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Cheap flights from Cardiff to Philadelphia from £760

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Philadelphia departing on 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Cardiff to Philadelphia

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
09:45 - 22:12
CWL
-
PHL
17h 27m
2 stops
Delta Logo
06:00 - 09:15
PHL
-
CWL
22h 15m
2 stops
£760Delta
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
22:45 - 18:55
CWL
-
PHL
25h 10m
1 stop
Multiple Airlines Logo
20:25 - 08:55
PHL
-
CWL
31h 30m
2 stops
£949Multiple Airlines
Fri, 1 May - Fri, 8 May
KLM Logo
17:15 - 22:37
CWL
-
PHL
34h 22m
2 stops
KLM Logo
13:20 - 16:45
PHL
-
CWL
22h 25m
2 stops
£1,104KLM
Thu, 13 Aug - Mon, 31 Aug
Multiple Airlines Logo
06:40 - 18:55
CWL
-
PHL
17h 15m
2 stops
Multiple Airlines Logo
20:25 - 22:50
PHL
-
CWL
21h 25m
1 stop
£1,111Multiple Airlines
Thu, 13 Aug - Mon, 31 Aug
Virgin Atlantic Logo
09:45 - 01:01
CWL
-
PHL
20h 16m
2 stops
Virgin Atlantic Logo
17:38 - 09:15
PHL
-
CWL
34h 37m
2 stops
£1,300Virgin Atlantic
Thu, 13 Aug - Mon, 31 Aug
Multiple Airlines Logo
17:15 - 18:55
CWL
-
PHL
30h 40m
2 stops
Multiple Airlines Logo
06:00 - 17:05
PHL
-
CWL
30h 05m
3 stops
£1,460Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
09:45 - 16:40
CWL
-
PHL
35h 55m
3 stops
Multiple Airlines Logo
06:00 - 17:05
PHL
-
CWL
30h 05m
3 stops
£1,475Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
09:45 - 21:34
CWL
-
PHL
16h 49m
2 stops
Multiple Airlines Logo
15:25 - 16:45
PHL
-
CWL
20h 20m
3 stops
£2,330Multiple Airlines
Thu, 13 Aug - Mon, 31 Aug

momondo Fare Finder

 
Customise your flight search to find flights from Cardiff to Philadelphia 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, momondo users made 279,928 searches. Data last updated 21 March 2026.
Use the filters below to find and compare flights from Cardiff to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Fri 1/5

09:45-22:12

2 stops17h 27m

Philadelphia

Fri 8/5

06:00-09:15

2 stops22h 15m

£760

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Fri 1/5

22:45-18:55

1 stop25h 10m

Philadelphia

Fri 8/5

20:25-08:55

2 stops31h 30m

£949

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Thu 13/8

17:15-22:37

2 stops34h 22m

Philadelphia

Mon 31/8

13:20-16:45

2 stops22h 25m

£1,104

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Thu 13/8

06:40-18:55

2 stops17h 15m

Philadelphia

Mon 31/8

20:25-22:50

1 stop21h 25m

£1,111

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Thu 13/8

09:45-01:01

2 stops20h 16m

Philadelphia

Mon 31/8

17:38-09:15

2 stops34h 37m

£1,300

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Fri 1/5

17:15-18:55

2 stops30h 40m

Philadelphia

Fri 8/5

06:00-17:05

3 stops30h 05m

£1,460

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Fri 1/5

09:45-16:40

3 stops35h 55m

Philadelphia

Fri 8/5

06:00-17:05

3 stops30h 05m

£1,475
Fastest return journey

CardiffPhiladelphia

CWL - PHL

CWLPHL

Cardiff Wales

Thu 13/8

09:45-21:34

2 stops16h 49m

Philadelphia

Mon 31/8

15:25-16:45

3 stops20h 20m

£2,330

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Philadelphia from

How to get the cheapest flight ticket from Cardiff to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Which airlines fly to Philadelphia?

KLM, Virgin Atlantic and Aer Lingus are the top three most popular airlines that fly to Philadelphia from Cardiff according to our data. KLM is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Philadelphia. Keep in mind that there are 3 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

When to book flights from Cardiff to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to Philadelphia (CWL to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Philadelphia

Fastest flight time

20h 16m

Direct flights

None
The fastest flight from Cardiff to Philadelphia takes 20h 16m
There are no direct flights from Cardiff to Philadelphia. There are no popular flight routes from Cardiff to Philadelphia.
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  • How far is Cardiff Wales to Philadelphia by plane?

    Cardiff Wales and Philadelphia are 3414.0 mi apart from one another. By plane, this route typically takes 20h 16m.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Philadelphia Airport?

    Prices for flights from Cardiff Wales Airport to Philadelphia Airport are updated daily.

  • How many operators does momondo search for flights from Cardiff Wales Airport to Philadelphia Airport?

  • How old do you have to be to fly from Cardiff Wales Airport to Philadelphia Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Cardiff to Philadelphia?

Best airlines flying from Cardiff to Philadelphia

Compare and see reviews for airlines that fly from Cardiff to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom £534Free CancellationRating
7.8
1,475 reviews
Search KLM flights

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Newark
Vineland
King of Prussia
Dover
Essington
Reading
Rehoboth Beach
Cherry Hill
Dewey Beach

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Philadelphia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Cardiff to Philadelphia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Cardiff to Philadelphia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Cardiff to Philadelphia flights to just show those with flexible booking policies.

How can momondo help me find flights from Cardiff to Philadelphia?

Once all potential Cardiff to Philadelphia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Cardiff to Philadelphia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Cardiff to Philadelphia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Philadelphia and let you know when they change.

An easier way to manage your Philadelphia trip

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