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Cheap flights from Washington, D.C. Dulles Intl Airport to Philadelphia from $88

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Philadelphia departing on 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Philadelphia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:49 am - 7:20 pm
IAD
-
PHL
12h 31m
1 stop
Frontier Logo
4:45 pm - 10:52 pm
PHL
-
IAD
6h 07m
1 stop
$167Frontier
Sat, Aug 15 - Tue, Aug 18
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
Frontier Logo
4:45 pm - 10:52 pm
PHL
-
IAD
6h 07m
1 stop
$170Frontier
Tue, Aug 11 - Tue, Aug 18
Frontier Logo
7:48 am - 10:28 pm
IAD
-
PHL
14h 40m
1 stop
Frontier Logo
6:25 am - 5:14 pm
PHL
-
IAD
10h 49m
1 stop
$171Frontier
Wed, Aug 5 - Wed, Aug 12
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
Frontier Logo
8:30 am - 4:40 pm
PHL
-
IAD
8h 10m
1 stop
$173Frontier
Tue, Jul 21 - Tue, Jul 28
Frontier Logo
7:48 am - 10:28 pm
IAD
-
PHL
14h 40m
1 stop
Frontier Logo
9:51 am - 4:34 pm
PHL
-
IAD
6h 43m
1 stop
$174Frontier
Wed, Aug 12 - Sat, Aug 15
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
Frontier Logo
4:30 pm - 10:55 pm
PHL
-
IAD
6h 25m
1 stop
$181Frontier
Wed, Aug 5 - Wed, Aug 12
Frontier Logo
7:00 am - 1:12 pm
IAD
-
PHL
6h 12m
1 stop
Frontier Logo
5:38 pm - 12:28 am
PHL
-
IAD
6h 50m
1 stop
$182Frontier
Sat, Oct 17 - Wed, Oct 21
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
Frontier Logo
4:45 pm - 10:52 pm
PHL
-
IAD
6h 07m
1 stop
$186Frontier
Sun, Aug 9 - Sat, Aug 22
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
Frontier Logo
4:45 pm - 10:52 pm
PHL
-
IAD
6h 07m
1 stop
$187Frontier
Sun, Aug 9 - Tue, Aug 18
Frontier Logo
8:33 pm - 8:39 am
IAD
-
PHL
12h 06m
1 stop
Frontier Logo
8:30 am - 4:40 pm
PHL
-
IAD
8h 10m
1 stop
$188Frontier
Fri, Jul 17 - Tue, Jul 21

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Frontier flights from Washington, D.C. Dulles Intl Airport to Philadelphia

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Philadelphia flight tickets
Frontier
Aug 15
IAD6:49 amWashington, D.C. Dulles Intl
12h 31m
1 stop
PHL7:20 pmPhiladelphia
Aug 18
PHL4:45 pmPhiladelphia
6h 07m
1 stop
IAD10:52 pmWashington, D.C. Dulles Intl
$167
Frontier
Aug 11
IAD8:33 pmWashington, D.C. Dulles Intl
10h 42m
1 stop
PHL7:15 amPhiladelphia
Aug 18
PHL4:45 pmPhiladelphia
6h 07m
1 stop
IAD10:52 pmWashington, D.C. Dulles Intl
$170
Frontier
Aug 5
IAD7:48 amWashington, D.C. Dulles Intl
14h 40m
1 stop
PHL10:28 pmPhiladelphia
Aug 12
PHL6:25 amPhiladelphia
10h 49m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$171

American Airlines flights from Washington, D.C. Dulles Intl Airport to Philadelphia

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Philadelphia flight tickets
American Airlines
Jul 21
IAD6:33 amWashington, D.C. Dulles Intl
4h 39m
1 stop
PHL11:12 amPhiladelphia
Jul 28
PHL8:20 amPhiladelphia
4h 18m
1 stop
IAD12:38 pmWashington, D.C. Dulles Intl
$259
American Airlines
Jul 8
IAD6:33 amWashington, D.C. Dulles Intl
6h 10m
1 stop
PHL12:43 pmPhiladelphia
Jul 11
PHL8:20 amPhiladelphia
4h 26m
1 stop
IAD12:46 pmWashington, D.C. Dulles Intl
$289
American Airlines
Jul 3
IAD5:03 amWashington, D.C. Dulles Intl
4h 38m
1 stop
PHL9:41 amPhiladelphia
Jul 4
PHL8:20 amPhiladelphia
4h 26m
1 stop
IAD12:46 pmWashington, D.C. Dulles Intl
$319

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Philadelphia 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, momondo users made 832,500 searches. Data last updated June 25, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Philadelphia 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

Sat 8/15

6:49 am-7:20 pm

1 stop12h 31m

Philadelphia

Tue 8/18

4:45 pm-10:52 pm

1 stop6h 07m

$167

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 8/11

8:33 pm-7:15 am

1 stop10h 42m

Philadelphia

Tue 8/18

4:45 pm-10:52 pm

1 stop6h 07m

$170

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 8/5

7:48 am-10:28 pm

1 stop14h 40m

Philadelphia

Wed 8/12

6:25 am-5:14 pm

1 stop10h 49m

$171

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 7/21

8:33 pm-7:15 am

1 stop10h 42m

Philadelphia

Tue 7/28

8:30 am-4:40 pm

1 stop8h 10m

$173

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 8/12

7:48 am-10:28 pm

1 stop14h 40m

Philadelphia

Sat 8/15

9:51 am-4:34 pm

1 stop6h 43m

$174

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 8/5

8:33 pm-7:15 am

1 stop10h 42m

Philadelphia

Wed 8/12

4:30 pm-10:55 pm

1 stop6h 25m

$181
Quickest round-trip

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 10/17

7:00 am-1:12 pm

1 stop6h 12m

Philadelphia

Wed 10/21

5:38 pm-12:28 am

1 stop6h 50m

$182

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sun 8/9

8:33 pm-7:15 am

1 stop10h 42m

Philadelphia

Sat 8/22

4:45 pm-10:52 pm

1 stop6h 07m

$186

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sun 8/9

8:33 pm-7:15 am

1 stop10h 42m

Philadelphia

Tue 8/18

4:45 pm-10:52 pm

1 stop6h 07m

$187

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 7/17

8:33 pm-8:39 am

1 stop12h 06m

Philadelphia

Tue 7/21

8:30 am-4:40 pm

1 stop8h 10m

$188

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Philadelphia?

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Washington, D.C. Dulles Intl Airport is in November. Flight prices, which tend to average around $184, are often lower during this time because this is during the off-season. The month of May is another great option to travel to Philadelphia, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $270.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Philadelphia is on a Friday. Travelers who choose to depart for Philadelphia on a Friday will often find tickets for as low as $464. On the other hand, Tuesday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $673.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the morning. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Philadelphia in the morning for as low as $453. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the afternoon when prices are around $654.

What is the cheapest Washington, D.C. Dulles Intl to Philadelphia flight route?

Fly from Washington, D.C. Dulles Intl to Philadelphia for the best Washington, D.C. Dulles Intl - Philadelphia flight prices

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Philadelphia flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Philadelphia flights?

You could potentially save up to 70% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Philadelphia flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Philadelphia (IAD to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Philadelphia

Best Price Found

$256

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from Washington, D.C. Dulles Intl Airport in the past 72 hours is $256. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Philadelphia found on momondo in the last 72 hours is $309.
The fastest flight from Washington, D.C. Dulles Intl Airport to Philadelphia takes 1h 10m
Direct flights go from Washington, D.C. Dulles Intl Airport to Philadelphia every day.
There is 1 airport in Philadelphia. From Washington, D.C. Dulles Intl Airport there are direct flights to Philadelphia (PHL).
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Philadelphia

  • How far is Washington, D.C. Dulles Intl to Philadelphia by plane?

    The distance between Washington, D.C. Dulles Intl and Philadelphia is about 140.7 mi. Typically, this will take 1h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Philadelphia Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Philadelphia Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Philadelphia Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Philadelphia Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Philadelphia?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Philadelphia?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Philadelphia

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $194Free CancellationRating
7.4
9,887 reviews
Search United Airlines flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Philadelphia

    United Airlines is one of the most popular airlines flying from Washington, D.C. Dulles Intl Airport to Philadelphia, operating 13 flights/week on average for this route. A good United Airlines flight deal for Washington, D.C. Dulles Intl Airport to Philadelphia starts from $194 round-trip, up to an average price of $473. Our users have rated United Airlines at 7.4/10.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Rehoboth Beach
Cape May
Wildwood Crest
Ocean City
Cherry Hill
King of Prussia
Newark
Reading
Dewey Beach
Dover
North Wildwood
Essington
Avalon
New Castle
Lewes
Stone Harbor
Vineland
Chester
Pottstown

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Philadelphia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Philadelphia. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Philadelphia with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Philadelphia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Philadelphia?

momondo provides multiple filters to help you find the best flight to Philadelphia from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Philadelphia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Philadelphia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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