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Delaware

$79+ Cheap flights from Dulles Intl (IAD) 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ILG
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Dulles Intl to Delaware

Cheapest flights from Dulles Intl to Delaware
Explore the most affordable flight options available from Dulles Intl to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:03 pmIAD - PHL
1 stop8h 20mMultiple Airlines
Tue 11/186:00 amPHL - IAD
2 stops14h 20mMultiple Airlines
Deal found 10/29$158
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:00 pmIAD - PHL
1 stop9h 25mMultiple Airlines
Tue 11/183:10 pmPHL - IAD
2 stops29h 10mMultiple Airlines
Deal found 10/30$161
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:03 pmIAD - PHL
1 stop8h 20mFrontier
Wed 11/198:00 amPHL - IAD
1 stop26h 17mFrontier
Deal found 10/28$170
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:00 pmIAD - PHL
1 stop9h 25mMultiple Airlines
Sat 11/151:26 pmPHL - IAD
2 stops10h 29mMultiple Airlines
Deal found 10/30$172
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:00 pmIAD - PHL
1 stop9h 25mFrontier
Mon 11/1712:35 pmPHL - IAD
1 stop7h 17mFrontier
Deal found 10/30$173
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:03 pmIAD - PHL
1 stop8h 20mMultiple Airlines
Sat 11/151:26 pmPHL - IAD
2 stops10h 29mMultiple Airlines
Deal found 10/30$174
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:03 pmIAD - PHL
1 stop8h 20mFrontier
Mon 11/1712:35 pmPHL - IAD
1 stop7h 17mFrontier
Deal found 10/30$175
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:03 pmIAD - PHL
1 stop8h 20mFrontier
Sun 11/166:24 pmPHL - IAD
2 stops22h 34mFrontier
Deal found 10/29$176
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:12 amIAD - PHL
1 stop8h 16mFrontier
Sun 11/238:42 pmPHL - IAD
1 stop11h 03mFrontier
Deal found 10/30$177
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/288:30 amIAD - PHL
Nonstop1h 16mUnited Airlines
Tue 12/210:33 amPHL - IAD
Nonstop1h 07mUnited Airlines
Deal found 10/29$179
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:00 pmIAD - PHL
1 stop9h 25mFrontier
Sun 11/168:40 amPHL - IAD
1 stop11h 11mFrontier
Deal found 10/30$190
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:34 amIAD - SBY
1 stop4h 58mAmerican Airlines
Thu 12/46:17 amSBY - IAD
1 stop7h 03mAmerican Airlines
Deal found 10/30$556

Cheap flight deals from Dulles Intl to Delaware

Keep the following information in mind while searching for Dulles Intl to Delaware flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$158
(Kiwi.com)

One-way from

$79
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$407
Provider with most accurate pricing for Washington, D.C. (WAS)-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Philadelphia flights.
Search Deals
From Washington, D.C. Dulles Intl to Delaware
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Delaware
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 October 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Delaware that are best for you.

Fly from

Dulles Intl

Fly to

Delaware

Route

Depart

Return

Price

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 11/14

3:03 pm-11:23 pm

1 stop8h 20m

Philadelphia

Tue 11/18

6:00 am-8:20 pm

2 stops14h 20m

$158

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 11/28

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Tue 12/2

10:33 am-11:40 am

Nonstop1h 07m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sun 1/11

8:20 am-9:38 am

Nonstop1h 18m

Philadelphia

Sat 1/17

7:45 pm-9:03 pm

Nonstop1h 18m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 11/26

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Wed 12/3

10:33 am-11:40 am

Nonstop1h 07m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 11/28

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Fri 12/5

8:05 pm-9:15 pm

Nonstop1h 10m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 11/21

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Sat 11/22

10:22 am-11:28 am

Nonstop1h 06m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 11/14

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Wed 11/19

10:34 am-11:40 am

Nonstop1h 06m

$194

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 11/15

12:55 pm-2:06 pm

Nonstop1h 11m

Philadelphia

Tue 11/18

8:00 pm-9:07 pm

Nonstop1h 07m

$209

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 12/8

5:45 am-7:30 pm

1 stop13h 45m

Philadelphia

Wed 12/10

6:32 pm-11:10 pm

1 stop28h 38m

$237

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 11/20

8:30 am-9:46 am

Nonstop1h 16m

Philadelphia

Mon 11/24

10:34 am-11:40 am

Nonstop1h 06m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 22 results
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Best time to book a flight from Dulles Intl to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Dulles Intl 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, D.C. Dulles Intl Airport to Delaware
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Delaware?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Delaware in 1h 16m. Fly via United Airlines to get the fastest option. Washington, D.C. Dulles Intl Airport and Delaware are separated by a distance of 134 mi. Most flights are nonstop.

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

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

  • How can I find direct flights from Dulles Intl to Delaware?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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 Dulles Intl to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
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Reagan-National to Boston flights
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Baltimore to San Francisco flights
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Baltimore to Atlanta flights
Reagan-National to Fort Lauderdale flights
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Baltimore to Midway flights
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Dulles Intl to Denver flights
Reagan-National to Tampa flights
Reagan-National to New Orleans flights
Dulles Intl to Austin flights
Baltimore to Denver flights
Baltimore to New Orleans flights
Reagan-National to Sky Harbor Intl flights
Reagan-National to George Bush Intcntl flights

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