Title: £429 Cheap Flights from Washington to Philadelphia (IAD to PHL) - Expedia.co.uk ![Street view of downtown Philadelphia in PA, USA](https://images.trvl-media.com/place/178297/8334056d-4758-4753-ae85-5adcad811308.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178297/8334056d-4758-4753-ae85-5adcad811308.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £429 Cheap Flights from Washington (IAD) to Philadelphia (PHL) [View £429 flight on Tue, 30 Sept 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:IAD,to:PHL,departure:30/09/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:429.00&airProductToken=AQpeCi0IwaYBEgM0MTYYiBggkgEo8ZD5AjDMk_kCOFhAAFgBagJTVnIIU0g0T0FWQk4KLQjBpgESAzQ0NBiSASDvWSj9k_kCMLqW-QI4WEABWAFqAlNWcghTSDRPQVZCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Washington Dulles International Airport (IAD) to Philadelphia International Airport (PHL) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:iad,to:phl,departure:30/09/2025TANYT&leg2=from:phl,to:iad,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:iad,to:phl,departure:30/09/2025TANYT&leg2=from:phl,to:iad,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:iad,to:phl,departure:30/09/2025TANYT&leg2=from:phl,to:iad,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ## Plan, book, fly with confidence - ### Be in the know Get alerts if flight prices drop or rise\* - ### Book smarter Save up to 25% on select hotels after you book a flight\* - ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from Washington (IAD) to Philadelphia (PHL) Prices were available within the past 7 days and start at £429 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ## Find the cheapest month to fly from Washington (IAD) to Philadelphia (PHL) ### June is typically the cheapest month to fly From £118 - £354 per traveller. ## Frequently asked questions ### How much is a flight from Washington Dulles Intl. Airport (IAD) to PHL? > Round-trip tickets from Dulles Intl. Airport to Philadelphia Intl. Airport (PHL) start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from IAD to PHL? > The majority of flights can be conveniently cancelled online, but whether or not you incur a fee all comes down to your airline. If you do need to cancel your getaway, follow the easy instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from IAD to Philadelphia Intl. Airport (PHL) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAD to Philadelphia Intl. Airport (PHL) flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from IAD to Philadelphia Airport? > You won't need a lengthy novel for this flight — it's only 220 kilometres from Chantilly to Philadelphia. Sit down, order some snacks and you'll be in Philadelphia before long. ### Which airlines fly direct from IAD to PHL? > At present, no airlines offer direct flights from IAD to PHL. You'll have to book a flight with at least one stop. To score the best connections and price, lock in your airfare well ahead of time. ### Are Washington Dulles Intl. Airport (IAD) to Philadelphia Intl. Airport (PHL) flight tickets cheaper when they're purchased at the last minute? > Last-minute planners can occasionally pick up a bargain, with some super cheap airfares from IAD to PHL surfacing a few weeks prior to the departure date. If you'd rather book ahead of time, Expedia compares and updates the best flight deals regularly — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines quote prices that far in advance. ## Travel information | Origin airport | Washington Dulles Intl. | | --- | --- | | Destination airport | Philadelphia Intl. | | Distance | 214 km | | Average flight time | 1 hour 12 mins | ## Book with confidence ### Compare flights from Washington to Philadelphia easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Philadelphia. Operating between them flights per day, 9 airlines cover the route. And fly direct, getting you to Philadelphia Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Philadelphia Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL) The easiest way to view the best deals on flights from Washington to Philadelphia today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Philadelphia Intl. start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Washington and Philadelphia - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Washington to Philadelphia flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Philadelphia Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Explore a world of travel with Expedia - Trending Routes - Trending Flights - Top Flights Destinations - Related Airlines - Nearby Airports - Cheap Flights from Other Airports - Expedia's Latest Trends ### Top Routes from Washington - [Washington to London (IAD - LCY)](https://expedia.co.uk/lp/flights/iad/lcy/washington-to-london) - [Washington to Bologna (IAD - BLQ)](https://expedia.co.uk/lp/flights/iad/blq/washington-to-bologna) - [Washington to Barcelona (IAD - BCN)](https://expedia.co.uk/lp/flights/iad/bcn/washington-to-barcelona) - [Washington to Florence (IAD - FLR)](https://expedia.co.uk/lp/flights/iad/flr/washington-to-florence) - [Washington to Reykjavik (IAD - KEF)](https://expedia.co.uk/lp/flights/iad/kef/washington-to-reykjavik) - [Washington to Athens (IAD - ATH)](https://expedia.co.uk/lp/flights/iad/ath/washington-to-athens) - [Washington to London (IAD - LHR)](https://expedia.co.uk/lp/flights/iad/lhr/washington-to-london) - [Washington to Lisbon (IAD - LIS)](https://expedia.co.uk/lp/flights/iad/lis/washington-to-lisbon) - [Washington to Munich (IAD - MUC)](https://expedia.co.uk/lp/flights/iad/muc/washington-to-munich) ### Top Routes to Philadelphia - [Exeter to Philadelphia (EXT - PHL)](https://expedia.co.uk/lp/flights/ext/phl/exeter-to-philadelphia) - [Los Angeles to Philadelphia (LAX - PHL)](https://expedia.co.uk/lp/flights/lax/phl/los-angeles-to-philadelphia) - [Bristol to Philadelphia (BRS - PHL)](https://expedia.co.uk/lp/flights/brs/phl/bristol-to-philadelphia) - [London to Philadelphia (LCY - PHL)](https://expedia.co.uk/lp/flights/lcy/phl/london-to-philadelphia) - [Boston to Philadelphia (BOS - PHL)](https://expedia.co.uk/lp/flights/bos/phl/boston-to-philadelphia) - [Liverpool to Philadelphia (LPL - PHL)](https://expedia.co.uk/lp/flights/lpl/phl/liverpool-to-philadelphia) - [Leeds to Philadelphia (LBA - PHL)](https://expedia.co.uk/lp/flights/lba/phl/leeds-to-philadelphia) - [Edinburgh to Philadelphia (EDI - PHL)](https://expedia.co.uk/lp/flights/edi/phl/edinburgh-to-philadelphia) - [Dublin to Philadelphia (DUB - PHL)](https://expedia.co.uk/lp/flights/dub/phl/dublin-to-philadelphia) - [Lagos to Philadelphia (LOS - PHL)](https://expedia.co.uk/lp/flights/los/phl/lagos-to-philadelphia) - [Birmingham to Philadelphia (BHX - PHL)](https://expedia.co.uk/lp/flights/bhx/phl/birmingham-to-philadelphia) - [Newcastle to Philadelphia (NCL - PHL)](https://expedia.co.uk/lp/flights/ncl/phl/newcastle-to-philadelphia) ### Top Routes from Washington - [British Airways Washington to London](https://expedia.co.uk/lp/flight-routes/british-airways-from-washington-dulles-intl-to-heathrow/ba/iad/lhr) ### Top Routes to Philadelphia - [British Airways Dublin to Philadelphia](https://expedia.co.uk/lp/flight-routes/british-airways-from-dublin-to-philadelphia-intl/ba/dub/phl) - [Aer Lingus London to Philadelphia](https://expedia.co.uk/lp/flight-routes/aer-lingus-from-heathrow-to-philadelphia-intl/ei/lhr/phl) - [British Airways Aberdeen to Philadelphia](https://expedia.co.uk/lp/flight-routes/british-airways-from-aberdeen-to-philadelphia-intl/ba/abz/phl) ### Top Flight Destinations - [Flights to Las Vegas](https://expedia.co.uk/Cheap-Flights-To-Las-Vegas.d178276.Travel-Guide-Flights) - [Flights to New York](https://expedia.co.uk/Cheap-Flights-To-New-York.d178293.Travel-Guide-Flights) - [Flights to Orlando](https://expedia.co.uk/Cheap-Flights-To-Orlando.d178294.Travel-Guide-Flights) - [Flights to Chicago](https://expedia.co.uk/Cheap-Flights-To-Chicago.d178248.Travel-Guide-Flights) - [Flights to San Diego](https://expedia.co.uk/Cheap-Flights-To-San-Diego.d3073.Travel-Guide-Flights) - [Flights to San Francisco](https://expedia.co.uk/Cheap-Flights-To-San-Francisco.d178305.Travel-Guide-Flights) - [Flights to Los Angeles](https://expedia.co.uk/Cheap-Flights-To-Los-Angeles.d178280.Travel-Guide-Flights) - [Flights to Boston](https://expedia.co.uk/Cheap-Flights-To-Boston.d178239.Travel-Guide-Flights) - [Flights to Miami](https://expedia.co.uk/Cheap-Flights-To-Miami.d178286.Travel-Guide-Flights) - [Flights to Houston](https://expedia.co.uk/Cheap-Flights-To-Houston.d178265.Travel-Guide-Flights) - [Flights to Pigeon Forge](https://expedia.co.uk/Cheap-Flights-To-Pigeon-Forge.d8264.Travel-Guide-Flights) - [Flights to Nashville](https://expedia.co.uk/Cheap-Flights-To-Nashville.d178291.Travel-Guide-Flights) - [Flights to Myrtle Beach](https://expedia.co.uk/Cheap-Flights-To-Myrtle-Beach.d601685.Travel-Guide-Flights) - [Flights to Atlanta](https://expedia.co.uk/Cheap-Flights-To-Atlanta.d178232.Travel-Guide-Flights) - [Flights to San Antonio](https://expedia.co.uk/Cheap-Flights-To-San-Antonio.d178303.Travel-Guide-Flights) - [Flights to Denver](https://expedia.co.uk/Cheap-Flights-To-Denver.d178254.Travel-Guide-Flights) - [Flights to Honolulu](https://expedia.co.uk/Cheap-Flights-To-Honolulu.d1488.Travel-Guide-Flights) - [Flights to Gatlinburg](https://expedia.co.uk/Cheap-Flights-To-Gatlinburg.d7474.Travel-Guide-Flights) - [Flights to Panama City Beach](https://expedia.co.uk/Cheap-Flights-To-Panama-City-Beach.d8021.Travel-Guide-Flights) - [Flights to Atlantic City](https://expedia.co.uk/Cheap-Flights-To-Atlantic-City.d602179.Travel-Guide-Flights) ### Related Airlines - [British Airways](https://expedia.co.uk/British-Airways-Flights.cBA.Travel-Guide-Airlines) - [TAP Portugal](https://expedia.co.uk/TAP-Portugal-Flights.cTP.Travel-Guide-Airlines) - [KLM](https://expedia.co.uk/KLM-Flights.cKL.Travel-Guide-Airlines) - [Air France](https://expedia.co.uk/Air-France-Flights.cAF.Travel-Guide-Airlines) - [Aer Lingus](https://expedia.co.uk/Aer-Lingus-Flights.cEI.Travel-Guide-Airlines) - [Lufthansa](https://expedia.co.uk/Lufthansa-Flights.cLH.Travel-Guide-Airlines) - [Turkish Airlines](https://expedia.co.uk/Turkish-Airlines-Flights.cTK.Travel-Guide-Airlines) - [Swiss International Air Lines](https://expedia.co.uk/Swiss-International-Air-Lines-Flights.cLX.Travel-Guide-Airlines) - [Iberia](https://expedia.co.uk/Iberia-Flights.cIB.Travel-Guide-Airlines) - [SAS](https://expedia.co.uk/Scandinavian-Airlines-Flights.cSK.Travel-Guide-Airlines) - [Austrian Airlines](https://expedia.co.uk/Austrian-Airlines-Flights.cOS.Travel-Guide-Airlines) - [Air Canada](https://expedia.co.uk/Air-Canada-Flights.cAC.Travel-Guide-Airlines) - [Icelandair](https://expedia.co.uk/Icelandair-Flights.cFI.Travel-Guide-Airlines) - [Virgin Atlantic](https://expedia.co.uk/Virgin-Atlantic-Flights.cVS.Travel-Guide-Airlines) - [Finnair](https://expedia.co.uk/Finnair-Flights.cAY.Travel-Guide-Airlines) - [Brussels Airlines](https://expedia.co.uk/Brussels-Airlines-Flights.cSN.Travel-Guide-Airlines) Washington Airports #### Washington [Ronald Reagan Washington National to Philadelphia](https://expedia.co.uk/lp/flights/dca/phl/washington-to-philadelphia) £169.90 ### Nearby Airports - [Manassas Regional Airport (MNZ)](https://expedia.co.uk/lp/airports/mnz/flights-from-manassas-regional-airport) - [Montgomery County Airpark Airport (GAI)](https://expedia.co.uk/lp/airports/gai/flights-from-montgomery-county-airpark-airport) - [Ronald Reagan Washington National Airport (DCA)](https://expedia.co.uk/lp/airports/dca/flights-from-ronald-reagan-washington-national-airport) - [College Park Airport (CGS)](https://expedia.co.uk/lp/airports/cgs/flights-from-college-park-airport) - [Tipton Airport (FME)](https://expedia.co.uk/lp/airports/fme/flights-from-tipton-airport) - [Eastern West Virginia Regional Airport (MRB)](https://expedia.co.uk/lp/airports/mrb/flights-from-eastern-west-virginia-regional-airport) - [Baltimore Washington Intl. Thurgood Marshall Airport (BWI)](https://expedia.co.uk/lp/airports/bwi/flights-from-baltimore-washington-intl-thurgood-marshall-airport) - [Hagerstown Regional Airport (HGR)](https://expedia.co.uk/lp/airports/hgr/flights-from-hagerstown-regional-airport) - [Martin State Airport (MTN)](https://expedia.co.uk/lp/airports/mtn/flights-from-martin-state-airport) - [Charlottesville-Albemarle Airport (CHO)](https://expedia.co.uk/lp/airports/cho/flights-from-charlottesville-albemarle-airport) ### Expedia's Latest Trends Flights - [Cheap Flights from London (LHR) to Boston (BOS)](https://expedia.co.uk/lp/flights/lhr/bos/london-to-boston) - [Cheap Flights from London (LHR) to Cincinnati (CVG)](https://expedia.co.uk/lp/flights/lhr/cvg/london-to-cincinnati) - [Cheap Flights from London (LHR) to Seattle (SEA)](https://expedia.co.uk/lp/flights/lhr/sea/london-to-seattle) - [Cheap Flights from Boston (BOS) to London (LHR)](https://expedia.co.uk/lp/flights/bos/lhr/boston-to-london) - [Cheap Flights from Las Vegas (LAS) to London (LHR)](https://expedia.co.uk/lp/flights/las/lhr/las-vegas-to-london) - [Cheap Flights from London (LHR) to Anchorage (ANC)](https://expedia.co.uk/lp/flights/lhr/anc/london-to-anchorage) - [Cheap Flights from London (LHR) to Columbus (CMH)](https://expedia.co.uk/lp/flights/lhr/cmh/london-to-columbus) - [Cheap Flights from Las Vegas (LAS) to New York (JFK)](https://expedia.co.uk/lp/flights/las/jfk/las-vegas-to-new-york) - [Cheap Flights from Manchester (MAN) to Boston (BOS)](https://expedia.co.uk/lp/flights/man/bos/manchester-to-boston) - [Cheap Flights from Las Vegas (LAS) to Los Angeles (LAX)](https://expedia.co.uk/lp/flights/las/lax/las-vegas-to-los-angeles) - [Cheap Flights from London (LHR) to Fort Lauderdale (FLL)](https://expedia.co.uk/lp/flights/lhr/fll/london-to-fort-lauderdale) - [Cheap Flights from London (LON) to New York (NYC)](https://expedia.co.uk/lp/flights/lon/nyc/london-to-new-york) - [Cheap Flights from Las Vegas (LAS) to San Francisco (SFO)](https://expedia.co.uk/lp/flights/las/sfo/las-vegas-to-san-francisco) - [Cheap Flights from London (LHR) to Cleveland (CLE)](https://expedia.co.uk/lp/flights/lhr/cle/london-to-cleveland) - [Cheap Flights from London (LHR) to Pittsburgh (PIT)](https://expedia.co.uk/lp/flights/lhr/pit/london-to-pittsburgh) - [Cheap Flights from Toronto (YYZ) to New York (NYC)](https://expedia.co.uk/lp/flights/yyz/nyc/toronto-to-new-york) - [Cheap Flights from Edinburgh (EDI) to Boston (BOS)](https://expedia.co.uk/lp/flights/edi/bos/edinburgh-to-boston) - [Cheap Flights from Manchester (MAN) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/man/las/manchester-to-las-vegas) - [Cheap Flights from Los Angeles (LAX) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/lax/las/los-angeles-to-las-vegas) - [Cheap Flights from Dallas (DFW) to London (LHR)](https://expedia.co.uk/lp/flights/dfw/lhr/dallas-to-london) - [Cheap Flights from Manchester (MAN) to Dallas (DFW)](https://expedia.co.uk/lp/flights/man/dfw/manchester-to-dallas) - [Cheap Flights from San Francisco (SFO) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/sfo/las/san-francisco-to-las-vegas) - [Cheap Flights from New York (JFK) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/jfk/las/new-york-to-las-vegas) - [Cheap Flights from London (LHR) to New York (NYC)](https://expedia.co.uk/lp/flights/lhr/nyc/london-to-new-york) - [Cheap Flights from London (LHR) to San Diego (SAN)](https://expedia.co.uk/lp/flights/lhr/san/london-to-san-diego) - [Cheap Flights from Dublin (DUB) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/dub/las/dublin-to-las-vegas) - [Cheap Flights from Glasgow (GLA) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/gla/las/glasgow-to-las-vegas) - [Cheap Flights from London (LHR) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [Cheap Flights from Boston (BOS) to New York (JFK)](https://expedia.co.uk/lp/flights/bos/jfk/boston-to-new-york) - [Cheap Flights from London (LHR) to Dallas (DFW)](https://expedia.co.uk/lp/flights/lhr/dfw/london-to-dallas) \*Available to Expedia members. ![](https://a.travel-assets.com/mad-service/footer/bnaBanners/BEX_Footer.jpg) ## Go further with the Expedia app Save on select hotels when you book in the app. Our app deals help you to save on trips so you can travel more and manage it all on the go. Scan the QR code with your device camera and download our app ![QR code to download the app](https://a.travel-assets.com/mad-service/qr-code/footer_qr/3_QR_FOOTER.png)