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£621 Cheap Flights from Cardiff (CWL) to Philadelphia (PHL)

View £621 flight on Sat, 17 Oct 2026Opens in a new window

Popular airlines from Cardiff International Airport (CWL) to Philadelphia International Airport (PHL)

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

Prices were available within the past 7 days and start at £621 for one-way flights and £962 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£962 Return, found 3 days ago
£962
Return
found 3 days ago
Select KLM flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £962 found 3 days ago
Aer Lingus
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£970 Return, found 3 days ago
£970
Return
found 3 days ago
Select Aer Lingus flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £970 found 3 days ago
Aer Lingus
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£974 Return, found 3 days ago
£974
Return
found 3 days ago
Select Aer Lingus flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £974 found 3 days ago
Aer Lingus
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£977 Return, found 3 days ago
£977
Return
found 3 days ago
Select Aer Lingus flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £977 found 3 days ago
Aer Lingus
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£982 Return, found 3 days ago
£982
Return
found 3 days ago
Select Aer Lingus flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £982 found 3 days ago
KLM
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£983 Return, found 3 days ago
£983
Return
found 3 days ago
Select KLM flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £983 found 3 days ago
KLM
Wed, 16 Dec - Wed, 30 Dec
CWL
Cardiff
PHL
Philadelphia
£991 Return, found 3 days ago
£991
Return
found 3 days ago
Select KLM flight, departing Wed, 16 Dec from Cardiff to Philadelphia, returning Wed, 30 Dec, priced at £991 found 3 days ago
Air France
Sat, 15 Aug - Fri, 21 Aug
CWL
Cardiff
PHL
Philadelphia
£1,161 Return, found 12 hours ago
£1,161
Return
found 12 hours ago
Select Air France flight, departing Sat, 15 Aug from Cardiff to Philadelphia, returning Fri, 21 Aug, priced at £1,161 found 12 hours ago
Delta
Tue, 21 Jul - Mon, 27 Jul
CWL
Cardiff
PHL
Philadelphia
£1,315 Return, found 2 days ago
£1,315
Return
found 2 days ago
Select Delta flight, departing Tue, 21 Jul from Cardiff to Philadelphia, returning Mon, 27 Jul, priced at £1,315 found 2 days ago
Virgin Atlantic
Sat, 15 Aug - Fri, 21 Aug
CWL
Cardiff
PHL
Philadelphia
£1,421 Return, found 12 hours ago
£1,421
Return
found 12 hours ago
Select Virgin Atlantic flight, departing Sat, 15 Aug from Cardiff to Philadelphia, returning Fri, 21 Aug, priced at £1,421 found 12 hours ago

Frequently asked questions

How much does a flight from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) cost?
You can find one-way and return flights from CWL 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 CWL to PHL ticket fares go up or down.
What is the cheapest month to fly from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The cheapest months to fly from CWL to 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 Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Enter CWL to PHL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
To find a cheap flight from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.), 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 time to fly from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
There are approximately 3 connecting flights per day from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.). Some common connection points include Schiphol (AMS), George Best Belfast City (BHD), and Newport Train Station (XNE).
What is the earliest flight from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from CWL to PHL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
There are no nonstop flights from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.). Flights with two or more stops typically take around 20 hours 18 minutes, covering a distance of approximately 5,501 kilometers. Flights with one stop usually take a bit longer, around 22 hours 48 minutes. Keep in mind that these are average travel times, and the actual duration can vary depending on your specific routing, layover times, and even weather conditions.
Can you fly business or first class from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Select the "Business class" and "First class" filters when looking for CWL to PHL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight with Expedia?
It's easy to earn miles on a Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) 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.
Is it cheaper to buy a plane ticket from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) at the last minute?
Typically, booking a last minute flight from Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) 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 Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package?
Securing a Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) 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 Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
If you booked your Cardiff (CWL-Cardiff Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) 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
Cardiff Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Air France, KLM, Virgin Atlantic
Return price
£961
Distance
5468 km

Book with confidence

Compare flights from Cardiff to Philadelphia easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Cardiff to Philadelphia. Operating between them flights per day, 20 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 Cardiff 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 Cardiff Intl. (CWL) to Philadelphia Intl. (PHL)

The easiest way to view the best deals on flights from Cardiff 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 Cardiff Intl. to Philadelphia Intl. start at just £962 and range up to £1,540.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Cardiff and Philadelphia
  • booking your flight during December, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Cardiff to Philadelphia flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Cardiff 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.  

Compare flights from Cardiff to Philadelphia easily and book with confidence

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*Available to Expedia members.