WAS - PHL

$68 Find Cheap Flights from Washington, D.C. to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Philadelphia departing on 1/12. 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 Philadelphia

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

Cheapest round-trip
$131
Overall average: $437
Frontier
Wed 1/14Wed 1/21
IAD - PHL • 1 stop
Cheapest non-stop
$179
Typical prices: $179-$618
American Airlines
Fri 2/6Sat 2/7
DCA - PHL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
DCA's metro access offers quick downtown connections.
SEPTA trains offer a cost-effective ride from PHL.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $131 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAD-PHL
Cheapest • 8% average savings
DCA-PHL
Most popular
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Philadelphia 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 Washington, D.C. to Philadelphia

Wed, Jan 14 - Wed, Jan 21
Frontier Logo
6:00 am - 4:28 pm
IAD
-
PHL
10h 28m1 stop
Frontier Logo
5:07 pm - 10:42 am
PHL
-
IAD
17h 35m1 stop
$131Frontier
Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
6:00 am - 4:28 pm
IAD
-
PHL
10h 28m1 stop
Multiple Airlines Logo
6:00 am - 10:42 am
PHL
-
IAD
28h 42m2 stops
$147Multiple Airlines
Mon, Jan 26 - Fri, Jan 30
JetBlue Logo
7:00 am - 12:35 pm
DCA
-
PHL
5h 35m1 stop
JetBlue Logo
1:30 pm - 6:49 pm
PHL
-
DCA
5h 19m1 stop
$151JetBlue
Thu, Jan 29 - Sat, Jan 31
JetBlue Logo
7:00 am - 12:35 pm
DCA
-
PHL
5h 35m1 stop
JetBlue Logo
8:40 am - 2:29 pm
PHL
-
DCA
5h 49m1 stop
$159JetBlue
Fri, Feb 6 - Sat, Feb 7
American Airlines Logo
1:44 pm - 2:50 pm
DCA
-
PHL
1h 06mnonstop
American Airlines Logo
3:35 pm - 4:50 pm
PHL
-
DCA
1h 15mnonstop
$179American Airlines
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
8:20 am - 9:38 am
IAD
-
PHL
1h 18mnonstop
United Airlines Logo
10:30 am - 11:48 am
PHL
-
IAD
1h 18mnonstop
$179United Airlines
Sat, Jan 3 - Sat, Jan 10
American Airlines Logo
1:44 pm - 2:44 pm
DCA
-
PHL
1h 00mnonstop
American Airlines Logo
7:42 pm - 8:59 pm
PHL
-
DCA
1h 17mnonstop
$194American Airlines
Wed, Dec 31 - Sat, Jan 10
United Airlines Logo
12:55 pm - 2:07 pm
IAD
-
PHL
1h 12mnonstop
United Airlines Logo
7:45 pm - 9:03 pm
PHL
-
IAD
1h 18mnonstop
$194United Airlines
Fri, Feb 6 - Sat, Feb 7
Spirit Airlines Logo
11:30 am - 10:03 pm
BWI
-
PHL
10h 33m1 stop
Spirit Airlines Logo
8:20 am - 10:27 am
PHL
-
BWI
26h 07m2 stops
$203Spirit Airlines
Fri, Feb 6 - Sat, Feb 7
Spirit Airlines Logo
11:30 am - 11:50 pm
BWI
-
PHL
12h 20m2 stops
Spirit Airlines Logo
6:11 pm - 11:17 am
PHL
-
BWI
17h 06m2 stops
$297Spirit Airlines
Booking Insights

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

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

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

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

The cheapest return flight from Washington, D.C. to Philadelphia costs $203 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Philadelphia (PHL). Over the past month, this route was, on average, 8% cheaper than other Washington, D.C.-Philadelphia routes. The most popular route is between Washington, D.C. Reagan-National Airport (DCA) and Philadelphia (PHL).

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

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

Your flight ticket price will generally be cheaper if you fly to Philadelphia on a Friday and more expensive on a Saturday. On your return trip to Washington, D.C., you should consider flying back on a Wednesday, and avoid Mondays for better deals.

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

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $195 on average.

Expert advice

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

 
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.
Airlines
British Airways

BA offers 31-inch legroom in economy, ensuring comfort even on short flights.


BA economy includes a carry-on bag in the fare, avoiding surprise fees.

American Airlines

AA Basic Economy offers Group 9 boarding, no seat assignment until check-in.


Main Cabin Extra provides early boarding and complimentary drinks for a small fee.

Airports
DCA

DCA's metro access makes it easy to reach from downtown D.C. in under 30 minutes, perfect for quick departures.

IAD

Dulles offers AeroTrain and mobile lounges for quick terminal transfers, ideal for navigating efficiently before your flight.

PHL

SEPTA trains provide a cost-effective 30-minute ride from PHL to downtown Philadelphia, ideal for budget-conscious travelers.

Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines and PHL

Harriet Baskas

Harriet Baskas

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.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on DCA

Ramsey Qubein

Ramsey Qubein

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.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

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.

Read more

Good to know

Low seasonApril
Cheapest flight$68
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 41% lower on average.
Flight from Washington Dulles Airport to Philadelphia

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

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Philadelphia 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 Washington, D.C. to Philadelphia

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Philadelphia was $68 for a one-way ticket and $131 for a round-trip.

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

    A passport is not required to fly from Washington, D.C. to Philadelphia.

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

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl.) and only 1 airport in Philadelphia (Philadelphia). The cheapest flights are generally found on the Baltimore/Washington Airport to Philadelphia flight route.

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

    All the following airlines offer inflight Wi-Fi service on the Washington, D.C. to Philadelphia flight route: American Airlines, Alaska Airlines, Delta, JetBlue, SWISS, United Airlines, and Hawaiian Airlines.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Philadelphia are United Airlines and American Airlines. With an average price for the route of $239 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 $293 and an overall rating of 7.2.

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

    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 Washington, D.C. to Philadelphia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Washington, D.C. 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 Washington, D.C. to Philadelphia?

    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 Philadelphia with an airline and back to Washington, D.C. with another airline.

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

    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 Philadelphia from Washington, D.C. 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 Washington, D.C. to Philadelphia

  • Looking for a cheap flight? 25% of our users found flights on this route for $306 or less one-way and $263 or less round-trip.

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

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Philadelphia. 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 Washington, D.C. to Philadelphia? 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 9094 reviews
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
Airline reviews

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

4.0 OkayAnonymous, Dec 2025
IAD - GRU
Read more United Airlines reviews

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

the trip to madrid was uncomfortable with my legs touching the seat in front of me

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

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

Information on your arrival and departure airports

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

Transportation modeAverage priceAverage duration
Flights$1,3351h 00m
Trains$571h 56m