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Cheap flights from Cardiff to Philadelphia from £697

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 21/9. 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

Find the cheapest flights from Cardiff to Philadelphia

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:45 - 23:12CWL  Cardiff Wales-PHL Philadelphia
18h 27m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
Multiple Airlines Logo
13:24 - 09:15PHL  Philadelphia-CWL Cardiff Wales
14h 51m2 stops Boston Logan Intl Amsterdam Schiphol
£697Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Virgin Atlantic Logo
17:15 - 15:54CWL  Cardiff Wales-PHL Philadelphia
51h 39m2 stops Amsterdam Schiphol Boston Logan Intl
Virgin Atlantic Logo
15:54 - 16:45PHL  Philadelphia-CWL Cardiff Wales
43h 51m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
£736Virgin Atlantic
Sun, 20 Sep - Sun, 27 Sep
Delta Logo
09:45 - 23:12CWL  Cardiff Wales-PHL Philadelphia
18h 27m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
Delta Logo
09:25 - 09:15PHL  Philadelphia-CWL Cardiff Wales
18h 50m2 stops Boston Logan Intl Amsterdam Schiphol
£742Delta
Thu, 17 Sep - Thu, 24 Sep
Delta Logo
09:45 - 23:12CWL  Cardiff Wales-PHL Philadelphia
18h 27m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
Delta Logo
07:10 - 09:15PHL  Philadelphia-CWL Cardiff Wales
21h 05m2 stops Boston Logan Intl Amsterdam Schiphol
£769Delta
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
14:45 - 18:55CWL  Cardiff Wales-PHL Philadelphia
33h 10m2 stops Malaga Dublin
Multiple Airlines Logo
20:25 - 21:45PHL  Philadelphia-CWL Cardiff Wales
20h 20m1 stop Dublin
£837Multiple Airlines
Sun, 20 Sep - Sun, 27 Sep
Multiple Airlines Logo
22:10 - 18:55CWL  Cardiff Wales-PHL Philadelphia
25h 45m1 stop Dublin
Multiple Airlines Logo
20:25 - 22:50PHL  Philadelphia-CWL Cardiff Wales
21h 25m1 stop Dublin
£848Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
21:45 - 18:55CWL  Cardiff Wales-PHL Philadelphia
26h 10m1 stop Dublin
Multiple Airlines Logo
20:25 - 21:45PHL  Philadelphia-CWL Cardiff Wales
20h 20m1 stop Dublin
£860Multiple Airlines
Sun, 20 Sep - Sun, 27 Sep
Multiple Airlines Logo
17:15 - 21:32CWL  Cardiff Wales-PHL Philadelphia
33h 17m3 stops Amsterdam Schiphol Frankfurt am Main Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
17:40 - 09:15PHL  Philadelphia-CWL Cardiff Wales
34h 35m2 stops Frankfurt am Main Amsterdam Schiphol
£895Multiple Airlines
Sun, 20 Sep - Sun, 27 Sep
Multiple Airlines Logo
22:10 - 17:48CWL  Cardiff Wales-PHL Philadelphia
24h 38m2 stops Dublin Boston Logan Intl
Multiple Airlines Logo
20:25 - 22:50PHL  Philadelphia-CWL Cardiff Wales
21h 25m1 stop Dublin
£914Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
22:50 - 18:55CWL  Cardiff Wales-PHL Philadelphia
25h 05m1 stop Dublin
Multiple Airlines Logo
20:25 - 06:55PHL  Philadelphia-CWL Cardiff Wales
29h 30m1 stop Dublin
£948Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep

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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 8 August 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
Fastest return journey

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Mon 21/9

09:45-23:12

2 stops18h 27m

Philadelphia

Mon 28/9

13:24-09:15

2 stops14h 51m

£697

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Sun 20/9

17:15-15:54

2 stops51h 39m

Philadelphia

Sun 27/9

15:54-16:45

2 stops43h 51m

£736

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Thu 17/9

09:45-23:12

2 stops18h 27m

Philadelphia

Thu 24/9

09:25-09:15

2 stops18h 50m

£742

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Sat 19/9

09:45-23:12

2 stops18h 27m

Philadelphia

Sat 26/9

07:10-09:15

2 stops21h 05m

£769

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Sun 20/9

14:45-18:55

2 stops33h 10m

Philadelphia

Sun 27/9

20:25-21:45

1 stop20h 20m

£837

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Mon 21/9

22:10-18:55

1 stop25h 45m

Philadelphia

Mon 28/9

20:25-22:50

1 stop21h 25m

£848

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Sun 20/9

21:45-18:55

1 stop26h 10m

Philadelphia

Sun 27/9

20:25-21:45

1 stop20h 20m

£860

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Sun 20/9

17:15-21:32

3 stops33h 17m

Philadelphia

Sun 27/9

17:40-09:15

2 stops34h 35m

£895

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Mon 21/9

22:10-17:48

2 stops24h 38m

Philadelphia

Mon 28/9

20:25-22:50

1 stop21h 25m

£914

CardiffPhiladelphia

CWL Cardiff Wales - PHL Philadelphia

CWLPHL

Cardiff Wales

Thu 17/9

22:50-18:55

1 stop25h 05m

Philadelphia

Thu 24/9

20:25-06:55

1 stop29h 30m

£948

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?

Aer Lingus, Virgin Atlantic and KLM are the top three most popular airlines that fly to Philadelphia from Cardiff according to our data. Aer Lingus is the first choice among our users, with 46% 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

18h 27m

Direct flights

None
The fastest flight from Cardiff to Philadelphia takes 18h 27m
There are no direct flights from Cardiff to Philadelphia. There are no popular flight routes from Cardiff to Philadelphia.
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Frequently asked questions about flying from Cardiff to Philadelphia

  • 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 18h 27m.

  • 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 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.

Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Bridgeport
Vineland
Newark
Reading
Rehoboth Beach
Dover
Essington
Ephrata
Cherry Hill
Dewey Beach
Wildwood
West Chester

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.

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