Cheap flights from Philadelphia (PHL) to Dulles Intl (IAD) from $121

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. 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.
PHL — IAD
Jun 23 — Jun 301

Cheap flight deals from Philadelphia to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 18, 2024.

Popular in

January

Cheapest in

December

Average price

$510

Round-trip from

$234
High demand for flights, 38% potential price rise
Best time to find cheap flights, 79% potential price drop
Average for round-trip flights in June 2024
From Philadelphia to Washington, D.C. Dulles Intl

What is the cheapest day to fly round-trip from Philadelphia to Washington, D.C. Dulles Intl Airport?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 61% on your flight compared to booking on days when demand is much higher.

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

Flights from Philadelphia to Washington, D.C. Dulles Intl Airport lean towards being more expensive in February. Prices are generally better when you fly from Philadelphia to Washington, D.C. Dulles Intl Airport in October, with the cheapest ticket starting at $105.

What is the cheapest time of day to fly from PHL to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Washington, D.C. Dulles Intl Airport as you normally would.

Cheap Philadelphia to Dulles Intl flights in June & July 2024

Find cheap flight options from Philadelphia to Dulles Intl specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,281,944 searches. Prices were last updated on June 18, 2024.
These are some of the best deals we've found on flights to Washington, D.C. in 2024 at this time. Check back regularly for other flight deals.
Thu 7/1810:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Wed 7/2410:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$159
Sat 7/136:00 amPHL - IAD
Nonstop1h 09mUnited Airlines
Tue 7/166:31 pmIAD - PHL
Nonstop1h 15mUnited Airlines
Deal found 6/16$219
Thu 7/1110:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Mon 7/1510:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$221
Wed 7/36:00 amPHL - IAD
Nonstop1h 09mUnited Airlines
Sat 7/612:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$229
Fri 6/2810:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Mon 7/110:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$234
Wed 6/263:59 pmPHL - IAD
1 stop6h 30mUnited Airlines
Wed 7/1012:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$239
Fri 7/266:36 pmPHL - IAD
1 stop15h 19mUnited Airlines
Sat 7/2712:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$267
Sat 7/1311:49 amPHL - IAD
1 stop5h 13mAmerican Airlines
Tue 7/165:00 amIAD - PHL
1 stop4h 27mAmerican Airlines
Deal found 6/16$288
Fri 6/2111:48 amPHL - IAD
1 stop5h 25mAmerican Airlines
Tue 6/259:28 amIAD - PHL
1 stop5h 21mAmerican Airlines
Deal found 6/18$293

Philadelphia to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Philadelphia and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,281,944 searches. Data last updated June 18, 2024.
These are some of the best deals we've found on flights to Washington, D.C. in 2024 at this time. Check back regularly for other flight deals.
Thu 7/1810:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Wed 7/2410:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$159
Sat 8/2410:40 amPHL - IAD
Nonstop1h 09mUnited Airlines
Sun 8/2512:40 pmIAD - PHL
Nonstop1h 05mUnited Airlines
Deal found 6/16$219
Thu 7/1110:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Mon 7/1510:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$221
Wed 7/36:00 amPHL - IAD
Nonstop1h 09mUnited Airlines
Sat 7/612:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$229
Fri 6/2810:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Mon 7/110:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$234
Wed 6/263:59 pmPHL - IAD
1 stop6h 30mUnited Airlines
Wed 7/1012:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$239
Sat 8/2410:40 amPHL - IAD
Nonstop1h 09mUnited Airlines
Thu 8/2912:40 pmIAD - PHL
Nonstop1h 05mUnited Airlines
Deal found 6/16$249
Fri 7/266:36 pmPHL - IAD
1 stop15h 19mUnited Airlines
Sat 7/2712:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$267
Sat 7/1311:49 amPHL - IAD
1 stop5h 13mAmerican Airlines
Tue 7/165:00 amIAD - PHL
1 stop4h 27mAmerican Airlines
Deal found 6/16$288

Philadelphia to Dulles Intl flights leaving soon

Find last-minute flight options from Philadelphia to Dulles Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,281,944 searches. Data last updated June 18, 2024.
Have a look at some of the flights available from Philadelphia to Washington, D.C. departing last-minute. Users should examine the flight details to ensure there are no surprises.
Fri 6/2810:15 amPHL - IAD
Nonstop1h 08mUnited Airlines
Mon 7/110:15 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$234
Wed 6/263:59 pmPHL - IAD
1 stop6h 30mUnited Airlines
Wed 7/1012:45 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$239
Thu 6/273:33 pmPHL - IAD
1 stop4h 12mAmerican Airlines
Sun 6/309:28 amIAD - PHL
1 stop4h 21mAmerican Airlines
Deal found 6/17$293
Fri 6/286:00 amPHL - IAD
Nonstop1h 09mUnited Airlines
Mon 7/16:30 amIAD - PHL
1 stop17h 59mUnited Airlines
Deal found 6/17$327
Thu 6/272:37 pmPHL - IAD
Nonstop1h 09mUnited Airlines
Sun 6/3010:05 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/17$334
Wed 6/263:33 pmPHL - IAD
1 stop4h 12mAmerican Airlines
Wed 7/109:24 amIAD - PHL
1 stop4h 08mAmerican Airlines
Deal found 6/18$338
Sun 6/233:59 pmPHL - IAD
1 stop6h 30mUnited Airlines
Sun 6/3010:05 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$374
Thu 6/272:37 pmPHL - IAD
Nonstop1h 09mUnited Airlines
Sun 6/3010:05 pmIAD - PHL
Nonstop1h 07mUnited Airlines
Deal found 6/18$399
Thu 6/271:23 pmPHL - IAD
3 stops21h 57mMultiple Airlines
Sun 6/3010:15 pmIAD - PHL
3 stops34h 45mMultiple Airlines
Deal found 6/17$426

One-way flights to Dulles Intl from Philadelphia

Search for one-way flight options from Philadelphia to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,281,944 searches. Data last updated June 18, 2024.
Users traveling one-way from Philadelphia to Washington, D.C. can select one of these great deals. For those needing a return trip from Philadelphia, there is a search form available above.
Wed 9/2511:05 amPHL - IAD
2 stops23h 04mMultiple Airlines
Deal found 6/18$121
Wed 7/176:18 pmPHL - IAD
2 stops22h 02mMultiple Airlines
Deal found 6/17$130
Wed 7/1712:00 pmPHL - IAD
3 stops28h 10mMultiple Airlines
Deal found 6/17$131
Wed 9/258:23 pmPHL - IAD
3 stops34h 57mMultiple Airlines
Deal found 6/18$150
Wed 9/257:40 pmPHL - IAD
1 stop13h 03mAmerican Airlines
Deal found 6/18$154
Tue 7/22:04 pmPHL - IAD
3 stops21h 16mMultiple Airlines
Deal found 6/18$190
Wed 7/176:00 amPHL - IAD
Nonstop1h 09mUnited Airlines
Deal found 6/17$195
Mon 9/166:37 amPHL - IAD
1 stop6h 51mAmerican Airlines
Deal found 6/18$204
Sat 8/32:37 pmPHL - IAD
Nonstop1h 09mUnited Airlines
Deal found 6/18$219

Find flights from Philadelphia to Dulles Intl within your budget

Customize your flight search to find flights from Philadelphia to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,281,944 searches. Data last updated June 18, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$219 - $340

Route

Depart

Return

Price

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Thu 7/18

Nonstop1h 09m

Washington, D.C. Dulles Intl

Thu 7/25

Nonstop1h 07m

$219

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Thu 7/11

Nonstop1h 08m

Washington, D.C. Dulles Intl

Mon 7/15

Nonstop1h 07m

$221

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Wed 7/3

Nonstop1h 09m

Washington, D.C. Dulles Intl

Sat 7/6

Nonstop1h 07m

$229

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Sat 7/20

1 stop5h 13m

Washington, D.C. Dulles Intl

Tue 7/23

1 stop4h 08m

$288

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Fri 11/1

Nonstop1h 08m

Washington, D.C. Dulles Intl

Sun 11/17

Nonstop1h 06m

$299

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Thu 7/18

3 stops23h 20m

Washington, D.C. Dulles Intl

Thu 7/25

3 stops20h 05m

$310

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Thu 7/11

1 stop5h 53m

Washington, D.C. Dulles Intl

Mon 7/15

1 stop7h 12m

$319

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Sat 7/20

1 stop5h 13m

Washington, D.C. Dulles Intl

Sun 7/21

1 stop4h 27m

$338

PhiladelphiaWashington, D.C. Dulles Intl

PHL - IAD

PHLIAD

Philadelphia

Thu 7/18

2 stops22h 23m

Washington, D.C. Dulles Intl

Thu 7/25

3 stops20h 05m

$340

Flights are sorted by cheapest first

Deals found on 6/18

What is the cheapest day to fly from Philadelphia to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Dulles Intl. Price data was last updated on June 16, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Philadelphia to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Philadelphia to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated June 18, 2024.
Read reviews from past customers who have flown United Airlines and American Airlines from Philadelphia to Washington, D.C.. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
7.4
Good
10,000 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.2

Reviews

1 / 10

More comfort and free, fast Wi-Fi would always be appreciated.

7.4
Good
10,000 reviews
7.4
Good
10,000 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.2

Reviews

1 / 10

More comfort and free, fast Wi-Fi would always be appreciated.

7.3
Good
10,000 reviews
7.4
Good
10,000 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.2

Reviews

1 / 10

More comfort and free, fast Wi-Fi would always be appreciated.

7.2
Good
568 reviews
7.4
Good
10,000 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.2

Reviews

1 / 10

More comfort and free, fast Wi-Fi would always be appreciated.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Philadelphia to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 0 flights from Philadelphia to Washington, D.C. Dulles Intl per day from 0 different airlines.

  • Can I find flights from Philadelphia to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

    Yes, there are multiple flights from Philadelphia to Washington, D.C. Dulles Intl Airport for under $300. The cheapest flight booked recently is on United Airlines for just $219, but on average you can expect to pay $332.

  • Are there nonstop flights from Philadelphia to Washington, D.C. Dulles Intl Airport for under $200 on Cheapflights?

    Cheapflights has at least 7 direct flights from Philadelphia to Washington, D.C. Dulles Intl Airport under $200. A good price for a nonstop flight from Philadelphia to Washington, D.C. Dulles Intl Airport is less than $267.

  • Are there last-minute flights available from Philadelphia to Washington, D.C. Dulles Intl Airport for under $300?

    There are currently 20+ open flights from Philadelphia to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $300.

  • What are the cheapest airlines flying from Philadelphia to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $219. Another option worth looking into is American Airlines, starting at $288 round trip. United Airlines is currently priced 52% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Philadelphia to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $154. However, be on the lookout for offers from United Airlines and Sun Country Air, as they are both options that can get you from Philadelphia to Washington, D.C. Dulles Intl Airport for a low price.

  • What are the cheapest flights from Philadelphia to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from Philadelphia to Washington, D.C. Dulles Intl Airport is $120. On average you can expect to pay $865. The most popular route, (Philadelphia - Washington, D.C. Dulles Intl), can usually be booked for $159.

  • What does PHL to IAD mean?

    Great question - PHL to IAD just means Philadelphia Airport to Washington, D.C. Dulles Intl Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Philadelphia to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Philadelphia to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Philadelphia to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Philadelphia to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Philadelphia to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Dulles Intl.

  • Can I find deals for business class flights from Philadelphia to Dulles Intl?

    Yes. Cheapflights offers flight deals from Philadelphia to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Philadelphia to Dulles Intl that allow pets onboard?

    Many airlines flying from Philadelphia to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Philadelphia to Dulles Intl?

    Yes, you can often find last-minute deals on Philadelphia to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Philadelphia to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Philadelphia to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 6/18.

  • What is the cheapest month to book a flight from Philadelphia to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Philadelphia to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $378). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights from Philadelphia to Dulles Intl by cabin class

Find flights from Philadelphia to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Philadelphia to Dulles Intl

Find hourly flight availability from Philadelphia to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2024.
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.