Cheap Flights from Washington, D.C. DC to Philadelphia PA from $178

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Flight deals from Washington, D.C. to Philadelphia

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Philadelphia? Find the lowest prices on one-way and round-trip tickets right here.

Philadelphia.$178 per passenger.Departing Thu, Sep 4, returning Sat, Sep 6.Round-trip flight with American Airlines.Outbound direct flight with American Airlines departing from Washington Ronald Reagan on Thu, Sep 4, arriving in Philadelphia International.Inbound direct flight with American Airlines departing from Philadelphia International on Sat, Sep 6, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $178, select.

Philadelphia.$179 per passenger.Departing Thu, Aug 7, returning Mon, Aug 11.Round-trip flight with United.Outbound direct flight with United departing from Washington Dulles on Thu, Aug 7, arriving in Philadelphia International.Inbound direct flight with United departing from Philadelphia International on Mon, Aug 11, arriving in Washington Dulles.Price includes taxes and charges.From $179, select.

Philadelphia.$193 per passenger.Departing Tue, Jul 22, returning Tue, Jul 29.Round-trip flight with United.Outbound direct flight with United departing from Washington Dulles on Tue, Jul 22, arriving in Philadelphia International.Inbound direct flight with United departing from Philadelphia International on Tue, Jul 29, arriving in Washington Dulles.Price includes taxes and charges.From $193, select.

Philadelphia.$194 per passenger.Departing Fri, Aug 1, returning Thu, Sep 4.Round-trip flight with American Airlines.Outbound direct flight with American Airlines departing from Washington Ronald Reagan on Fri, Aug 1, arriving in Philadelphia International.Inbound direct flight with American Airlines departing from Philadelphia International on Thu, Sep 4, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $194, select.

Philadelphia.$194 per passenger.Departing Sat, Jul 26, returning Fri, Aug 1.Round-trip flight with United.Outbound direct flight with United departing from Washington Dulles on Sat, Jul 26, arriving in Philadelphia International.Inbound direct flight with United departing from Philadelphia International on Fri, Aug 1, arriving in Washington Dulles.Price includes taxes and charges.From $194, select.

Philadelphia.$236 per passenger.Departing Thu, Oct 9, returning Thu, Oct 16.Round-trip flight with United.Outbound direct flight with United departing from Washington Dulles on Thu, Oct 9, arriving in Philadelphia International.Inbound direct flight with United departing from Philadelphia International on Thu, Oct 16, arriving in Washington Dulles.Price includes taxes and charges.From $236, select.

Philadelphia.$239 per passenger.Departing Mon, Sep 15, returning Mon, Oct 6.Round-trip flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departing from Baltimore Washington International on Mon, Sep 15, arriving in Philadelphia International.Inbound indirect flight with Spirit Airlines, departing from Philadelphia International on Mon, Oct 6, arriving in Baltimore Washington International.Price includes taxes and charges.From $239, select.

Philadelphia.$264 per passenger.Departing Sun, Mar 29, returning Tue, Apr 7.Round-trip flight with United.Outbound direct flight with United departing from Washington Dulles on Sun, Mar 29, arriving in Philadelphia International.Inbound direct flight with United departing from Philadelphia International on Tue, Apr 7, arriving in Washington Dulles.Price includes taxes and charges.From $264, select.

Find the cheapest month to fly from Washington, D.C. to Philadelphia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington, D.C. to Philadelphia flights are currently cheapest in September.

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Direct flights from Washington, D.C. to Philadelphia

Alternative Washington, D.C. to Philadelphia routes

Looking for the cheapest, fastest or easiest route from Washington, D.C. to Philadelphia? You could fly into the following airports instead.

Washington, D.C. to Philadelphia: Flight information

The things to know before you go.

Cheapest flight found	$178
Cheapest month to fly	September
Average flight time	1 hr, 9 mins
Most popular airline	American Airlines
Average flights per week	139

Finding cheap flights from Washington, D.C. to Philadelphia: Frequently asked questions

How many airports are there in Philadelphia?

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.

How much are round-trip flights from Washington, D.C. to Philadelphia?

The best price we found for a round-trip flight from Washington, D.C. to Philadelphia is $178. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Washington, D.C. to Philadelphia?

1 hour and 9 minutes is the average flight time from Washington, D.C. to Philadelphia.

Which airlines fly direct from Washington, D.C. to Philadelphia?

American Airlines, United and Republic Airways fly direct from Washington, D.C. to Philadelphia.

How many flights are there a week from Washington, D.C. to Philadelphia?

There are 139 flights per week flying from Washington, D.C. to Philadelphia, as of July 2025.

When is the cheapest time to fly from Washington, D.C. to Philadelphia?

The cheapest month to fly from Washington, D.C. to Philadelphia is usually September.

What's the cheapest airport to fly to in Philadelphia?

If you're flying from Washington, D.C., the cheapest airport near Philadelphia is Philadelphia International – which is 11.2 km away from the center of Philadelphia. We've found flights to this airport from $178.

Which upcoming date is cheapest to fly from Washington, D.C. to Philadelphia on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington, D.C. to Philadelphia on Thursday, September 4, 2025.

Can I get a direct flight from Washington, D.C. to Philadelphia?

Yes – the average flight time is 1 hour and 9 minutes.

How can I get the best flight deal from Washington, D.C. to Philadelphia?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Philadelphia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Philadelphia?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Philadelphia is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Philadelphia?

In July, the average temperature is usually around 24°C. July is typically the warmest month in Philadelphia, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -5°C. The rainiest month is July.

Which is the cheapest airline to fly with from Washington, D.C. to Philadelphia?

The cheapest airline that flies to Philadelphia is American Airlines.

Traveling from Washington DC to Philadelphia: what you need to know

Your next exciting journey begins at one of Washington DC's main airports, Ronald Reagan National Airport (DCA) or Washington Dulles International Airport (IAD). Check out your options for booking a flight from Washington DC to Philadelphia departing from either of these bases.
When it comes to landing in Philadelphia, Philadelphia International Airport (PHL) is a major hub. Another is Trenton-Mercer Airport (TTN).
Book a direct Washington DC to Philadelphia flight and you'll be traveling for an average of 1 hour 10 minutes.
Washington DC and Philadelphia are both in the UTC-4 timezone. This means there's no time difference to consider.
The most popular route for flights from Washington DC to Philadelphia is from Ronald Reagan National Airport (DCA) to Philadelphia International Airport (PHL). You can choose from 25 services every week between these two airports. If you want to get going as soon as possible, the earliest flight from DCA to PHL is the 06:20 American Airlines option. If you prefer traveling later, the latest available service is at 23:00 with American Airlines.
To ensure you don't miss your Washington DC to Philadelphia flight, leave plenty of time for things like check-in and baggage drop. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.
If you're flying during a popular month like February, be at the airport even earlier. It's wise to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Expect lines to be longer during peak periods like Thanksgiving, Christmas and New Year.

How to find the cheapest flights from Washington DC to Philadelphia

Book two months before you want to travel. Pricing trends suggest that this is the ideal window for finding cheap Washington DC to Philadelphia flights.
The best month for landing cheap plane tickets from Washington DC to Philadelphia is May. Use the 'Whole month' tool to compare flight prices, then select the dates that offer the biggest savings.
There's no need to check back in every day to see if fares have dropped when you create a Price Alert. We'll tell you the moment there's a better deal on cheap flights from Washington DC to Philadelphia.
Save money on your Washington DC to Philadelphia flight with the help of our filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from Washington DC

Ronald Reagan National Airport (DCA)

Depart from Ronald Reagan National Airport (DCA) on a nonstop flight from Washington DC to Philadelphia. From DCA, you can fly directly into Philadelphia International Airport (PHL).
Secure your Washington DC to Philadelphia plane tickets with American Airlines. This airline is a popular choice for direct flights from DCA.
The journey from central Washington DC to DCA takes around 45 minutes by public transport. If you drive, ride-share or grab a cab, you'll cover the 6 kilometers in 15 minutes or so, depending on traffic.
Searching for a convenient hotel near Ronald Reagan National Airport? If you're catching an early flight from Washington DC to Philadelphia, these accommodation options will have you moments from check-in:
76.44% of flights leaving from Ronald Reagan National Airport touch down at their destination on time.
The address for DCA is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Consider booking your direct flight from Washington DC to Philadelphia departing Washington Dulles International Airport (IAD). Nonstop services from IAD will get you to Philadelphia International Airport (PHL).
You can book a direct Washington DC to Philadelphia plane ticket with United Airlines. This is one of the top carriers operating this route out of IAD.
Using public transport, you can travel from central Washington DC to IAD in around 1 hour 10 minutes. The terminal is roughly 40 kilometers away. Driving will take you about 50 minutes.
Want to treat yourself to an extra night away before boarding your flight from Washington DC to Philadelphia? Unwind in a hotel near Washington Dulles International Airport before your trip officially starts. Stay at one of these accommodation options:
When it comes to flight punctuality, Washington Dulles International Airport has an on-time arrival performance of 74.39%.
IAD is located at 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

BWI is around 40 kilometers from central Washington DC. The drive from the city center to the terminal takes about 50 minutes. If you're thinking about taking public transport, expect a journey time of around 1 hour 30 minutes.
Make taking an early Washington DC to Philadelphia flight the easiest part of your journey. Stay at one of these accommodation options close to Baltimore/Wash International Thurgood Marshall Airport and get to your departure gate with plenty of time to spare:
Airports have an on-time performance rating that tracks how often flights touch down within the expected time frame. At BWI, that rate is 77.13%.

Arriving in Philadelphia

Philadelphia International Airport (PHL)

Philadelphia International Airport (PHL) is approximately 11 kilometers from the center of Philadelphia. If you're catching a cab or a ride-share, the drive takes roughly 15 minutes.
If you're traveling on public transport, expect a journey time of about 45 minutes.
Consider booking a hotel near PHL if you're coming in on a late flight from Washington DC to Philadelphia. Settle into one of these accommodation options and avoid the hassle of a long transfer:
Travel at your own pace with a Philadelphia International Airport rental car. Pick up a set of wheels from Dollar, Thrifty or Budget and see more of Philadelphia and beyond.
To lock in the lowest price, reserve your ride from Philadelphia International Airport around three weeks ahead of your Washington DC to Philadelphia flight.
You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

Trenton-Mercer Airport (TTN) is roughly 48 kilometers from central Philadelphia. After your flight from Washington DC to Philadelphia, it'll take you approximately 40 minutes to get to the heart of the city in a cab or ride-share.
If you travel by public transport, you'll reach the center in 1 hour 45 minutes or so.
The fastest way to get to where you're going is with a Trenton-Mercer Airport rental car. Pick up your wheels from Budget, National or Enterprise and be on your way in a flash.
Avoid paying more than you need to. Booking your ride four weeks ahead of your arrival at TTN can help you lock in a better rate.
The address for Trenton-Mercer Airport is Scotch Road, Terminal Building.

Best time to go to Philadelphia

August is the busiest month for flights from Washington DC to Philadelphia. To avoid the crowds, go to Philadelphia in February.
Book a Washington DC to Philadelphia ticket departing in July if you want to experience the city during its warmest month. You can expect temperatures in Philadelphia to range from 18ºC (64ºF) to 32ºC (90ºF).
Search for cheap flights from Washington DC to Philadelphia in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 9ºC (48ºF) on average.

More about Philadelphia

After booking your flight from Washington DC to Philadelphia, find a hotel that offers the right mix of comfort and location. Make one of these options your base for exploring Philadelphia:
Liberty Bell and Independence Hall are just two of the top-rated attractions to put on your Philadelphia to-do list. Keep the sightseeing going at Philadelphia Museum of Art.

Explore more of United States

You've done Philadelphia, now it's time to discover other corners of United States. Travel around 129 kilometers north-east to New York to check off its top attractions. From Statue of Liberty to Central Park and Empire State Building, you'll have a packed itinerary ahead.
Boston is another well-known destination in United States and is around 434 kilometers north-east of Philadelphia. No trip is complete without seeing Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum.