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Cheap Flights from Washington (IAD) to Philadelphia (PHL)

View AU$229 flight on Thu, 22 Oct 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Philadelphia International Airport (PHL)

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Cheap Flights from Washington (IAD) to Philadelphia (PHL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$382 Return, found 5 days ago
AU$382
Return
found 5 days ago
Select American Airlines flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$382 found 5 days ago
United
Mon, 28 Dec - Tue, 12 Jan
IAD
Washington
PHL
Philadelphia
AU$449 Return, found 2 days ago
AU$449
Return
found 2 days ago
Select United flight, departing Mon, 28 Dec from Washington to Philadelphia, returning Tue, 12 Jan, priced at AU$449 found 2 days ago
United
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$453 Return, found 5 days ago
AU$453
Return
found 5 days ago
Select United flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$453 found 5 days ago
American Airlines
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$453 Return, found 5 days ago
AU$453
Return
found 5 days ago
Select American Airlines flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$453 found 5 days ago
United
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$474 Return, found 5 days ago
AU$474
Return
found 5 days ago
Select United flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$474 found 5 days ago
American Airlines
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$481 Return, found 5 days ago
AU$481
Return
found 5 days ago
Select American Airlines flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$481 found 5 days ago
American Airlines
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$518 Return, found 5 days ago
AU$518
Return
found 5 days ago
Select American Airlines flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$518 found 5 days ago
United
Mon, 28 Dec - Tue, 12 Jan
IAD
Washington
PHL
Philadelphia
AU$520 Return, found 2 days ago
AU$520
Return
found 2 days ago
Select United flight, departing Mon, 28 Dec from Washington to Philadelphia, returning Tue, 12 Jan, priced at AU$520 found 2 days ago
United
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$535 Return, found 5 days ago
AU$535
Return
found 5 days ago
Select United flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$535 found 5 days ago
Delta
Mon, 28 Sept - Mon, 5 Oct
IAD
Washington
PHL
Philadelphia
AU$875 Return, found 5 days ago
AU$875
Return
found 5 days ago
Select Delta flight, departing Mon, 28 Sept from Washington to Philadelphia, returning Mon, 5 Oct, priced at AU$875 found 5 days ago

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) cost?
You can find one-way and return flights from IAD to PHL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to PHL ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD) to Philadelphia, PA (PHL)?
The cheapest months to fly from Washington, DC (IAD) to Philadelphia, PA (PHL) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Only one airline offers direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.). United operates 35 direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) every week.
How do I find cheap flights from Washington, DC (IAD) to Philadelphia, PA (PHL)?
To find a cheap flight from Washington, DC (IAD) to Philadelphia, PA (PHL), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Delta offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The cheapest months to fly from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) are typically February and December, with average return flights costing around AU$439. These months can be a great option if you're looking for more affordable fares, as they often fall outside peak travel seasons.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You'll find around 5 nonstop flights per day from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL). For even more choices, look at flights that include layovers, as there are approximately 18 connecting flights per day. Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Charlotte-Douglas Intl. (CLT), and Detroit Metropolitan Wayne County (DTW).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) typically departs around 5:00 AM. This flight is operated by American Airlines. This is a seasonal service, active only in February. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You'll generally find the most flights from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL) on a Tuesday, with around 24 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Delta, United, and American Airlines. Flight schedules are fairly consistent throughout the week, so you'll have several flight options no matter which day you choose to fly.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL) are in the afternoon, from 12pm to 3pm. Many major carriers, including Delta, United and American Airlines, offer flights during this window. Many travelers prefer this time as it allows for a productive morning before heading to the airport, and you'll arrive in Philadelphia with plenty of time for afternoon activities or meetings.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
A nonstop flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) typically takes around 1 hour 18 minutes. This route covers a distance of approximately 216 kilometers. If you opt for a flight with one stop, your travel time will be significantly longer, usually around 5 hours 48 minutes. Flights with two or more stops can take even longer, averaging about 12 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You can fly business class or first class between IAD and PHL. First class cabins are available on Delta, United, and American Airlines.
How do I earn miles on a Washington, DC (IAD) to Philadelphia, PA (PHL) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD) to Philadelphia, PA (PHL) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Philadelphia, PA (PHL) from Washington, DC (IAD)?
If you're planning to travel to Philadelphia from Washington Dulles Intl. (IAD), you can fly directly into Philadelphia Intl. (PHL). Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), DuBois Regional (DUJ), or Bradford Regional (BFD) before reaching Philadelphia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD) to Philadelphia, PA (PHL) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD) to Philadelphia, PA (PHL) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD) to Philadelphia, PA (PHL) flight and hotel package?
Securing a Washington, DC (IAD) to Philadelphia, PA (PHL) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD) to Philadelphia, PA (PHL)?
If you booked your Washington, DC (IAD) to Philadelphia, PA (PHL) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Philadelphia Intl.
Airlines serving
American Airlines, United
Roundtrip price
AU$382
Distance
214 km
Average flight time
1 hour 16 mins

Book with confidence

Your quick guide to flights from Washington to Philadelphia

Pick up great flights from Washington to Philadelphia

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Washington to Philadelphia. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Washington to Philadelphia that take around hours.

Find cheap flights from Washington to Philadelphia

From the great flight deals with prices currently ranging from AU$382 to AU$875, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to Philadelphia around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Philadelphia is normally in September.

Reasons to book your flight from Washington to Philadelphia with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Washington to Philadelphia across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Philadelphia right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Washington to Philadelphia

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