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Delaware

$94+ Cheap flights from Washington to Delaware

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ILG
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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Cheap flight deals from Washington to Delaware

Keep the following information in mind while searching for Washington to Delaware flight deals. Data was last updated April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$293
(Alaska Airlines)

One-way from

$94
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$402
Provider with most accurate pricing for Seattle/Tacoma Intl-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Philadelphia flights.
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From Washington to Delaware
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One-way flight from Washington to Delaware
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Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Washington to Delaware

Cheapest flights from Washington to Delaware
Explore the most affordable flight options available from Washington to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:49 pmGEG - PHL
1 stop8h 56mAlaska Airlines
Sat 9/66:58 pmPHL - GEG
1 stop8h 01mAlaska Airlines
Deal found 3/31$293
This CheapOair deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:00 amSEA - PHL
1 stop8h 37mMultiple Airlines
Mon 5/1212:23 pmPHL - SEA
2 stops14h 47mMultiple Airlines
Deal found 4/1$297
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/293:11 pmSEA - PHL
1 stop11h 27mFrontier
Sun 6/11:02 pmPHL - SEA
1 stop14h 32mFrontier
Deal found 4/1$298
This Frontier deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/511:48 amGEG - PHL
1 stop7h 22mFrontier
Sun 6/86:15 amPHL - GEG
1 stop7h 48mFrontier
Deal found 3/30$298
This Mytrip deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:30 pmSEA - PHL
2 stops13h 36mSpirit Airlines
Thu 5/87:45 amPHL - SEA
2 stops33h 40mSpirit Airlines
Deal found 4/1$303
This American Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/810:59 pmSEA - PHL
Nonstop5h 08mAmerican Airlines
Tue 5/136:45 pmPHL - SEA
Nonstop6h 05mAmerican Airlines
Deal found 4/1$305
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2112:45 amSEA - PHL
1 stop6h 51mDelta
Tue 5/611:31 amPHL - SEA
1 stop9h 20mDelta
Deal found 4/1$307
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/302:15 pmGEG - PHL
1 stop6h 35mDelta
Wed 5/76:00 amPHL - GEG
1 stop9h 46mDelta
Deal found 4/1$307
This CheapOair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/49:27 pmPDX - PHL
1 stop30h 20mFrontier
Tue 4/86:40 amPHL - PDX
1 stop20h 57mFrontier
Deal found 3/31$310
This Mytrip deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/201:37 pmPDX - PHL
3 stops29h 59mSpirit Airlines
Tue 5/277:45 amPHL - PDX
2 stops31h 57mSpirit Airlines
Deal found 3/31$316
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:27 amGEG - PHL
2 stops10h 15mAmerican Airlines
Wed 5/76:39 amPHL - GEG
1 stop8h 46mAmerican Airlines
Deal found 3/31$328
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2811:19 pmPDX - PHL
1 stop7h 01mDelta
Mon 5/56:34 pmPHL - PDX
1 stop8h 10mDelta
Deal found 3/30$343

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Delaware that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 1, 2025.
Use the filters below to find and compare flights from Washington to Delaware that are best for you.

Fly from

Washington

Fly to

Delaware

Route

Depart

Return

Price

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 9/3

5:49 pm-5:45 am

1 stop8h 56m

Philadelphia

Sat 9/6

6:58 pm-11:59 pm

1 stop8h 01m

$293

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 5/9

6:00 am-5:37 pm

1 stop8h 37m

Philadelphia

Mon 5/12

12:23 pm-12:10 am

2 stops14h 47m

$297

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 5/29

3:11 pm-5:38 am

1 stop11h 27m

Philadelphia

Sun 6/1

1:02 pm-12:34 am

1 stop14h 32m

$298

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 6/5

11:48 am-10:10 pm

1 stop7h 22m

Philadelphia

Sun 6/8

6:15 am-11:03 am

1 stop7h 48m

$298

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Sat 5/3

12:30 pm-5:06 am

2 stops13h 36m

Philadelphia

Thu 5/8

7:45 am-2:25 pm

2 stops33h 40m

$303

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 5/8

10:59 pm-7:07 am

Nonstop5h 08m

Philadelphia

Tue 5/13

6:45 pm-9:50 pm

Nonstop6h 05m

$305

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 4/21

12:45 am-10:36 am

1 stop6h 51m

Philadelphia

Tue 5/6

11:31 am-5:51 pm

1 stop9h 20m

$307

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/30

2:15 pm-11:50 pm

1 stop6h 35m

Philadelphia

Wed 5/7

6:00 am-12:46 pm

1 stop9h 46m

$307

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Thu 4/17

10:25 am-5:52 am

1 stop16h 27m

Philadelphia

Tue 4/22

10:08 pm-1:37 pm

1 stop18h 29m

$310

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/30

6:27 am-7:42 pm

2 stops10h 15m

Philadelphia

Wed 5/7

6:39 am-12:25 pm

1 stop8h 46m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Washington 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 Washington to Delaware

Rainfall in Delaware by month

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

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

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

If weather is an important factor for your trip to Delaware, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Delaware

Get insights into the airlines that provide service to Delaware. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Delaware. Reviews last updated April 1, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Washington to Delaware to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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
9,823 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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
4,275 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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
7,899 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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
2,345 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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
8,615 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.1

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

Find useful and relevant information for your journey from Washington to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from State of Washington to Delaware one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $94. However, be on the lookout for offers from Hawaiian Airlines and Alaska Airlines, as they are both options that can get you from State of Washington to Delaware for a low price.

  • Can I find deals for flights from Washington to Delaware that include hotel bookings?

    Yes. In addition to deals on Washington to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Delaware?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Delaware.

  • Can I find deals for business class flights from Washington to Delaware?

    Yes. Cheapflights offers flight deals from Washington to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Washington to Delaware

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