PHL - WAS

$84 Find Cheap Flights from Philadelphia to Washington, D.C. - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Washington, D.C. departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$171
Frontier
Tue 7/14Wed 7/15
PHL - BWI • 1 stop
Cheapest non-stop
$239
Typical prices: $269-$249
American Airlines
Thu 7/23Thu 7/30
PHL - DCA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American Basic Economy suits carry-on-only trips; Main Cabin Extra adds early boarding.
For Washington, DCA is the most convenient airport, just 4 miles from downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $171 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 1h 13m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Philadelphia to Washington, D.C. (PHL-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Washington, D.C.

Tue, Jul 14 - Wed, Jul 15
Frontier Logo
6:30 am - 3:34 pm
PHL
-
BWI
9h 04m
1 stop
Frontier Logo
6:35 am - 12:22 pm
BWI
-
PHL
5h 47m
1 stop
$171Frontier
Tue, Jul 21 - Wed, Jul 22
Frontier Logo
4:30 pm - 11:17 pm
PHL
-
BWI
6h 47m
1 stop
Frontier Logo
6:35 am - 10:28 pm
BWI
-
PHL
15h 53m
1 stop
$190Frontier
Tue, Jul 7 - Wed, Jul 15
Frontier Logo
4:30 pm - 7:26 am
PHL
-
BWI
14h 56m
1 stop
Frontier Logo
9:37 pm - 7:15 am
BWI
-
PHL
9h 38m
1 stop
$195Frontier
Wed, Sep 23 - Thu, Oct 15
Multiple Airlines Logo
9:14 am - 5:36 pm
PHL
-
IAD
8h 22m
1 stop
Multiple Airlines Logo
4:53 pm - 5:44 pm
IAD
-
PHL
24h 51m
1 stop
$208Multiple Airlines
Thu, Jul 9 - Thu, Jul 16
Multiple Airlines Logo
6:24 pm - 2:26 pm
PHL
-
IAD
20h 02m
1 stop
Multiple Airlines Logo
7:49 am - 10:28 pm
IAD
-
PHL
14h 39m
1 stop
$214Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
JetBlue Logo
8:35 am - 2:51 pm
PHL
-
DCA
6h 16m
1 stop
JetBlue Logo
3:10 pm - 11:53 pm
DCA
-
PHL
8h 43m
1 stop
$228JetBlue
Tue, Sep 1 - Sat, Sep 5
JetBlue Logo
8:28 am - 2:30 pm
PHL
-
DCA
6h 02m
1 stop
JetBlue Logo
2:15 pm - 8:00 pm
DCA
-
PHL
5h 45m
1 stop
$231JetBlue
Wed, Jul 15 - Wed, Jul 22
United Airlines Logo
10:39 am - 11:55 am
PHL
-
IAD
1h 16mnonstop
United Airlines Logo
8:35 am - 9:45 am
IAD
-
PHL
1h 10mnonstop
$239United Airlines
Thu, Jul 23 - Thu, Jul 30
American Airlines Logo
7:25 pm - 8:41 pm
PHL
-
DCA
1h 16mnonstop
American Airlines Logo
1:30 pm - 2:38 pm
DCA
-
PHL
1h 08mnonstop
$239American Airlines
Fri, Jul 3 - Mon, Jul 6
American Airlines Logo
7:25 pm - 8:41 pm
PHL
-
DCA
1h 16mnonstop
American Airlines Logo
1:30 pm - 2:38 pm
DCA
-
PHL
1h 08mnonstop
$240American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Washington, D.C. flights

Get data-powered insights and trends into flights from Philadelphia to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The absolute cheapest return flight from Philadelphia to Washington, D.C. costs $398 on the route between Philadelphia (PHL) and Washington, D.C. Dulles Intl Airport (IAD). The most popular route is between Philadelphia (PHL) and Washington, D.C. Dulles Intl Airport (IAD).

What’s the cheapest day of the week to fly from Philadelphia to Washington, D.C.?

The average price of all round-trip flights from Philadelphia to Washington, D.C. clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Washington, D.C. on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Philadelphia to Washington, D.C.. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Washington, D.C. is October, where tickets cost $144 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $309 and $239 respectively.

Can I save money by flying with a layover from Philadelphia to Washington, D.C.?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $399, prices are generally cheapest when you fly direct.

Expert advice

Expert advice for your flight from Philadelphia to Washington, D.C.

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, DCA and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines and PHL

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonNovember
Cheapest flight$84
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from Philadelphia to Baltimore

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

Are your dates flexible? Find out the best times to travel from Philadelphia to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Washington, D.C.

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

    In the last 5 days, the lowest price for a flight from Philadelphia to Washington, D.C. was $84 for a one-way ticket and $171 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Washington, D.C.?

    No, a passport isn't needed to fly from Philadelphia to Washington, D.C.. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to Washington, D.C.?

    Philadelphia is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave Philadelphia from Philadelphia and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to Washington, D.C.?

    All the following airlines offer inflight Wi-Fi service on the Philadelphia to Washington, D.C. flight route: American Airlines, Finnair, Aer Lingus, JetBlue, Iberia, SWISS, and British Airways.

  • Which aircraft models fly most regularly from Philadelphia to Washington, D.C.?

    The Airbus A321neo is the aircraft model that flies most regularly on the Philadelphia to Washington, D.C. flight route.

  • Which airline alliances offer flights from Philadelphia to Washington, D.C.?

    oneworld, and Star Alliance are the airline alliances operating flights between Philadelphia and Washington, D.C., with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Philadelphia to Washington, D.C.?

    There are nonstop flights from Philadelphia to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from Philadelphia to Washington, D.C., United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Washington, D.C. are United Airlines and American Airlines. With an average price for the route of $294 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $244 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Philadelphia to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $283 or less one-way and $529 or less round-trip.

Prefer to fly direct from Philadelphia to Washington, D.C.?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to Washington, D.C..
Find which airlines fly direct from Philadelphia Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

Philadelphia to Washington, D.C.

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more direct flights

Direct returns

Washington, D.C. to Philadelphia

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more direct flights

Reviews of the top airlines flying from Philadelphia to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9830 reviews
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
Airline reviews

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

2.0 MediocreLinda, Jun 2026
LIS - IAD
Read more United Airlines reviews

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

There were no facilities in the middle of the aircraft and premium economy was not allowed to use the business class facilities, and had to share the only two toilets at the back with economy. The upgrade to Premium was definitely not worth it

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

The economy seat was much less comfortable for an international flight in terms of recline and moving space when food tray is expanded. Per entertainment, it would be amazing if I could connect my Bluetooth headset or ear phones to the entertainment screen. Or provide in-flight wifi to connect directly from my own device.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

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

Information on your arrival and departure airports

Compare transportation modes for Philadelphia to Washington, D.C.

Transportation modeAverage priceAverage duration
Flights$1,2951h 09m
Trains$482h 06m
Buses$563h 19m