WAS - PHL

$70 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 5/27. 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
$141
Typical prices: $387-$218
Multiple Airlines
Wed 5/27Wed 6/3
IAD - PHL • 1 stop
Cheapest non-stop
$239
Typical prices: $289-$239
United Airlines
Wed 5/20Wed 5/27
IAD - PHL • Non-stop
Advice from real travelers
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
Cheapest • from $148 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 1h 14m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Top routes
Cheapest • 3% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $184 (round-trip)
Shortest trip • 4h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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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 Philadelphia!
Flight Deals
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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, May 27 - Wed, Jun 3
Multiple Airlines Logo
6:22 pm - 9:25 am
IAD
-
PHL
15h 03m
1 stop
Multiple Airlines Logo
8:10 am - 6:42 pm
PHL
-
IAD
10h 32m
1 stop
$141Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
7:27 pm - 11:45 pm
BWI
-
PHL
28h 18m
1 stop
Multiple Airlines Logo
8:10 am - 11:29 pm
PHL
-
BWI
15h 19m
1 stop
$144Multiple Airlines
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
1:10 pm - 12:44 am
BWI
-
PHL
11h 34m
1 stop
Multiple Airlines Logo
8:44 pm - 3:28 pm
PHL
-
BWI
18h 44m
1 stop
$145Multiple Airlines
Tue, May 26 - Tue, Jun 2
Frontier Logo
5:30 pm - 3:02 pm
IAD
-
PHL
21h 32m
1 stop
Frontier Logo
8:10 am - 6:42 pm
PHL
-
IAD
10h 32m
1 stop
$148Frontier
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
7:27 pm - 11:45 pm
BWI
-
PHL
28h 18m
1 stop
Multiple Airlines Logo
6:00 am - 3:28 pm
PHL
-
BWI
9h 28m
1 stop
$150Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Frontier Logo
6:26 pm - 12:44 am
IAD
-
PHL
30h 18m
1 stop
Frontier Logo
6:00 am - 8:02 pm
PHL
-
IAD
14h 02m
1 stop
$156Frontier
Tue, Sep 29 - Thu, Oct 1
JetBlue Logo
12:10 pm - 6:04 pm
DCA
-
PHL
5h 54m
1 stop
JetBlue Logo
6:00 am - 11:20 am
PHL
-
DCA
5h 20m
1 stop
$212JetBlue
Tue, Jun 9 - Tue, Jun 16
JetBlue Logo
1:10 pm - 6:50 pm
DCA
-
PHL
5h 40m
1 stop
JetBlue Logo
8:28 am - 2:45 pm
PHL
-
DCA
6h 17m
1 stop
$220JetBlue
Wed, May 20 - Wed, May 27
American Airlines Logo
1:45 pm - 3:00 pm
DCA
-
PHL
1h 15mnonstop
American Airlines Logo
3:47 pm - 5:00 pm
PHL
-
DCA
1h 13mnonstop
$239American Airlines
Sat, May 16 - Mon, May 18
American Airlines Logo
1:44 pm - 2:59 pm
DCA
-
PHL
1h 15mnonstop
American Airlines Logo
6:53 pm - 8:19 pm
PHL
-
DCA
1h 26mnonstop
$240American 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.

How much is a round-trip flight from Washington, D.C. to Philadelphia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Philadelphia departing in May.

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 $239 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Philadelphia (PHL). Over the past month, this route was, on average, 3% 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 Tuesday. On your return trip to Washington, D.C., you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Philadelphia, 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 Washington, D.C. to Philadelphia is June, where tickets cost $179 (return) on average. On the other hand, the most expensive months are March and July, where the average cost of round-trip tickets is $458 and $378 respectively.

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 $311 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.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

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.

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.

Ramsey Qubein

Ramsey Qubein

Expert on DCA

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.

Stefanie Waldek

Stefanie Waldek

Expert on 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.

Good to know

Low seasonDecember
Cheapest flight$70
Best time to beat the crowds with an average 51% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Baltimore 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 $70 for a one-way ticket and $141 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?

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

  • 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 $467 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 $359 and an overall rating of 7.1.

  • 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 $296 or less one-way and $461 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 9680 reviews
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Vegetarian selection could be better. Bread was too hard to chew.

8.0 ExcellentAnonymous, Apr 2026
IAD - FRA
Read more United Airlines reviews

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer service.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

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$1,0731h 15m
Trains$591h 59m
Buses$463h 20m