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Delaware

$102+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ILG
May 4 — May 111
Mon 5/4
Mon 5/11
1 adult, Economy
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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 April 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/242:58 pm
IAD
-
PHL
2 stops16h 43m
Multiple Airlines
Mon 4/277:10 pm
PHL
-
IAD
1 stop29h 26m
Multiple Airlines
Deal found 4/3$190
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:10 am
IAD
-
PHL
1 stop11h 39m
Frontier
Mon 4/277:24 pm
PHL
-
IAD
2 stops29h 12m
Frontier
Deal found 3/30$195
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 4/249:21 am
IAD
-
PHL
1 stop15h 33m
Frontier
Mon 4/277:10 pm
PHL
-
IAD
1 stop29h 26m
Frontier
Deal found 4/3$198
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 4/272:58 pm
IAD
-
PHL
2 stops19h 40m
Multiple Airlines
Wed 4/297:56 pm
PHL
-
IAD
1 stop15h 39m
Multiple Airlines
Deal found 4/2$203
This Kiwi.com deal was found by Cheapflights users on 4/2. 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.
Fri 4/171:31 pm
IAD
-
PHL
1 stop18h 10m
Multiple Airlines
Tue 4/211:08 pm
PHL
-
IAD
2 stops11h 28m
Multiple Airlines
Deal found 4/2$219
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:45 am
IAD
-
PHL
2 stops16h 59m
Multiple Airlines
Sun 5/316:26 pm
PHL
-
IAD
1 stop19h 52m
Multiple Airlines
Deal found 3/30$221
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:10 am
IAD
-
PHL
1 stop11h 39m
Frontier
Fri 4/175:05 am
PHL
-
IAD
1 stop7h 41m
Frontier
Deal found 4/1$224
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/312:24 pm
IAD
-
PHL
1 stop12h 42m
Frontier
Tue 6/95:32 pm
PHL
-
IAD
2 stops24h 09m
Frontier
Deal found 3/30$229
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:20 am
IAD
-
PHL
2 stops13h 31m
Multiple Airlines
Mon 5/410:38 pm
PHL
-
IAD
1 stop19h 14m
Multiple Airlines
Deal found 4/1$237
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:55 pm
IAD
-
PHL
Nonstop1h 15m
United Airlines
Mon 4/277:45 pm
PHL
-
IAD
Nonstop1h 10m
United Airlines
Deal found 3/30$239
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/23:26 pm
IAD
-
SBY
1 stop6h 42m
American Airlines
Sat 5/96:26 pm
SBY
-
IAD
1 stop5h 33m
American Airlines
Deal found 4/2$500
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:16 am
IAD
-
SBY
1 stop6h 54m
American Airlines
Sat 4/181:47 pm
SBY
-
IAD
1 stop5h 46m
American Airlines
Deal found 3/30$560

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 April 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$190
(Kiwi.com)

One-way from

$102
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$179
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. 16% potential increase in price ($66 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 April 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 April 4, 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

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 5/1

1:05 pm-2:20 pm

Nonstop1h 15m

Philadelphia

Fri 5/8

7:45 pm-8:55 pm

Nonstop1h 10m

$239
Quickest round-trip

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 6/1

10:34 pm-11:44 pm

Nonstop1h 10m

Philadelphia

Mon 6/8

6:10 am-7:19 am

Nonstop1h 09m

$239

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 4/23

12:55 pm-2:10 pm

Nonstop1h 15m

Philadelphia

Mon 4/27

7:45 pm-8:55 pm

Nonstop1h 10m

$239

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 4/14

12:55 pm-2:10 pm

Nonstop1h 15m

Philadelphia

Sat 4/18

7:45 pm-8:55 pm

Nonstop1h 10m

$269

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 5/8

8:35 am-9:54 am

Nonstop1h 19m

Philadelphia

Tue 5/12

10:38 am-11:50 am

Nonstop1h 12m

$309

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 4/28

12:55 pm-2:10 pm

Nonstop1h 15m

Philadelphia

Tue 5/5

7:45 pm-8:55 pm

Nonstop1h 10m

$309

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 4/24

8:39 am-9:58 am

Nonstop1h 19m

Philadelphia

Mon 4/27

7:45 pm-8:55 pm

Nonstop1h 10m

$309

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 5/2

5:39 pm-6:58 pm

Nonstop1h 19m

Philadelphia

Sun 5/3

10:38 am-11:50 am

Nonstop1h 12m

$324

Washington, D.C.Salisbury

IAD - SBY

IADSBY

Washington, D.C. Dulles Intl

Sat 5/2

3:26 pm-10:08 pm

1 stop6h 42m

Salisbury-Ocean City

Sat 5/9

6:26 pm-11:59 pm

1 stop5h 33m

$500

Washington, D.C.Salisbury

IAD - SBY

IADSBY

Washington, D.C. Dulles Intl

Wed 4/29

9:19 am-1:21 pm

1 stop4h 02m

Salisbury-Ocean City

Wed 5/6

8:04 am-2:47 pm

1 stop6h 43m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 29 resultsSorted by cheapest first
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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 15m. Fly via United Airlines or American Airlines to get the fastest option. Washington, D.C. Dulles Intl Airport and Delaware are separated by a distance of 134 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 Atlanta flights
Reagan-National to Dallas/Fort Worth flights
Baltimore to Seattle flights
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Baltimore to San Francisco flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Sky Harbor Intl flights
Baltimore to Tampa flights
Reagan-National to O'Hare Intl flights
Baltimore to Hobby flights
Dulles Intl to Boston flights
Dulles Intl to Fort Lauderdale flights
Reagan-National to Tampa flights
Reagan-National to Fort Lauderdale flights
Reagan-National to George Bush Intcntl flights
Reagan-National to Boston flights
Dulles Intl to Nashville flights
Dulles Intl to Midway flights
Dulles Intl to Austin flights
Reagan-National to Nashville flights
Reagan-National to Denver flights
Baltimore to Midway flights

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