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Cheap flights from Philadelphia to Washington, D.C. from $44

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:40 pm - 11:11 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
16h 31m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:33 pm - 12:39 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
26h 06m1 stop Atlanta Hartsfield-Jackson
$111Frontier
Tue, Dec 8 - Wed, Dec 16
Frontier Logo
6:40 pm - 11:11 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
16h 31m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:33 pm - 12:39 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
26h 06m1 stop Atlanta Hartsfield-Jackson
$116Frontier
Mon, Dec 7 - Wed, Dec 16
Frontier Logo
6:40 pm - 11:11 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
16h 31m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:33 pm - 9:07 pmIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
22h 34m1 stop Atlanta Hartsfield-Jackson
$118Frontier
Tue, Dec 8 - Sun, Dec 13
Frontier Logo
6:40 pm - 11:11 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
16h 31m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:06 pm - 11:05 pmIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
10h 59m1 stop Atlanta Hartsfield-Jackson
$119Frontier
Tue, Dec 8 - Tue, Dec 15
United Airlines Logo
6:00 am - 7:13 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
1h 13mnonstop
United Airlines Logo
8:36 am - 9:49 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
1h 13mnonstop
$284United Airlines
Thu, Nov 26 - Thu, Nov 26
United Airlines Logo
6:00 am - 7:07 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
1h 07mnonstop
United Airlines Logo
10:15 pm - 11:30 pmIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
1h 15mnonstop
$289United Airlines
Sun, Nov 8 - Sun, Nov 15
American Airlines Logo
7:35 pm - 9:00 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 25mnonstop
American Airlines Logo
4:59 pm - 6:13 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 14mnonstop
$289American Airlines
Sat, Nov 7 - Sat, Nov 14
American Airlines Logo
3:46 pm - 5:19 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 33mnonstop
American Airlines Logo
5:26 pm - 6:38 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 12mnonstop
$289American Airlines
Wed, Jan 20 - Sat, Jan 23
American Airlines Logo
8:47 pm - 9:59 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 12mnonstop
American Airlines Logo
5:10 pm - 6:24 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 14mnonstop
$289American Airlines
Sat, Oct 31 - Sun, Nov 1
American Airlines Logo
7:32 pm - 8:59 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 27mnonstop
American Airlines Logo
1:40 pm - 2:51 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 11mnonstop
$289American Airlines
Fri, Mar 12 - Sun, Mar 14

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Frontier flights from Philadelphia to Washington, D.C.

Our best Frontier deals on Philadelphia to Washington, D.C. flight tickets
Frontier
Dec 8
PHL6:40 pmPhiladelphia
16h 31m
1 stop
IAD11:11 amWashington, D.C. Dulles Intl
Dec 16
IAD10:33 pmWashington, D.C. Dulles Intl
26h 06m
1 stop
PHL12:39 amPhiladelphia
$111
Frontier
Dec 7
PHL6:40 pmPhiladelphia
16h 31m
1 stop
IAD11:11 amWashington, D.C. Dulles Intl
Dec 16
IAD10:33 pmWashington, D.C. Dulles Intl
26h 06m
1 stop
PHL12:39 amPhiladelphia
$116
Frontier
Dec 8
PHL6:40 pmPhiladelphia
16h 31m
1 stop
IAD11:11 amWashington, D.C. Dulles Intl
Dec 13
IAD10:33 pmWashington, D.C. Dulles Intl
22h 34m
1 stop
PHL9:07 pmPhiladelphia
$118

United Airlines flights from Philadelphia to Washington, D.C.

Our best United Airlines deals on Philadelphia to Washington, D.C. flight tickets
United Airlines
Oct 23
PHL7:30 pmPhiladelphia
1h 19m
IAD8:49 pmWashington, D.C. Dulles Intl
Oct 25
IAD8:36 amWashington, D.C. Dulles Intl
1h 13m
PHL9:49 amPhiladelphia
$334
United Airlines
Oct 22
PHL10:40 amPhiladelphia
1h 09m
IAD11:49 amWashington, D.C. Dulles Intl
Oct 25
IAD10:15 pmWashington, D.C. Dulles Intl
1h 15m
PHL11:30 pmPhiladelphia
$349
United Airlines
Oct 23
PHL7:30 pmPhiladelphia
1h 19m
IAD8:49 pmWashington, D.C. Dulles Intl
Oct 25
IAD8:36 amWashington, D.C. Dulles Intl
1h 13m
PHL9:49 amPhiladelphia
$424

momondo Fare Finder

 
Use the filters below to find and compare flights from Philadelphia to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Tue 12/8

6:40 pm-11:11 am

1 stop16h 31m

Washington, D.C. Dulles Intl

Wed 12/16

10:33 pm-12:39 am

1 stop26h 06m

$111

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Mon 12/7

6:40 pm-11:11 am

1 stop16h 31m

Washington, D.C. Dulles Intl

Wed 12/16

10:33 pm-12:39 am

1 stop26h 06m

$116

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Tue 12/8

6:40 pm-11:11 am

1 stop16h 31m

Washington, D.C. Dulles Intl

Sun 12/13

10:33 pm-9:07 pm

1 stop22h 34m

$118

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Tue 12/8

6:40 pm-11:11 am

1 stop16h 31m

Washington, D.C. Dulles Intl

Tue 12/15

12:06 pm-11:05 pm

1 stop10h 59m

$119

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Thu 11/26

6:00 am-7:13 am

Nonstop1h 13m

Washington, D.C. Dulles Intl

Thu 11/26

8:36 am-9:49 am

Nonstop1h 13m

$284
Quickest round-trip

PhiladelphiaWashington, D.C.

PHL Philadelphia - IAD Washington, D.C. Dulles Intl

PHLIAD

Philadelphia

Sun 11/8

6:00 am-7:07 am

Nonstop1h 07m

Washington, D.C. Dulles Intl

Sun 11/15

10:15 pm-11:30 pm

Nonstop1h 15m

$289

PhiladelphiaWashington, D.C.

PHL Philadelphia - DCA Washington, D.C. Reagan-National

PHLDCA

Philadelphia

Sat 11/7

7:35 pm-9:00 pm

Nonstop1h 25m

Washington, D.C. Reagan-National

Sat 11/14

4:59 pm-6:13 pm

Nonstop1h 14m

$289

PhiladelphiaWashington, D.C.

PHL Philadelphia - DCA Washington, D.C. Reagan-National

PHLDCA

Philadelphia

Wed 1/20

3:46 pm-5:19 pm

Nonstop1h 33m

Washington, D.C. Reagan-National

Sat 1/23

5:26 pm-6:38 pm

Nonstop1h 12m

$289

PhiladelphiaWashington, D.C.

PHL Philadelphia - DCA Washington, D.C. Reagan-National

PHLDCA

Philadelphia

Sat 10/31

8:47 pm-9:59 pm

Nonstop1h 12m

Washington, D.C. Reagan-National

Sun 11/1

5:10 pm-6:24 pm

Nonstop1h 14m

$289

PhiladelphiaWashington, D.C.

PHL Philadelphia - DCA Washington, D.C. Reagan-National

PHLDCA

Philadelphia

Fri 3/12

7:32 pm-8:59 pm

Nonstop1h 27m

Washington, D.C. Reagan-National

Sun 3/14

1:40 pm-2:51 pm

Nonstop1h 11m

$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 Washington, D.C. from

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

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 Washington, D.C.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Philadelphia, with most prices found around $239. If you’re not able to fly to Washington, D.C. in January, then October is your next best option. Flight prices from Philadelphia to Washington, D.C. during October average around $319.

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

On average, the least expensive day to fly to Washington, D.C. from Philadelphia is on a Friday. momondo users have found tickets for Friday departures for as low as $715. However, this price may fluctuate depending on the airline, the season, and holidays. 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. for around $1,026.

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

In the morning is the cheapest time of day to fly from Philadelphia to Washington, D.C. when you can find flight prices for as low as $718. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $1,216. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

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

You could potentially save up to 13% on your flight if you consider stops on a Philadelphia to Washington, D.C. flight.

How have Philadelphia to Washington, D.C. flight prices changed over time?

As of October 2026, prices for Philadelphia to Washington, D.C. flights are approximately 127% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Washington, D.C. 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. (PHL to WAS) flight deals and tips

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

Best Price Found

$44

Fastest flight time

0h 55m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Philadelphia in the past 72 hours is $44. The best round-trip flight deal from Philadelphia to Washington, D.C. found on momondo in the last 72 hours is $111.
The fastest flight from Philadelphia to Washington, D.C. takes 0h 55m
Direct flights go from Philadelphia to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Philadelphia there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).
Search flight deals

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

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

    Philadelphia and Washington, D.C. are 123.7 mi apart from one another. Typically, this will take 0h 55m by plane in normal conditions.

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

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

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

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

    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 Philadelphia Airport to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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.?

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

Best airlines flying from Philadelphia to Washington, D.C.

Compare and see reviews for airlines that fly from Philadelphia to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $179Free CancellationRating
7.0
12,169 reviews
Search American Airlines flights
United AirlinesPriceFrom $239Free CancellationRating
7.4
10,366 reviews
Search United Airlines flights

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

    United Airlines is one of the most popular airlines flying from Philadelphia to Washington, D.C., operating 21 flights/week on average for this route. A good United Airlines flight deal for Philadelphia to Washington, D.C. starts from $239 round-trip, up to an average price of $489. Our users have rated United Airlines at 7.4/10.

  • American Airlines Flights From Philadelphia to Washington, D.C.

    Another popular option for Philadelphia to Washington, D.C. flights is American Airlines (7.0/10, 12,165 ratings). American Airlines flies from Philadelphia to Washington, D.C. around 14 times per week, with deals starting from $179 round-trip and rising to an average price of around $559.

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
Arlington
Gettysburg
Fredericksburg
Waldorf
Laurel
Woodbridge
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Fairfax
Springfield
Edgewood
Glen Burnie
College Park
Colonial Beach
Bethesda

Why use momondo?

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

It is quick and easy to find Philadelphia to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

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

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

Once all potential Philadelphia to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport