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Delaware

$129+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ILG
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$295
(Cheapflightsfares)

One-way from

$129
(Mytrip)

Popular in

December

Cheapest in

March

Average price

$467
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. 5% potential increase in price ($28 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 June 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 June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:35 pmPDX - PHL
1 stop11h 57mSpirit Airlines
Mon 9/295:45 amPHL - PDX
2 stops10h 45mSpirit Airlines
Deal found 6/10$295
This Frontier deal was found by Cheapflights users on 6/12. 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.
Fri 7/113:11 pmSEA - PHL
1 stop11h 38mFrontier
Mon 7/147:19 amPHL - SEA
1 stop9h 47mFrontier
Deal found 6/12$306
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/113:10 pmGEG - PHL
1 stop11h 15mAmerican Airlines
Sat 8/235:28 pmPHL - GEG
1 stop8h 27mAmerican Airlines
Deal found 6/11$306
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/119:45 pmSEA - PHL
Nonstop5h 13mAmerican Airlines
Fri 8/157:10 pmPHL - SEA
Nonstop6h 16mAmerican Airlines
Deal found 6/11$307
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:58 pmSEA - PHL
1 stop9h 34mSpirit Airlines
Sun 9/217:22 amPHL - SEA
2 stops11h 31mSpirit Airlines
Deal found 6/12$311
This Delta deal was found by Cheapflights users on 6/9. 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 7/305:30 amSEA - PHL
1 stop9h 15mDelta
Sun 8/36:55 pmPHL - SEA
1 stop8h 04mDelta
Deal found 6/9$313
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:35 pmPDX - PHL
1 stop11h 57mMultiple Airlines
Thu 10/96:19 amPHL - PDX
1 stop20h 57mMultiple Airlines
Deal found 6/12$314
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:39 pmGEG - PHL
1 stop8h 01mHawaiian Airlines
Sat 11/86:55 pmPHL - GEG
1 stop8h 04mHawaiian Airlines
Deal found 6/11$314
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:35 pmGEG - PHL
2 stops14h 00mUnited Airlines
Sun 8/316:30 amPHL - GEG
1 stop7h 57mUnited Airlines
Deal found 6/11$315
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:01 pmPDX - PHL
1 stop7h 08mFrontier
Mon 8/117:19 amPHL - PDX
1 stop8h 32mFrontier
Deal found 6/10$318
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 11/12:05 pmGEG - PHL
1 stop6h 38mDelta
Sat 11/87:00 amPHL - GEG
2 stops14h 47mDelta
Deal found 6/10$320
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/49:15 pmSEA - PHL
Nonstop5h 10mAlaska Airlines
Thu 8/146:52 pmPHL - SEA
Nonstop6h 05mAlaska Airlines
Deal found 6/11$327

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 June 12, 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

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Fri 8/22

2:35 pm-5:32 am

1 stop11h 57m

Philadelphia

Sat 8/30

6:30 am-1:30 pm

1 stop10h 00m

$298

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 7/11

3:11 pm-5:49 am

1 stop11h 38m

Philadelphia

Mon 7/14

7:19 am-2:06 pm

1 stop9h 47m

$306

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Mon 8/11

3:10 pm-5:25 am

1 stop11h 15m

Philadelphia

Sat 8/23

5:28 pm-10:55 pm

1 stop8h 27m

$306

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 8/11

9:45 pm-5:58 am

Nonstop5h 13m

Philadelphia

Fri 8/15

7:10 pm-10:26 pm

Nonstop6h 16m

$307

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Mon 8/18

5:50 pm-5:09 am

1 stop8h 19m

Philadelphia

Sat 8/23

6:30 am-1:30 pm

1 stop10h 00m

$309

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 7/1

3:58 pm-5:44 am

1 stop10h 46m

Philadelphia

Tue 7/8

7:05 am-3:03 pm

2 stops10h 58m

$312

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 7/30

5:30 am-5:45 pm

1 stop9h 15m

Philadelphia

Thu 8/7

6:55 pm-11:59 pm

1 stop8h 04m

$313

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Sat 11/1

7:39 pm-6:40 am

1 stop8h 01m

Philadelphia

Sat 11/8

6:55 pm-11:59 pm

1 stop8h 04m

$314

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 8/27

12:35 pm-5:35 am

2 stops14h 00m

Philadelphia

Sun 8/31

6:30 am-11:27 am

1 stop7h 57m

$315

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 8/5

7:01 pm-5:09 am

1 stop7h 08m

Philadelphia

Mon 8/11

7:19 am-12:51 pm

1 stop8h 32m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 12, 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
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $129. However, be on the lookout for offers from Southwest and United 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

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