Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to Washington, D.C. 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 Philadelphia to Washington, D.C. departing on 6/4. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
11:17 am - 12:31 am
IAD
-
PHL
37h 14m
2 stops
$174Multiple Airlines
Thu, Jun 4 - Wed, Jun 10
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
11:17 am - 10:29 pm
IAD
-
PHL
11h 12m
1 stop
$211Multiple Airlines
Thu, Jun 4 - Wed, Jun 10
Multiple Airlines Logo
6:26 pm - 2:18 pm
PHL
-
IAD
19h 52m
1 stop
Multiple Airlines Logo
7:45 am - 11:29 pm
IAD
-
PHL
15h 44m
2 stops
$215Multiple Airlines
Sun, May 31 - Wed, Jun 3
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
7:35 am - 6:10 pm
IAD
-
PHL
10h 35m
2 stops
$222Multiple Airlines
Thu, Jun 4 - Wed, Jun 10
Multiple Airlines Logo
6:26 pm - 2:18 pm
PHL
-
IAD
19h 52m
1 stop
Multiple Airlines Logo
7:45 am - 7:10 pm
IAD
-
PHL
11h 25m
1 stop
$223Multiple Airlines
Sun, May 31 - Wed, Jun 3
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
8:47 pm - 12:09 pm
IAD
-
PHL
15h 22m
2 stops
$230Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
8:47 pm - 7:12 am
IAD
-
PHL
10h 25m
1 stop
$235Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
United Airlines Logo
7:45 pm - 9:11 pm
PHL
-
IAD
1h 26mnonstop
United Airlines Logo
8:35 am - 9:45 am
IAD
-
PHL
1h 10mnonstop
$239United Airlines
Wed, Jun 3 - Wed, Jun 17
Multiple Airlines Logo
6:27 pm - 2:16 pm
PHL
-
IAD
19h 49m
1 stop
Multiple Airlines Logo
6:26 pm - 3:37 pm
IAD
-
PHL
21h 11m
1 stop
$243Multiple Airlines
Thu, Jun 4 - Wed, Jun 10
Frontier Logo
8:00 am - 8:02 pm
PHL
-
IAD
12h 02m
1 stop
Frontier Logo
7:30 am - 1:17 am
IAD
-
PHL
17h 47m
2 stops
$246Frontier
Wed, Jun 10 - Wed, Jun 17

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

Our best United Airlines deals on Philadelphia to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Jun 3
PHL7:45 pmPhiladelphia
1h 26m
IAD9:11 pmWashington, D.C. Dulles Intl
Jun 17
IAD8:35 amWashington, D.C. Dulles Intl
1h 10m
PHL9:45 amPhiladelphia
$239
United Airlines
May 26
PHL3:10 pmPhiladelphia
1h 08m
IAD4:18 pmWashington, D.C. Dulles Intl
Jun 2
IAD10:34 pmWashington, D.C. Dulles Intl
1h 10m
PHL11:44 pmPhiladelphia
$254
United Airlines
May 29
PHL7:45 pmPhiladelphia
1h 26m
IAD9:11 pmWashington, D.C. Dulles Intl
Jun 1
IAD10:34 pmWashington, D.C. Dulles Intl
1h 10m
PHL11:44 pmPhiladelphia
$269

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
Jun 4
PHL7:35 pmPhiladelphia
4h 38m
1 stop
IAD12:13 amWashington, D.C. Dulles Intl
Jun 7
IAD6:20 amWashington, D.C. Dulles Intl
5h 01m
1 stop
PHL11:21 amPhiladelphia
$259
American Airlines
May 26
PHL1:52 pmPhiladelphia
5h 41m
1 stop
IAD7:33 pmWashington, D.C. Dulles Intl
Jun 2
IAD1:06 pmWashington, D.C. Dulles Intl
5h 39m
1 stop
PHL6:45 pmPhiladelphia
$274
American Airlines
May 29
PHL7:35 pmPhiladelphia
4h 38m
1 stop
IAD12:13 amWashington, D.C. Dulles Intl
Jun 1
IAD6:20 amWashington, D.C. Dulles Intl
5h 01m
1 stop
PHL11:21 amPhiladelphia
$289

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 May 13, 2026.
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

Cheapest round-trip

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Wed 6/10

11:17 am-12:31 am

2 stops37h 14m

$174

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Wed 6/10

11:17 am-10:29 pm

1 stop11h 12m

$211

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Sun 5/31

6:26 pm-2:18 pm

1 stop19h 52m

Washington, D.C. Dulles Intl

Wed 6/3

7:45 am-11:29 pm

2 stops15h 44m

$215

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Wed 6/10

7:35 am-6:10 pm

2 stops10h 35m

$222

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Sun 5/31

6:26 pm-2:18 pm

1 stop19h 52m

Washington, D.C. Dulles Intl

Wed 6/3

7:45 am-7:10 pm

1 stop11h 25m

$223

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Sun 6/7

8:47 pm-12:09 pm

2 stops15h 22m

$230

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Sun 6/7

8:47 pm-7:12 am

1 stop10h 25m

$235
Quickest round-trip

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Wed 6/3

7:45 pm-9:11 pm

Nonstop1h 26m

Washington, D.C. Dulles Intl

Wed 6/17

8:35 am-9:45 am

Nonstop1h 10m

$239

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Thu 6/4

6:27 pm-2:16 pm

1 stop19h 49m

Washington, D.C. Dulles Intl

Wed 6/10

6:26 pm-3:37 pm

1 stop21h 11m

$243

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Wed 6/10

8:00 am-8:02 pm

1 stop12h 02m

Washington, D.C. Dulles Intl

Wed 6/17

7:30 am-1:17 am

2 stops17h 47m

$246

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, September is the cheapest month to fly from Philadelphia to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $239.

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

Our data shows that Monday 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 $783. When flying out on a Saturday, 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 $1,063.

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 $773 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 $1,176 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

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

You could potentially save up to 75% 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

$423

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 $423. The best round-trip flight deal from Philadelphia to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $759.
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

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

  • 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 $213Free CancellationRating
7.4
9,706 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 17 times per week, with 9,706 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 $213 (round-trip), much lower than the average airfare cost of $441 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
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Towson
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

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.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 6/12
Fri 6/19
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.