flights from Washington, D.C. to Boston

See what others are saying about Delta

Delta

8.0

Very good

10,457 reviews

Check prices

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.

1 out of 3486

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

View all available airlines

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 30, 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.

Best time to book a flight from Washington, D.C. to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Washington, D.C. with our price prediction graph.

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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 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 30, 2024.

See what others are saying about Delta

Overview

Recent reviews

100% Free

Book with Flexibility

Travel Smart

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 30, 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.

Best time to book a flight from Washington, D.C. to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Washington, D.C. with our price prediction graph.

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 30, 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 30, 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 30, 2024.