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Cheap flights from Washington, D.C. Dulles Intl Airport to Philadelphia from $77

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 10/28. 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

Frontier Logo
7:00 am - 5:27 pmIAD-PHL
10h 27m1 stop
Frontier Logo
5:15 am - 6:14 pmPHL-IAD
12h 59m1 stop
$152Frontier
Find Deal
Sat, Sep 13 - Sun, Sep 14
Frontier Logo
7:00 am - 5:27 pmIAD-PHL
10h 27m1 stop
Frontier Logo
5:15 am - 6:14 pmPHL-IAD
12h 59m1 stop
$153Frontier
Find Deal
Sat, Sep 13 - Sun, Sep 14
Frontier Logo
1:55 pm - 12:57 amIAD-PHL
11h 02m1 stop
Frontier Logo
5:15 am - 6:24 pmPHL-IAD
13h 09m1 stop
$154Frontier
Find Deal
Thu, Sep 11 - Mon, Sep 15
Frontier Logo
3:15 pm - 12:13 amIAD-PHL
8h 58m1 stop
Frontier Logo
5:15 am - 6:14 pmPHL-IAD
12h 59m1 stop
$159Frontier
Find Deal
Fri, Sep 12 - Sun, Sep 14
Frontier Logo
9:09 pm - 1:55 pmIAD-PHL
16h 46m1 stop
Frontier Logo
5:15 am - 6:14 pmPHL-IAD
12h 59m1 stop
$161Frontier
Find Deal
Fri, Sep 19 - Sun, Sep 21
Logo
3:15 pm - 8:55 pmIAD-PHL
29h 40m1 stop
Logo
4:03 pm - 2:25 pmPHL-IAD
22h 22m1 stop
$178
Find Deal
Thu, Sep 11 - Sun, Sep 14
United Airlines Logo
8:21 am - 9:33 amIAD-PHL
1h 12mnonstop
United Airlines Logo
3:00 pm - 4:07 pmPHL-IAD
1h 07mnonstop
$179United Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
Logo
8:19 pm - 9:46 amIAD-PHL
13h 27m1 stop
Logo
4:03 pm - 2:25 pmPHL-IAD
22h 22m1 stop
$215
Find Deal
Mon, Sep 1 - Thu, Sep 4
United Airlines Logo
8:21 am - 9:33 amIAD-PHL
1h 12mnonstop
United Airlines Logo
7:58 pm - 9:05 pmPHL-IAD
1h 07mnonstop
$236United Airlines
Find Deal
Thu, Sep 11 - Mon, Sep 15
American Airlines Logo
2:21 pm - 7:16 pmIAD-PHL
4h 55m1 stop
American Airlines Logo
8:13 am - 1:51 pmPHL-IAD
5h 38m1 stop
$289American Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23

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
Sep 16
IAD8:21 amWashington, D.C. Dulles Intl
1h 12m
PHL9:33 amPhiladelphia
Sep 23
PHL3:00 pmPhiladelphia
1h 07m
IAD4:07 pmWashington, D.C. Dulles Intl
$179
Find similar
United Airlines
Sep 11
IAD8:21 amWashington, D.C. Dulles Intl
1h 12m
PHL9:33 amPhiladelphia
Sep 15
PHL7:58 pmPhiladelphia
1h 07m
IAD9:05 pmWashington, D.C. Dulles Intl
$236
Find similar
United Airlines
Sep 9
IAD8:21 amWashington, D.C. Dulles Intl
1h 12m
PHL9:33 amPhiladelphia
Sep 16
PHL7:58 pmPhiladelphia
1h 07m
IAD9:05 pmWashington, D.C. Dulles Intl
$239
Find similar

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
Sep 16
IAD2:21 pmWashington, D.C. Dulles Intl
4h 55m
1 stop
PHL7:16 pmPhiladelphia
Sep 23
PHL8:13 amPhiladelphia
5h 38m
1 stop
IAD1:51 pmWashington, D.C. Dulles Intl
$289
Find similar
American Airlines
Aug 29
IAD8:19 pmWashington, D.C. Dulles Intl
3h 48m
1 stop
PHL12:07 amPhiladelphia
Aug 31
PHL1:43 pmPhiladelphia
5h 59m
1 stop
IAD7:42 pmWashington, D.C. Dulles Intl
$459
Find similar
American Airlines
Sep 2
IAD4:36 pmWashington, D.C. Dulles Intl
18h 01m
2 stops
PHL10:37 amPhiladelphia
Sep 4
PHL6:30 amPhiladelphia
7h 21m
2 stops
IAD1:51 pmWashington, D.C. Dulles Intl
$471
Find similar

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 August 20, 2025.
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

Sat 9/13

7:00 am-5:27 pm

1 stop10h 27m

Philadelphia

Sun 9/14

5:15 am-6:14 pm

1 stop12h 59m

$152

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 9/13

7:00 am-5:27 pm

1 stop10h 27m

Philadelphia

Sun 9/14

5:15 am-6:14 pm

1 stop12h 59m

$153

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 9/11

1:55 pm-12:57 am

1 stop11h 02m

Philadelphia

Mon 9/15

5:15 am-6:24 pm

1 stop13h 09m

$154

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 9/12

3:15 pm-12:13 am

1 stop8h 58m

Philadelphia

Sun 9/14

5:15 am-6:14 pm

1 stop12h 59m

$159

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 9/19

9:09 pm-1:55 pm

1 stop16h 46m

Philadelphia

Sun 9/21

5:15 am-6:14 pm

1 stop12h 59m

$161

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 9/11

3:15 pm-8:55 pm

1 stop29h 40m

Philadelphia

Sun 9/14

4:03 pm-2:25 pm

1 stop22h 22m

$178

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 9/16

8:21 am-9:33 am

Nonstop1h 12m

Philadelphia

Tue 9/23

3:00 pm-4:07 pm

Nonstop1h 07m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 9/1

8:19 pm-9:46 am

1 stop13h 27m

Philadelphia

Thu 9/4

4:03 pm-2:25 pm

1 stop22h 22m

$215

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 9/11

8:21 am-9:33 am

Nonstop1h 12m

Philadelphia

Mon 9/15

7:58 pm-9:05 pm

Nonstop1h 07m

$236

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Tue 9/16

2:21 pm-7:16 pm

1 stop4h 55m

Philadelphia

Tue 9/23

8:13 am-1:51 pm

1 stop5h 38m

$289

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 February. Flight prices, which tend to average around $179, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Philadelphia, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $199.

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 $551. 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 $767.

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 $485. 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 $843.

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 15% 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

$413

Fastest flight time

1h 11m

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 $413. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Philadelphia found on momondo in the last 72 hours is $473.
The fastest flight from Washington, D.C. Dulles Intl Airport to Philadelphia takes 1h 11m
Direct flights go from Washington, D.C. Dulles Intl Airport to Philadelphia every day.
There is 1 airport near Philadelphia: 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 11m 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
8,928 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 16 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 $325. 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
Ocean City
Wildwood Crest
King of Prussia
Reading
Dewey Beach
Newark
North Wildwood
Cherry Hill
Lewes
Dover
Avalon
Stone Harbor
Vineland
Exton
Essington
Pottstown
New Castle

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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