Cheap Flights from Cardiff (CWL) to Philadelphia (PHLA)

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Flight deals from Cardiff Airport to Philadelphia

Looking for a cheap last-minute deal or the best return flight from Cardiff Airport to Philadelphia? If you want to travel next month, return fares start from £675. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Cardiff to Philadelphia

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

Cardiff to Philadelphia: Flight information

The things to know before you go.
Cheapest flight found£285
Cheapest month to flyApril

Finding cheap flights from Cardiff to Philadelphia: Frequently asked questions

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.
The best price we found for a return flight from Cardiff to Philadelphia is £675. 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.
Currently, there are no airlines that fly direct from Cardiff to Philadelphia. But we found flights with one or more stops from £675.
As of March 2026, there are no flights flying from Cardiff to Philadelphia.
The cheapest month to fly from Cardiff to Philadelphia is usually April.
If you're flying from Cardiff Airport, the cheapest airport near Philadelphia is Philadelphia International – which is 7.0 miles away from the centre of Philadelphia. We've found flights into this airport from £675.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cardiff Airport to Philadelphia on Sunday, 19 April 2026.
No airlines currently offer direct flights between Cardiff Airport and Philadelphia. Most routes have one or more stops.
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.
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.
In March, the average temperature is usually around 4°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.
Currently, Ryanair offers the cheapest flight tickets to Philadelphia.

Travelling from Cardiff Airport (CWL) to Philadelphia: what you need to know

  • The timezone in Philadelphia is UTC-4. The city is four hours behind Cardiff, where Cardiff Airport is located.

  • Leave plenty of time to make your CWL to Philadelphia flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Longer lines at check-in and security are more likely if you're flying during high season, so give yourself some extra breathing room. A good general rule for peak times? Get there up to four hours ahead for international flights and at least two hours for domestic departures.

  • Stopovers offer the opportunity to visit a new city or just have a break during your journey. When booking your plane ticket from CWL to Philadelphia, uncheck 'Direct flights only' to explore all potential stops. Amsterdam Airport Schiphol (AMS) is a popular stop on this route.

  • Located around 9 miles from central Cardiff, CWL can be reached in about 30 minutes by car (depending on traffic). The journey on public transport will take roughly 1 hour 5 minutes.

  • Want an easy start to your trip? Stay near CWL. Whether you're catching an early flight from Cardiff Airport to Philadelphia or don't want departure day to feel hectic, these hotels are all about convenience:

  • When it comes to the on-time performance of Cardiff Airport, 66.16% of flights complete their journey on time.

How to find the cheapest flights from Cardiff Airport (CWL) to Philadelphia

  • £285 is the cheapest price we've seen for a one-way Cardiff Airport to Philadelphia flight. A return plane ticket right now is £675. Depending on when you book and the availability, these fares may change.

  • Don't leave things to the last minute. You're more likely to land cheap flights from CWL to Philadelphia if you book in advance. Airlines often offer some amazing early bird deals.

  • If you can be flexible with your trip dates, try using the 'Whole month' search tool. It'll give you the cheapest price across each month when searching for your Cardiff Airport to Philadelphia ticket.

  • You don't need to keep looking every day to find out if fares have dropped when you set up a Price Alert. We'll let you know the moment there's an even bigger deal on cheap flights from CWL to Philadelphia.

  • Pick your ideal arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Cardiff Airport to Philadelphia by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) is around 12 miles from central Philadelphia. If you're opting for a ride-share or a cab, the drive takes about 15 minutes.

  • Getting there on public transport will take you around 45 minutes.

  • If you have a late flight from Cardiff Airport to Philadelphia, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and snoozing soon after at one of these hotels near PHL:

  • Go wherever you want, whenever you want with a Philadelphia International Airport rental car. Pick up your wheels from Dollar, Thrifty or Budget and venture far and wide through Philadelphia and beyond.

  • Reserving your vehicle from Philadelphia International Airport around three weeks before your flight from CWL to Philadelphia can help you get the lowest rate.

  • You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • The centre of Philadelphia is located around 35 miles from Trenton-Mercer Airport (TTN). Once your flight from Cardiff Airport to Philadelphia has hit the runway and you've made your way through the terminal, expect a drive of about 40 minutes.

  • If you choose to travel on public transport, you'll reach the centre in 1 hour 45 minutes or so.

  • There are some comfortable places to call home for the night near TTN. Kick back and get cosy after your CWL to Philadelphia flight at one of these perfectly located options:

  • Forget about inconvenient public transport schedules or slow-moving cab lines. Pick up a Trenton-Mercer Airport rental car and let your trip unfold on your terms. Compare offers from Budget, National and Enterprise.

  • Avoid last-minute price surges. Securing your ride four weeks ahead of your arrival at TTN will help you stay within budget.

  • You'll find Trenton-Mercer Airport at Scotch Road, Terminal Building.

Best time to go to Philadelphia

  • Before scheduling your flights from Cardiff Airport to Philadelphia, consider which time of year works best for you. Peak season in Philadelphia offers a bustling atmosphere and plenty of activities, while the off-season means you'll get cheaper hotel deals and smaller crowds.

  • When booking your Cardiff Airport to Philadelphia plane ticket, think about what kind of weather works for you. July is the warmest month in Philadelphia, with temperatures ranging from 18ºC (64ºF) to 32ºC (90ºF).

  • If you want to travel in cooler conditions, search for a cheap ticket from CWL to Philadelphia in January when temperatures average between -7ºC (19ºF) and 9ºC (48ºF).

More about Philadelphia

Explore more of United States

  • Philadelphia has its own special appeal, but there are so many other parts of United States you should also see. Around 80 miles north-east of Philadelphia, a visit to New York will keep you on the go. Check out popular attractions like Statue of Liberty, Central Park and Empire State Building.

  • Around 270 miles north-east of Philadelphia, Boston is another favourite stop in United States. Experience this destination's highlights firsthand at Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.