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Cheap flights from Philadelphia to Washington, D.C. from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Washington, D.C. departing on 1/17. 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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0 bags

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Cheap round-trip flights

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Frontier Logo
7:12 pm - 11:28 am
PHL
-
IAD
16h 16m1 stop
Frontier Logo
6:00 am - 4:28 pm
IAD
-
PHL
10h 28m1 stop
$132Frontier
Wed, Jan 7 - Wed, Jan 14
Frontier Logo
9:45 am - 1:16 pm
PHL
-
IAD
27h 31m1 stop
Frontier Logo
10:08 pm - 10:46 am
IAD
-
PHL
12h 38m1 stop
$134Frontier
Fri, Jan 9 - Fri, Jan 16
Frontier Logo
6:00 am - 7:58 pm
PHL
-
IAD
13h 58m1 stop
Frontier Logo
10:08 pm - 12:42 am
IAD
-
PHL
26h 34m1 stop
$137Frontier
Fri, Jan 16 - Mon, Jan 19
Multiple Airlines Logo
8:43 pm - 7:55 am
PHL
-
IAD
11h 12m1 stop
Multiple Airlines Logo
6:00 am - 6:46 pm
IAD
-
PHL
12h 46m1 stop
$149Multiple Airlines
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
8:43 pm - 7:55 am
PHL
-
IAD
11h 12m1 stop
Multiple Airlines Logo
6:00 am - 4:49 pm
IAD
-
PHL
10h 49m2 stops
$159Multiple Airlines
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
9:45 am - 1:16 pm
PHL
-
IAD
27h 31m1 stop
Multiple Airlines Logo
6:00 am - 1:01 am
IAD
-
PHL
19h 01m2 stops
$172Multiple Airlines
Fri, Jan 9 - Fri, Jan 16
United Airlines Logo
3:01 pm - 4:18 pm
PHL
-
IAD
1h 17mnonstop
United Airlines Logo
12:55 pm - 2:10 pm
IAD
-
PHL
1h 15mnonstop
$179United Airlines
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
8:43 pm - 8:38 am
PHL
-
IAD
11h 55m1 stop
Multiple Airlines Logo
5:50 pm - 11:14 am
IAD
-
PHL
17h 24m1 stop
$181Multiple Airlines
Fri, Jan 16 - Sun, Jan 18
Multiple Airlines Logo
6:00 am - 7:58 pm
PHL
-
IAD
13h 58m1 stop
Multiple Airlines Logo
10:08 pm - 11:14 am
IAD
-
PHL
13h 06m2 stops
$182Multiple Airlines
Fri, Jan 16 - Mon, Jan 19
United Airlines Logo
6:00 am - 7:15 am
PHL
-
IAD
1h 15mnonstop
United Airlines Logo
10:20 pm - 11:30 pm
IAD
-
PHL
1h 10mnonstop
$209United Airlines
Wed, Dec 24 - Sat, Dec 27

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

Our best Frontier deals on Philadelphia to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Jan 7
PHL7:12 pmPhiladelphia
16h 16m
1 stop
IAD11:28 amWashington, D.C. Dulles Intl
Jan 14
IAD6:00 amWashington, D.C. Dulles Intl
10h 28m
1 stop
PHL4:28 pmPhiladelphia
$132
Find similar
Frontier
Jan 9
PHL9:45 amPhiladelphia
27h 31m
1 stop
IAD1:16 pmWashington, D.C. Dulles Intl
Jan 16
IAD10:08 pmWashington, D.C. Dulles Intl
12h 38m
1 stop
PHL10:46 amPhiladelphia
$134
Find similar
Frontier
Jan 16
PHL6:00 amPhiladelphia
13h 58m
1 stop
IAD7:58 pmWashington, D.C. Dulles Intl
Jan 19
IAD10:08 pmWashington, D.C. Dulles Intl
26h 34m
1 stop
PHL12:42 amPhiladelphia
$137
Find similar

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

Our best American Airlines deals on Philadelphia to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Jan 6
PHL6:05 pmPhiladelphia
5h 07m
1 stop
IAD11:12 pmWashington, D.C. Dulles Intl
Jan 13
IAD1:08 pmWashington, D.C. Dulles Intl
4h 47m
1 stop
PHL5:55 pmPhiladelphia
$259
Find similar
American Airlines
Mar 17
PHL1:48 pmPhiladelphia
6h 42m
1 stop
IAD8:30 pmWashington, D.C. Dulles Intl
Mar 22
IAD5:00 amWashington, D.C. Dulles Intl
4h 55m
1 stop
PHL9:55 amPhiladelphia
$334
Find similar
American Airlines
Dec 13
PHL6:04 pmPhiladelphia
5h 57m
1 stop
IAD12:01 amWashington, D.C. Dulles Intl
Dec 14
IAD6:25 amWashington, D.C. Dulles Intl
5h 43m
1 stop
PHL12:08 pmPhiladelphia
$359
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Washington, D.C. Dulles Intl Airport 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 December 11, 2025.
Use the filters below to find and compare flights from Philadelphia to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Wed 1/7

7:12 pm-11:28 am

1 stop16h 16m

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-4:28 pm

1 stop10h 28m

$132

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Fri 1/9

9:45 am-1:16 pm

1 stop27h 31m

Washington, D.C. Dulles Intl

Fri 1/16

10:08 pm-10:46 am

1 stop12h 38m

$134

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Fri 1/16

6:00 am-7:58 pm

1 stop13h 58m

Washington, D.C. Dulles Intl

Mon 1/19

10:08 pm-12:42 am

1 stop26h 34m

$137

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 1/8

8:43 pm-7:55 am

1 stop11h 12m

Washington, D.C. Dulles Intl

Thu 1/15

6:00 am-6:46 pm

1 stop12h 46m

$149

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 1/8

8:43 pm-7:55 am

1 stop11h 12m

Washington, D.C. Dulles Intl

Thu 1/15

6:00 am-4:49 pm

2 stops10h 49m

$159

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Fri 1/9

9:45 am-1:16 pm

1 stop27h 31m

Washington, D.C. Dulles Intl

Fri 1/16

6:00 am-1:01 am

2 stops19h 01m

$172

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Wed 1/7

3:01 pm-4:18 pm

Nonstop1h 17m

Washington, D.C. Dulles Intl

Wed 1/14

12:55 pm-2:10 pm

Nonstop1h 15m

$179

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Fri 1/16

8:43 pm-8:38 am

1 stop11h 55m

Washington, D.C. Dulles Intl

Sun 1/18

5:50 pm-11:14 am

1 stop17h 24m

$181

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Fri 1/16

6:00 am-7:58 pm

1 stop13h 58m

Washington, D.C. Dulles Intl

Mon 1/19

10:08 pm-11:14 am

2 stops13h 06m

$182

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Wed 12/24

6:00 am-7:15 am

Nonstop1h 15m

Washington, D.C. Dulles Intl

Sat 12/27

10:20 pm-11:30 pm

Nonstop1h 10m

$209

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 Washington, D.C. from

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

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 day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $765. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Washington, D.C. Dulles Intl Airport for around $1,009.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Philadelphia in the morning is the least expensive time of day to depart. momondo users have found prices as low as $835 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,203 on average. Flights to Washington, D.C. Dulles Intl Airport from Philadelphia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

There are 4 cabin classes available to choose from on Philadelphia to Washington, D.C. Dulles Intl 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 Philadelphia to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 62% on your flight if you consider stops on a Philadelphia to Washington, D.C. Dulles Intl Airport flight.

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

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

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

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

Best Price Found

$283

Fastest flight time

1h 08m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Philadelphia in the past 72 hours is $283. The best round-trip flight deal from Philadelphia to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $532.
The fastest flight from Philadelphia to Washington, D.C. Dulles Intl Airport takes 1h 08m
Direct flights go from Philadelphia to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    The straight-line distance from Philadelphia to Washington, D.C. Dulles Intl is 140.7 mi. 1h 08m is a normal flight duration for this route.

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

    Prices for flights from Philadelphia Airport to Washington, D.C. Dulles Intl Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Philadelphia to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $189Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights

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

    United Airlines flies from Philadelphia to Washington, D.C. Dulles Intl Airport around 15 times per week, with 9,095 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Philadelphia to Washington, D.C. Dulles Intl Airport in the last 72 hours was $189 (round-trip), much lower than the average airfare cost of $356 for United Airlines flights on this route.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Philadelphia with this policy.

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

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

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

Price alerts on flights to Washington, D.C. from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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