HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Delaware

$95+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ILG
Aug 7 — Aug 141
Fri 8/7
Fri 8/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Delaware with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 July 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Tue 8/48:33 pm
IAD
-
PHL
1 stop10h 42m
Frontier
Tue 8/114:30 pm
PHL
-
IAD
1 stop24h 44m
Frontier
Deal found 7/7$192
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/318:33 pm
IAD
-
PHL
1 stop12h 06m
Frontier
Fri 8/74:40 pm
PHL
-
IAD
1 stop23h 54m
Frontier
Deal found 7/3$205
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Mon 8/246:20 am
IAD
-
PHL
1 stop6h 06m
Frontier
Mon 8/242:45 pm
PHL
-
IAD
1 stop8h 07m
Frontier
Deal found 7/2$208
This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
Wed 8/196:09 pm
IAD
-
PHL
1 stop22h 07m
Frontier
Wed 8/268:30 am
PHL
-
IAD
1 stop8h 44m
Frontier
Deal found 7/5$210
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Mon 8/38:33 pm
IAD
-
PHL
1 stop10h 42m
Frontier
Mon 8/106:25 am
PHL
-
IAD
1 stop16h 27m
Frontier
Deal found 7/4$219
This Kiwi.com deal was found by Cheapflights users on 7/6. 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.
Wed 8/56:09 pm
IAD
-
PHL
1 stop30h 34m
Frontier
Wed 8/124:30 pm
PHL
-
IAD
1 stop6h 22m
Frontier
Deal found 7/6$221
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 7/308:33 pm
IAD
-
PHL
1 stop15h 49m
Multiple Airlines
Sun 8/26:18 pm
PHL
-
IAD
1 stop20h 08m
Multiple Airlines
Deal found 7/5$226
This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Sat 8/156:49 am
IAD
-
PHL
1 stop12h 31m
Frontier
Sat 8/228:30 am
PHL
-
IAD
1 stop14h 22m
Frontier
Deal found 7/7$229
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Sat 9/121:05 pm
IAD
-
PHL
Nonstop1h 15m
United Airlines
Mon 9/147:40 pm
PHL
-
IAD
Nonstop1h 21m
United Airlines
Deal found 7/6$239
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/288:39 pm
IAD
-
PHL
1 stop10h 36m
Frontier
Sun 8/308:30 am
PHL
-
IAD
1 stop8h 44m
Frontier
Deal found 7/5$241
This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
Wed 8/196:20 am
IAD
-
PHL
1 stop6h 06m
Multiple Airlines
Wed 8/266:40 pm
PHL
-
IAD
2 stops25h 04m
Multiple Airlines
Deal found 7/5$247
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Mon 8/1012:00 pm
IAD
-
SBY
2 stops7h 54m
Multiple Airlines
Wed 8/198:06 pm
SBY
-
IAD
1 stop23h 38m
Multiple Airlines
Deal found 7/2$248

Find 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 July 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$192
(Kiwi.com)

One-way from

$95
(Kiwi.com)

Popular in

March

Cheapest in

December

Average price

$359
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. 20% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 8, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 7/30

10:10 pm-11:20 pm

Nonstop1h 10m

Philadelphia

Sun 8/2

6:10 am-7:19 am

Nonstop1h 09m

$239

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 8/15

8:30 am-9:43 am

Nonstop1h 13m

Philadelphia

Sat 8/22

10:30 am-11:39 am

Nonstop1h 09m

$239

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 8/1

10:10 pm-11:20 pm

Nonstop1h 10m

Philadelphia

Sat 8/8

7:45 pm-9:10 pm

Nonstop1h 25m

$239

Washington, D.C.Salisbury

IAD - SBY

IADSBY

Washington, D.C. Dulles Intl

Mon 8/10

12:00 pm-7:54 pm

2 stops7h 54m

Salisbury-Ocean City

Wed 8/19

8:06 pm-7:44 pm

1 stop23h 38m

$248

Washington, D.C.Salisbury

IAD - SBY

IADSBY

Washington, D.C. Dulles Intl

Wed 8/5

11:11 am-8:32 pm

1 stop9h 21m

Salisbury-Ocean City

Wed 8/12

8:06 pm-7:38 pm

1 stop23h 32m

$257

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 7/10

8:35 am-9:45 am

Nonstop1h 10m

Philadelphia

Fri 7/17

10:39 am-11:55 am

Nonstop1h 16m

$284

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 7/28

12:55 pm-2:10 pm

Nonstop1h 15m

Philadelphia

Sat 8/1

6:10 am-7:19 am

Nonstop1h 09m

$309

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 8/29

8:30 am-9:43 am

Nonstop1h 13m

Philadelphia

Sun 8/30

7:40 pm-8:59 pm

Nonstop1h 19m

$309

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 7/25

10:10 pm-11:20 pm

Nonstop1h 10m

Philadelphia

Sun 7/26

7:45 pm-9:10 pm

Nonstop1h 25m

$310

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 7/24

10:10 pm-11:20 pm

Nonstop1h 10m

Philadelphia

Sun 7/26

10:39 am-11:55 am

Nonstop1h 16m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 38 resultsSorted by cheapest first
1
2
3
4

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 10m. 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

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.

Alternative routes for Dulles Intl to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Seattle flights
Reagan-National to Seattle flights
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Dulles Intl to Las Vegas flights
Baltimore to Seattle flights
Baltimore to O'Hare Intl flights
Reagan-National to O'Hare Intl flights
Dulles Intl to O'Hare Intl flights
Reagan-National to Los Angeles flights
Dulles Intl to Orlando flights
Baltimore to Hobby flights
Dulles Intl to Miami flights
Baltimore to Miami flights
Baltimore to Los Angeles flights
Baltimore to Las Vegas flights
Dulles Intl to Los Angeles flights
Reagan-National to Dallas/Fort Worth flights
Reagan-National to Las Vegas flights
Baltimore to Boston flights
Reagan-National to Atlanta flights
Reagan-National to Miami flights
Dulles Intl to Atlanta flights
Dulles Intl to Denver flights
Baltimore to Denver flights
Baltimore to Orlando flights
Baltimore to Atlanta flights
Reagan-National to Boston flights
Dulles Intl to Boston flights
Baltimore to Fort Lauderdale flights
Dulles Intl to Hobby flights
Dulles Intl to Fort Lauderdale flights
Reagan-National to San Francisco flights
Reagan-National to Orlando flights
Baltimore to San Francisco flights
Baltimore to George Bush Intcntl flights
Dulles Intl to San Francisco flights
Reagan-National to Hobby flights
Dulles Intl to Tampa flights
Dulles Intl to Midway flights
Dulles Intl to George Bush Intcntl flights
Reagan-National to George Bush Intcntl flights
Dulles Intl to New Orleans flights
Dulles Intl to Sky Harbor Intl flights
Baltimore to Detroit flights
Reagan-National to Minneapolis flights
Reagan-National to Fort Lauderdale flights
Reagan-National to Nashville flights
Reagan-National to Denver flights
Baltimore to Tampa flights

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.