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Cheap flights from Washington, D.C. Dulles Intl Airport to Philadelphia from $89

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 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
7:05 pm - 4:26 pm
IAD
-
PHL
21h 21m
1 stop
Multiple Airlines Logo
7:46 pm - 7:20 am
PHL
-
IAD
11h 34m
1 stop
$142Multiple Airlines
Mon, Feb 23 - Wed, Mar 11
Frontier Logo
8:09 am - 3:27 pm
IAD
-
PHL
7h 18m
1 stop
Frontier Logo
7:56 pm - 7:27 am
PHL
-
IAD
11h 31m
1 stop
$161Frontier
Sat, May 9 - Wed, May 13
Multiple Airlines Logo
11:22 am - 6:11 pm
IAD
-
PHL
6h 49m
1 stop
Multiple Airlines Logo
7:46 pm - 7:20 am
PHL
-
IAD
11h 34m
1 stop
$162Multiple Airlines
Thu, Mar 5 - Wed, Mar 11
Frontier Logo
7:05 pm - 11:11 am
IAD
-
PHL
16h 06m
1 stop
Frontier Logo
9:17 am - 12:31 am
PHL
-
IAD
15h 14m
1 stop
$165Frontier
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
11:22 am - 6:11 pm
IAD
-
PHL
6h 49m
1 stop
Multiple Airlines Logo
7:46 pm - 7:20 am
PHL
-
IAD
11h 34m
1 stop
$176Multiple Airlines
Thu, Feb 26 - Wed, Mar 11
United Airlines Logo
8:31 am - 9:48 am
IAD
-
PHL
1h 17mnonstop
United Airlines Logo
7:45 pm - 8:58 pm
PHL
-
IAD
1h 13mnonstop
$179United Airlines
Sun, Feb 22 - Fri, Mar 13
Multiple Airlines Logo
11:22 am - 11:50 pm
IAD
-
PHL
12h 28m
2 stops
Multiple Airlines Logo
7:46 pm - 7:20 am
PHL
-
IAD
11h 34m
1 stop
$181Multiple Airlines
Thu, Mar 5 - Wed, Mar 11
Frontier Logo
6:30 am - 12:52 am
IAD
-
PHL
18h 22m
1 stop
Frontier Logo
10:28 pm - 7:24 am
PHL
-
IAD
8h 56m
1 stop
$186Frontier
Thu, Mar 12 - Sun, Mar 15
Multiple Airlines Logo
8:09 am - 4:36 pm
IAD
-
PHL
8h 27m
1 stop
Multiple Airlines Logo
7:56 pm - 7:27 am
PHL
-
IAD
11h 31m
1 stop
$190Multiple Airlines
Fri, May 8 - Wed, May 13
Frontier Logo
6:15 am - 6:05 pm
IAD
-
PHL
11h 50m
1 stop
Frontier Logo
7:10 pm - 12:36 am
PHL
-
IAD
29h 26m
1 stop
$191Frontier
Fri, Apr 3 - Wed, Apr 8

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Philadelphia flight tickets
United Airlines
Feb 22
IAD8:31 amWashington, D.C. Dulles Intl
1h 17m
PHL9:48 amPhiladelphia
Mar 13
PHL7:45 pmPhiladelphia
1h 13m
IAD8:58 pmWashington, D.C. Dulles Intl
$179
United Airlines
Feb 15
IAD12:55 pmWashington, D.C. Dulles Intl
1h 15m
PHL2:10 pmPhiladelphia
Feb 21
PHL8:02 pmPhiladelphia
1h 14m
IAD9:16 pmWashington, D.C. Dulles Intl
$194
United Airlines
Feb 17
IAD8:31 amWashington, D.C. Dulles Intl
1h 17m
PHL9:48 amPhiladelphia
Feb 21
PHL8:02 pmPhiladelphia
1h 14m
IAD9:16 pmWashington, D.C. Dulles Intl
$209

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
May 9
IAD8:09 amWashington, D.C. Dulles Intl
7h 18m
1 stop
PHL3:27 pmPhiladelphia
May 13
PHL7:56 pmPhiladelphia
11h 31m
1 stop
IAD7:27 amWashington, D.C. Dulles Intl
$161
Frontier
Mar 2
IAD7:05 pmWashington, D.C. Dulles Intl
16h 06m
1 stop
PHL11:11 amPhiladelphia
Mar 9
PHL9:17 amPhiladelphia
15h 14m
1 stop
IAD12:31 amWashington, D.C. Dulles Intl
$165
Frontier
Mar 12
IAD6:30 amWashington, D.C. Dulles Intl
18h 22m
1 stop
PHL12:52 amPhiladelphia
Mar 15
PHL10:28 pmPhiladelphia
8h 56m
1 stop
IAD7:24 amWashington, D.C. Dulles Intl
$186

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 February 3, 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

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 2/23

7:05 pm-4:26 pm

1 stop21h 21m

Philadelphia

Wed 3/11

7:46 pm-7:20 am

1 stop11h 34m

$142

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 5/9

8:09 am-3:27 pm

1 stop7h 18m

Philadelphia

Wed 5/13

7:56 pm-7:27 am

1 stop11h 31m

$161

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 3/5

11:22 am-6:11 pm

1 stop6h 49m

Philadelphia

Wed 3/11

7:46 pm-7:20 am

1 stop11h 34m

$162

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 3/2

7:05 pm-11:11 am

1 stop16h 06m

Philadelphia

Mon 3/9

9:17 am-12:31 am

1 stop15h 14m

$165

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 2/26

11:22 am-6:11 pm

1 stop6h 49m

Philadelphia

Wed 3/11

7:46 pm-7:20 am

1 stop11h 34m

$176

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sun 2/22

8:31 am-9:48 am

Nonstop1h 17m

Philadelphia

Fri 3/13

7:45 pm-8:58 pm

Nonstop1h 13m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 3/5

11:22 am-11:50 pm

2 stops12h 28m

Philadelphia

Wed 3/11

7:46 pm-7:20 am

1 stop11h 34m

$181

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 3/12

6:30 am-12:52 am

1 stop18h 22m

Philadelphia

Sun 3/15

10:28 pm-7:24 am

1 stop8h 56m

$186

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 5/8

8:09 am-4:36 pm

1 stop8h 27m

Philadelphia

Wed 5/13

7:56 pm-7:27 am

1 stop11h 31m

$190

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 4/3

6:15 am-6:05 pm

1 stop11h 50m

Philadelphia

Wed 4/8

7:10 pm-12:36 am

1 stop29h 26m

$191

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 cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Washington, D.C. Dulles Intl Airport is in June. Flight prices, which tend to average around $179, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Philadelphia, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $184.

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 $496. On the other hand, Sunday 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 $719.

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 at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Philadelphia at noon for as low as $494. 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 $778.

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 to Philadelphia flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl 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 78% 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

$433

Fastest flight time

1h 14m

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 $433. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Philadelphia found on momondo in the last 72 hours is $427.
The fastest flight from Washington, D.C. Dulles Intl Airport to Philadelphia takes 1h 14m
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

  • 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 14m 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 $179Free CancellationRating
7.4
9,229 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 14 flights/week on average for this route. A good United Airlines flight deal for Washington, D.C. Dulles Intl Airport to Philadelphia starts from $179 round-trip, up to an average price of $413. 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
Cape May
Rehoboth Beach
Wildwood Crest
Ocean City
King of Prussia
Cherry Hill
Newark
Dewey Beach
Reading
North Wildwood
Avalon
Dover
Lewes
Stone Harbor
Essington
Vineland
New Castle
Elkton
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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