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Cheap flights from Philadelphia to Cardiff from £794

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — CWL
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Philadelphia to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from Philadelphia to Cardiff
Explore the most affordable flight options available from Philadelphia to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 March 2026.

Thu 30/419:38
PHL
-
CWL
2 stops32h 37m
Multiple Airlines
Thu 7/517:15
CWL
-
PHL
2 stops27h 57m
Multiple Airlines
Deal found 16/3£794
Fri 17/411:34
PHL
-
CWL
2 stops16h 41m
KLM
Tue 21/409:45
CWL
-
PHL
2 stops18h 05m
KLM
Deal found 18/3£853
Fri 17/411:34
PHL
-
CWL
2 stops16h 41m
Delta
Tue 21/409:45
CWL
-
PHL
2 stops18h 05m
Delta
Deal found 18/3£859
Fri 17/411:34
PHL
-
CWL
2 stops16h 41m
KLM
Fri 24/409:45
CWL
-
PHL
2 stops20h 14m
KLM
Deal found 18/3£862
Fri 1/517:40
PHL
-
CWL
2 stops34h 30m
Multiple Airlines
Fri 8/522:45
CWL
-
PHL
1 stop25h 10m
Multiple Airlines
Deal found 17/3£889
Thu 21/512:03
PHL
-
CWL
2 stops29h 17m
Multiple Airlines
Wed 27/523:30
CWL
-
PHL
1 stop24h 25m
Multiple Airlines
Deal found 17/3£944
Fri 17/420:25
PHL
-
CWL
2 stops31h 45m
Multiple Airlines
Fri 24/422:45
CWL
-
PHL
1 stop25h 10m
Multiple Airlines
Deal found 18/3£949
Thu 16/422:05
PHL
-
CWL
2 stops32h 25m
Multiple Airlines
Mon 20/412:00
CWL
-
PHL
2 stops29h 10m
Multiple Airlines
Deal found 15/3£962
Fri 17/420:25
PHL
-
CWL
2 stops15h 40m
Multiple Airlines
Tue 21/423:15
CWL
-
PHL
1 stop24h 40m
Multiple Airlines
Deal found 18/3£1,025

Find flight deals from Philadelphia to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Cardiff (CWL). 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 19 March 2026.

Round-trip from

£794
KLM
  • KLM
  • 30/4-7/5
  • 4 total stops
  • 60h 34m total
  • Philadelphia to Cardiff
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Philadelphia to Cardiff 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 858,174 searches. Data last updated 19 March 2026.
Use the filters below to find and compare flights from Philadelphia to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Thu 30/4

19:38-09:15

2 stops32h 37m

Cardiff Wales

Thu 7/5

17:15-16:12

2 stops27h 57m

£794
Fastest return journey

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 17/4

11:34-09:15

2 stops16h 41m

Cardiff Wales

Tue 21/4

09:45-22:50

2 stops18h 05m

£859

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 17/4

11:34-09:15

2 stops16h 41m

Cardiff Wales

Fri 24/4

09:45-00:59

2 stops20h 14m

£862

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 1/5

17:40-09:10

2 stops34h 30m

Cardiff Wales

Fri 8/5

22:45-18:55

1 stop25h 10m

£889

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 17/4

20:25-09:10

2 stops31h 45m

Cardiff Wales

Fri 24/4

22:45-18:55

1 stop25h 10m

£949

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Thu 16/4

22:05-11:30

2 stops32h 25m

Cardiff Wales

Mon 20/4

12:00-12:10

2 stops29h 10m

£962

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 1/5

17:32-17:05

2 stops18h 33m

Cardiff Wales

Fri 8/5

09:45-00:57

2 stops20h 12m

£1,025

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Thu 21/5

22:10-11:30

2 stops32h 20m

Cardiff Wales

Wed 27/5

12:00-12:10

2 stops29h 10m

£1,138

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 17/4

20:25-09:15

2 stops31h 50m

Cardiff Wales

Tue 21/4

12:00-18:55

3 stops35h 55m

£1,313

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Sorted by cheapest first

Best time to book a flight from Philadelphia to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Philadelphia with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Cardiff

What is the cheapest month to book a flight from Philadelphia to Cardiff?

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Cardiff (average of £404). Flying from Philadelphia to Cardiff in June is currently the most expensive (average of £1,039). 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.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Philadelphia to Cardiff?

    Delta and KLM can get you from Philadelphia to Cardiff in just under 16h 41m. Your travel time can differ by up to . Philadelphia and Cardiff are separated by a distance of 3416 mi.

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

    Yes. In addition to deals on Philadelphia to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Cardiff?

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

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

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

  • What is the cheapest month to book a flight from Philadelphia to Cardiff?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Cardiff (average of £404). Flying from Philadelphia to Cardiff in June is currently the most expensive (average of £1,039). 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

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

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How does Cheapflights help users find flights from Philadelphia to Cardiff?

When you search for this flight from Philadelphia to Cardiff, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Cardiff?

Cheapflights helps you find that perfect flight to Cardiff from Philadelphia by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Philadelphia to Cardiff with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Philadelphia to Cardiff, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Philadelphia to Cardiff become cheaper?

Yes! Start tracking prices for Philadelphia to Cardiff flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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