How long is the flight from Philadelphia to Washington, D.C.?

Airlines like Frontier, American Airlines, and United Airlines fly from Philadelphia to Washington, D.C. in about 1h 09m. The time it takes to get you to your destination can typically vary by up to 8h 09m. Airlines will cover a distance of 134 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Philadelphia to Washington, D.C. round-trip?

Cheapflights users have booked flights from Philadelphia to Washington, D.C. round-trip from $179. Another airline that can offer you cheap pricing is United Airlines.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Philadelphia to Washington, D.C.?

The most popular route from Philadelphia to Washington, D.C. is Philadelphia - Washington, D.C. Reagan-National. You may also consider Philadelphia - Washington, D.C. Dulles Intl or Philadelphia - Baltimore/Washington.

What are the cheapest flights from Philadelphia to Washington, D.C.?

On average you can expect to pay $847 for a flight from Philadelphia to Washington, D.C.. The cheapest flight overall is $233 while the most popular route, (Philadelphia - Washington, D.C. Reagan-National) is currently priced at $251.

What are the most reliable airlines from Philadelphia to Washington, D.C.?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Washington, D.C. on time: ANA (89%), Republic Airways (87%), Ethiopian Air (85%).

Most accurate provider : When it comes to deals on Philadelphia-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Philadelphia-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Philadelphia to Washington, D.C.?

Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Washington, D.C.. 2 airlines have flights from Philadelphia to Washington, D.C. on a regular basis. Booking flights from Philadelphia to Washington, D.C. should not be difficult; the airport handles an average of 9 outbound flights to Washington, D.C. per day.

Can I find deals for flights from Philadelphia to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Philadelphia to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Philadelphia to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Washington, D.C..

Can I find deals for business class flights from Philadelphia to Washington, D.C.?

Yes. Cheapflights offers flight deals from Philadelphia to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$75+ Cheap Flights from Philadelphia to Washington, D.C.

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Cheap flight deals from Philadelphia to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Philadelphia to Washington, D.C.
Explore the most affordable flight options available from Philadelphia to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

Wed 9/2312:40 pm -

1 stop9h 18m

Wed 9/308:19 am -

1 stop24h 22m

Deal found 8/8

$158

Wed 9/238:41 am -

1 stop8h 37m

Wed 9/303:11 pm -

1 stop17h 30m

Deal found 8/9

$167

Tue 9/86:30 am -

1 stop5h 54m

Tue 9/1510:22 am -

1 stop7h 52m

Deal found 8/6

$170

Sat 8/298:30 am -

1 stop9h 13m

Sun 8/309:32 pm -

1 stop9h 43m

Deal found 8/9

$176

Sat 8/298:30 am -

1 stop8h 44m

Sun 8/308:39 pm -

1 stop10h 36m

Deal found 8/9

$176

Sat 8/298:30 am -

1 stop9h 13m

Mon 8/316:28 pm -

1 stop12h 47m

Deal found 8/6

$180

Wed 11/49:14 am -

1 stop6h 58m

Sun 11/89:20 pm -

2 stops39h 12m

Deal found 8/9

$182

Thu 8/272:45 pm -

1 stop8h 59m

Sun 8/309:32 pm -

1 stop9h 43m

Deal found 8/6

$186

Sun 9/278:41 am -

1 stop14h 13m

Mon 9/289:25 pm -

1 stop9h 51m

Deal found 8/5

$188

Fri 9/115:32 pm -

1 stop5h 32m

Sun 9/139:25 pm -

1 stop9h 51m

Deal found 8/7

$189

Fri 8/285:05 am -

1 stop11h 02m

Sun 8/308:39 pm -

1 stop10h 36m

Deal found 8/7

$189

Sat 9/56:30 am -

1 stop5h 54m

Sat 9/126:00 am -

1 stop12h 14m

Deal found 8/8

$190

Best flights from Philadelphia to Washington, D.C.
Discover carefully curated flight deals from Philadelphia to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.

Wed 9/2312:40 pm -

1 stop9h 18m

Wed 9/308:19 am -

1 stop24h 22m

Deal found 8/8

$158

Wed 11/45:28 pm -

1 stop6h 43m

Sun 11/810:00 pm -

1 stop11h 04m

Deal found 8/9

$213

Wed 9/237:40 pm -

Nonstop1h 33m

Wed 9/305:18 pm -

Nonstop1h 22m

Deal found 8/8

$249

Thu 9/1710:30 am -

Nonstop1h 09m

Tue 10/61:05 pm -

Nonstop1h 15m

Deal found 8/5

$249

Wed 9/3010:42 am -

1 stop6h 38m

Wed 10/143:45 pm -

1 stop6h 58m

Deal found 8/6

$251

Tue 9/86:30 am -

1 stop5h 54m

Tue 9/1510:22 am -

1 stop7h 52m

Deal found 8/6

$170

Thu 8/272:45 pm -

1 stop8h 59m

Sun 8/309:32 pm -

1 stop9h 43m

Deal found 8/6

$186

Fri 9/115:32 pm -

1 stop5h 32m

Sun 9/139:25 pm -

1 stop9h 51m

Deal found 8/7

$189

Wed 9/2310:30 am -

Nonstop1h 09m

Wed 9/308:30 am -

Nonstop1h 12m

Deal found 8/6

$249

Wed 9/24:59 pm -

1 stop6h 34m

Sat 9/57:38 am -

1 stop8h 31m

Deal found 8/7

$251

Mon 9/76:30 am -

1 stop24h 56m

Mon 9/1412:25 pm -

1 stop22h 37m

Deal found 8/10

$200

Fri 8/283:05 pm -

Nonstop1h 18m

Fri 9/48:30 am -

Nonstop1h 13m

Deal found 8/5

$249

Tue 9/84:59 pm -

1 stop6h 34m

Tue 9/154:35 pm -

1 stop6h 32m

Deal found 8/6

$251

Sat 10/37:30 pm -

Nonstop1h 19m

Sun 10/48:30 am -

Nonstop1h 03m

Deal found 8/8

$249

Wed 9/2310:42 am -

1 stop6h 38m

Wed 9/3011:00 am -

1 stop6h 48m

Deal found 8/9

$251

Fri 8/214:45 pm -

1 stop6h 59m

Tue 8/259:32 pm -

1 stop9h 43m

Deal found 8/6

$223

Sat 9/57:40 pm -

Nonstop1h 21m

Sat 9/121:05 pm -

Nonstop1h 15m

Deal found 8/8

$249

Fri 9/111:55 pm -

1 stop7h 12m

Sun 9/136:00 am -

1 stop6h 54m

Deal found 8/7

$251

Fri 9/47:40 pm -

Nonstop1h 19m

Fri 9/118:30 am -

Nonstop1h 13m

Deal found 8/7

$249

Thu 9/36:30 am -

1 stop5h 54m

Sun 9/69:32 pm -

1 stop22h 56m

Deal found 8/9

$240

Sat 10/316:00 am -

Nonstop1h 13m

Wed 11/410:15 pm -

Nonstop1h 16m

Deal found 8/5

$249

Wed 10/288:15 am -

1 stop6h 43m

Sat 10/314:00 pm -

1 stop7h 39m

Deal found 8/5

$293

Tue 9/83:05 pm -

Nonstop1h 16m

Tue 9/155:36 pm -

Nonstop1h 18m

Deal found 8/6

$249

Fri 8/286:30 am -

1 stop10h 44m

Fri 9/46:20 am -

1 stop16h 13m

Deal found 8/5

$266

Fri 10/910:40 am -

Nonstop1h 09m

Mon 10/128:30 am -

Nonstop1h 13m

Deal found 8/6

$249

Fri 9/1110:30 am -

Nonstop1h 09m

Sun 9/135:36 pm -

Nonstop1h 18m

Deal found 8/7

$256

Fri 8/2110:30 am -

Nonstop1h 09m

Sat 8/228:30 am -

Nonstop1h 13m

Deal found 8/8

$294

Last-minute flights from Philadelphia to Washington, D.C.
Discover last-minute flight deals from Philadelphia to Washington, D.C.. Data last updated August 10, 2026 and is based on user searches.

Thu 8/272:45 pm -

1 stop8h 59m

Sun 8/309:32 pm -

1 stop9h 43m

Deal found 8/6

$186

Fri 8/285:05 am -

1 stop11h 02m

Sun 8/308:39 pm -

1 stop10h 36m

Deal found 8/7

$189

Sat 8/298:30 am -

1 stop9h 13m

Sun 8/309:32 pm -

1 stop9h 43m

Deal found 8/9

$176

Sat 8/298:30 am -

1 stop8h 44m

Sun 8/308:39 pm -

1 stop10h 36m

Deal found 8/9

$176

Sat 8/298:30 am -

1 stop9h 13m

Mon 8/316:28 pm -

1 stop12h 47m

Deal found 8/6

$180

Sat 9/56:30 am -

1 stop5h 54m

Sat 9/126:00 am -

1 stop12h 14m

Deal found 8/8

$190

Tue 9/86:30 am -

1 stop5h 54m

Tue 9/1510:22 am -

1 stop7h 52m

Deal found 8/6

$170

Wed 9/98:41 am -

1 stop8h 37m

Wed 9/163:11 pm -

1 stop17h 30m

Deal found 8/10

$160

Fri 9/115:32 pm -

1 stop5h 32m

Sun 9/139:25 pm -

1 stop9h 51m

Deal found 8/7

$189

Wed 9/2312:40 pm -

1 stop9h 18m

Wed 9/308:19 am -

1 stop24h 22m

Deal found 8/8

$158

Wed 9/238:41 am -

1 stop8h 37m

Wed 9/303:11 pm -

1 stop17h 30m

Deal found 8/9

$167

Sun 9/278:41 am -

1 stop14h 13m

Mon 9/289:25 pm -

1 stop9h 51m

Deal found 8/5

$188

One-way flights from Philadelphia to Washington, D.C.
Search for one-way flight options from Philadelphia to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.

Tue 9/86:40 pm -

1 stop27h 19m

Deal found 8/7

$75

Wed 9/26:40 pm -

1 stop16h 05m

Deal found 8/6

$76

Sat 9/56:30 am -

1 stop10h 44m

Deal found 8/7

$85

Tue 10/67:59 pm -

1 stop26h 00m

Deal found 8/6

$86

Tue 9/298:41 am -

1 stop8h 37m

Deal found 8/6

$86

Sat 9/54:45 pm -

1 stop24h 58m

Deal found 8/9

$88

Wed 9/238:41 am -

1 stop8h 37m

Deal found 8/8

$88

Wed 11/47:10 am -

1 stop11h 26m

Deal found 8/7

$89

Sat 10/177:10 am -

1 stop9h 02m

Deal found 8/5

$90

Mon 10/55:32 pm -

1 stop15h 53m

Deal found 8/8

$92

Sat 10/105:38 pm -

1 stop15h 19m

Deal found 8/9

$93

Tue 9/86:40 pm -

2 stops29h 30m

Deal found 8/6

$93

Find flight deals from Philadelphia to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$144 (Kiwi.com)
One-way from	$75 (Kiwi.com)
Good round-trip deal	$349 or less
Good one-way deal	$293 or less

Provider with most accurate pricing for Philadelphia-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Philadelphia-Washington, D.C. (WAS) flights.

Search Deals

From Philadelphia to Washington, D.C. (WAS)

Search Deals

One-way flight from Philadelphia to Washington, D.C. (WAS)

Search Deals

Price to beat on a round-trip flight from Philadelphia to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Philadelphia to Washington, D.C. (WAS).

Search Deals

Cheapflights 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

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Wed 9/23

12:40 pm-9:58 pm

1 stop9h 18m

Baltimore/Washington

Wed 9/30

8:19 am-8:41 am

1 stop24h 22m

$158

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Tue 9/8

6:30 am-12:24 pm

1 stop5h 54m

Baltimore/Washington

Tue 9/15

10:22 am-6:14 pm

1 stop7h 52m

$170

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Thu 8/27

2:45 pm-11:44 pm

1 stop8h 59m

Baltimore/Washington

Sun 8/30

9:32 pm-7:15 am

1 stop9h 43m

$186

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Fri 9/11

5:32 pm-11:04 pm

1 stop5h 32m

Baltimore/Washington

Sun 9/13

9:25 pm-7:16 am

1 stop9h 51m

$189

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Mon 9/7

6:30 am-7:26 am

1 stop24h 56m

Baltimore/Washington

Mon 9/14

12:25 pm-11:02 am

1 stop22h 37m

$200

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Wed 11/4

5:28 pm-12:11 am

1 stop6h 43m

Baltimore/Washington

Sun 11/8

10:00 pm-9:04 am

1 stop11h 04m

$213

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Fri 8/21

4:45 pm-11:44 pm

1 stop6h 59m

Baltimore/Washington

Tue 8/25

9:32 pm-7:15 am

1 stop9h 43m

$223

PhiladelphiaBaltimore

PHL Philadelphia - BWI Baltimore/Washington

PHLBWI

Philadelphia

Thu 9/3

6:30 am-12:24 pm

1 stop5h 54m

Baltimore/Washington

Sun 9/6

9:32 pm-8:28 pm

1 stop22h 56m

$240

PhiladelphiaWashington, D.C.

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

PHLDCA

Philadelphia

Wed 9/23

7:40 pm-9:13 pm

Nonstop1h 33m

Washington, D.C. Reagan-National

Wed 9/30

5:18 pm-6:40 pm

Nonstop1h 22m

$249

PhiladelphiaWashington, D.C.

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

PHLIAD

Philadelphia

Thu 9/17

10:30 am-11:39 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Tue 10/6

1:05 pm-2:20 pm

Nonstop1h 15m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Showing 1-10 of 57 resultsSorted by cheapest first

...

Compare providers for flights from Philadelphia to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Washington, D.C. in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Philadelphia-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Philadelphia-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Philadelphia with our price prediction graph.

PHL-WAS

PHL-IAD

PHL-DCA

PHL-BWI

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Washington, D.C.

PHL-WAS

PHL-IAD

PHL-DCA

PHL-BWI

What is the cheapest month to book a flight from Philadelphia to Washington, D.C.?

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Washington, D.C. (average of $199). Flying from Philadelphia to Washington, D.C. in May is currently the most expensive (average of $605). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to WAS?

It’s typically best to fly out from Philadelphia to Washington, D.C. in the morning. Doing so could potentially save you 33% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Philadelphia to Washington, D.C.

The most flights from PHL to WAS are scheduled on a Sunday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

What is the cheapest day to fly from Philadelphia to Washington, D.C.?

Travelers seeking maximum savings on their Philadelphia to Washington, D.C. flight should consider departing on Wednesday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Philadelphia to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to Washington, D.C. trip

Our travel experts

Mark Chesnut

Expert on PHL

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Peruse reviews from past customers who have flown with United Airlines and American Airlines from Philadelphia to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,095 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,095 reviews

United Airlines

7.4

Good

10,095 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

American Airlines

7.1

Good

11,897 reviews

United Airlines

7.4

Good

10,095 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

What airport do you fly from for flights from Philadelphia to Washington, D.C.?
Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Washington, D.C.. 2 airlines have flights from Philadelphia to Washington, D.C. on a regular basis. Booking flights from Philadelphia to Washington, D.C. should not be difficult; the airport handles an average of 9 outbound flights to Washington, D.C. per day.
How long is the flight from Philadelphia to Washington, D.C.?
Airlines like Frontier, American Airlines, and United Airlines fly from Philadelphia to Washington, D.C. in about 1h 09m. The time it takes to get you to your destination can typically vary by up to 8h 09m. Airlines will cover a distance of 134 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Philadelphia to Washington, D.C. round-trip?
Cheapflights users have booked flights from Philadelphia to Washington, D.C. round-trip from $179. Another airline that can offer you cheap pricing is United Airlines.
What are the most popular routes from Philadelphia to Washington, D.C.?
The most popular route from Philadelphia to Washington, D.C. is Philadelphia - Washington, D.C. Reagan-National. You may also consider Philadelphia - Washington, D.C. Dulles Intl or Philadelphia - Baltimore/Washington.
What are the most reliable airlines from Philadelphia to Washington, D.C.?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Washington, D.C. on time: ANA (89%), Republic Airways (87%), Ethiopian Air (85%).
What are the cheapest flights from Philadelphia to Washington, D.C.?
On average you can expect to pay $847 for a flight from Philadelphia to Washington, D.C.. The cheapest flight overall is $233 while the most popular route, (Philadelphia - Washington, D.C. Reagan-National) is currently priced at $251.
Can I find deals for flights from Philadelphia to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Philadelphia to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Philadelphia to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Washington, D.C..
Can I find deals for business class flights from Philadelphia to Washington, D.C.?
Yes. Cheapflights offers flight deals from Philadelphia to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Philadelphia to Washington, D.C.?
Currently, October is the cheapest month in which you can book a flight from Philadelphia to Washington, D.C. (average of $199). Flying from Philadelphia to Washington, D.C. in May is currently the most expensive (average of $605). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Springfield

Lanham

Reston

Herndon

Rockville

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Fredericksburg

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Woodbridge

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Alternative routes for Philadelphia to Washington, D.C.

Top 2 airlines flying from Philadelphia to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$179	Average$552	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$239	Average$489	FlexibilityNo cancel fee	On-time69%

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$75+ Cheap flights from Philadelphia (PHL) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Philadelphia to Washington, D.C. with Cheapflights

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Cheap flight deals from Philadelphia to Washington, D.C.

Cheapest flights from Philadelphia to Washington, D.C.Explore the most affordable flight options available from Philadelphia to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

Explore the most affordable flight options available from Philadelphia to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

Best flights from Philadelphia to Washington, D.C.Discover carefully curated flight deals from Philadelphia to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.

Discover carefully curated flight deals from Philadelphia to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.

Last-minute flights from Philadelphia to Washington, D.C.Discover last-minute flight deals from Philadelphia to Washington, D.C.. Data last updated August 10, 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to Washington, D.C.. Data last updated August 10, 2026 and is based on user searches.

One-way flights from Philadelphia to Washington, D.C.Search for one-way flight options from Philadelphia to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.

Search for one-way flight options from Philadelphia to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.

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

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Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Washington, D.C. in August.

Best time to book a flight from Philadelphia to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Philadelphia with our price prediction graph.

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What is the cheapest month to book a flight from Philadelphia to Washington, D.C.?

What is the cheapest time of day to fly from PHL to WAS?

Find hourly flight availability from Philadelphia to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 10, 2026.

It’s typically best to fly out from Philadelphia to Washington, D.C. in the morning. Doing so could potentially save you 33% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Philadelphia to Washington, D.C.

The most flights from PHL to WAS are scheduled on a Sunday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

What is the cheapest day to fly from Philadelphia to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Washington, D.C.. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their Philadelphia to Washington, D.C. flight should consider departing on Wednesday mornings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Philadelphia to Washington, D.C. flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to Washington, D.C. trip

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Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with United Airlines and American Airlines from Philadelphia to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Philadelphia to Washington, D.C.?

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What are the cheapest airlines flying from Philadelphia to Washington, D.C. round-trip?

What are the most popular routes from Philadelphia to Washington, D.C.?

What are the most reliable airlines from Philadelphia to Washington, D.C.?

What are the cheapest flights from Philadelphia to Washington, D.C.?

Can I find deals for flights from Philadelphia to Washington, D.C. that include hotel bookings?

How can I find direct flights from Philadelphia to Washington, D.C.?

Can I find deals for business class flights from Philadelphia to Washington, D.C.?

What is the cheapest month to book a flight from Philadelphia to Washington, D.C.?

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

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Alternative routes for Philadelphia to Washington, D.C.

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Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

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Find flights from Philadelphia to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Philadelphia and Washington, D.C. flights

Browse other Philadelphia and Washington, D.C. flight options. Last updated on August 10, 2026.

Other flights from Philadelphia

Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on August 10, 2026.

Popular flight searches

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Philadelphia to Washington, D.C. flights

Consider these flights traveling from Philadelphia to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 10, 2026.

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Cheapest flights from Philadelphia to Washington, D.C.
Explore the most affordable flight options available from Philadelphia to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

Best flights from Philadelphia to Washington, D.C.
Discover carefully curated flight deals from Philadelphia to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.

Last-minute flights from Philadelphia to Washington, D.C.
Discover last-minute flight deals from Philadelphia to Washington, D.C.. Data last updated August 10, 2026 and is based on user searches.

One-way flights from Philadelphia to Washington, D.C.
Search for one-way flight options from Philadelphia to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.