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Cheap flights from Philadelphia to Cardiff from $782

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Cardiff departing on 3/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:33 pm - 9:50 am
PHL
-
CWL
12h 17m
2 stops
Multiple Airlines Logo
5:15 pm - 9:23 pm
CWL
-
PHL
33h 08m
2 stops
$782Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
6:30 pm - 1:25 pm
PHL
-
CWL
38h 55m
2 stops
Multiple Airlines Logo
10:25 pm - 6:55 pm
CWL
-
PHL
25h 30m
1 stop
$1,048Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Delta Logo
6:00 am - 9:15 am
PHL
-
CWL
22h 15m
2 stops
Delta Logo
9:45 am - 12:25 am
CWL
-
PHL
19h 40m
2 stops
$1,237Delta
Fri, Jul 10 - Fri, Jul 17
Multiple Airlines Logo
10:05 am - 10:15 am
PHL
-
CWL
19h 10m
2 stops
Multiple Airlines Logo
10:45 pm - 9:34 pm
CWL
-
PHL
27h 49m
3 stops
$1,596Multiple Airlines
Fri, Jul 10 - Fri, Jul 17
Multiple Airlines Logo
10:05 am - 10:15 am
PHL
-
CWL
19h 10m
3 stops
Multiple Airlines Logo
10:45 pm - 9:34 pm
CWL
-
PHL
27h 49m
3 stops
$1,674Multiple Airlines
Fri, Jul 10 - Fri, Jul 17
Multiple Airlines Logo
10:35 am - 10:15 am
PHL
-
CWL
18h 40m
1 stop
Multiple Airlines Logo
10:45 pm - 10:46 pm
CWL
-
PHL
29h 01m
2 stops
$1,711Multiple Airlines
Fri, Jul 10 - Fri, Jul 17
KLM Logo
12:29 pm - 9:50 am
PHL
-
CWL
16h 21m
2 stops
KLM Logo
10:20 am - 10:55 am
CWL
-
PHL
28h 35m
2 stops
$3,338KLM
Sat, Mar 7 - Fri, Mar 13
KLM Logo
5:22 pm - 4:50 pm
PHL
-
CWL
18h 28m
2 stops
KLM Logo
10:20 am - 9:18 am
CWL
-
PHL
26h 58m
2 stops
$3,688KLM
Sat, Mar 7 - Fri, Mar 13
Multiple Airlines Logo
8:50 pm - 7:45 pm
PHL
-
CWL
17h 55m
1 stop
Multiple Airlines Logo
8:35 am - 5:15 pm
CWL
-
PHL
36h 40m
2 stops
$4,000Multiple Airlines
Sat, Mar 7 - Fri, Mar 13
Multiple Airlines Logo
8:50 pm - 7:45 pm
PHL
-
CWL
17h 55m
1 stop
Multiple Airlines Logo
8:35 am - 5:15 pm
CWL
-
PHL
36h 40m
2 stops
$4,003Multiple Airlines
Sat, Mar 7 - Fri, Mar 13

KLM flights from Philadelphia to Cardiff

Our best KLM deals on Philadelphia to Cardiff flight tickets
KLM
Mar 7
PHL12:29 pmPhiladelphia
16h 21m
2 stops
CWL9:50 amCardiff Wales
Mar 13
CWL10:20 amCardiff Wales
28h 35m
2 stops
PHL10:55 amPhiladelphia
$3,338
KLM
Mar 7
PHL5:22 pmPhiladelphia
18h 28m
2 stops
CWL4:50 pmCardiff Wales
Mar 13
CWL10:20 amCardiff Wales
26h 58m
2 stops
PHL9:18 amPhiladelphia
$3,688

momondo Fare Finder

 
Customize 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, momondo users made 832,500 searches. Data last updated February 9, 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

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Mon 3/23

5:33 pm-9:50 am

2 stops12h 17m

Cardiff Wales

Mon 3/30

5:15 pm-9:23 pm

2 stops33h 08m

$782

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Mon 3/23

6:30 pm-1:25 pm

2 stops38h 55m

Cardiff Wales

Mon 3/30

10:25 pm-6:55 pm

1 stop25h 30m

$1,048

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 7/10

6:00 am-9:15 am

2 stops22h 15m

Cardiff Wales

Fri 7/17

9:45 am-12:25 am

2 stops19h 40m

$1,237

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 7/10

10:05 am-10:15 am

2 stops19h 10m

Cardiff Wales

Fri 7/17

10:45 pm-9:34 pm

3 stops27h 49m

$1,596

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 7/10

10:05 am-10:15 am

3 stops19h 10m

Cardiff Wales

Fri 7/17

10:45 pm-9:34 pm

3 stops27h 49m

$1,674

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Fri 7/10

10:35 am-10:15 am

1 stop18h 40m

Cardiff Wales

Fri 7/17

10:45 pm-10:46 pm

2 stops29h 01m

$1,711

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Sat 3/7

12:29 pm-9:50 am

2 stops16h 21m

Cardiff Wales

Fri 3/13

10:20 am-10:55 am

2 stops28h 35m

$3,338

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Sat 3/7

5:22 pm-4:50 pm

2 stops18h 28m

Cardiff Wales

Fri 3/13

10:20 am-9:18 am

2 stops26h 58m

$3,688

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Sat 3/7

8:50 pm-7:45 pm

1 stop17h 55m

Cardiff Wales

Fri 3/13

8:35 am-5:15 pm

2 stops36h 40m

$4,000

PhiladelphiaCardiff

PHL - CWL

PHLCWL

Philadelphia

Sat 3/7

8:50 pm-7:45 pm

1 stop17h 55m

Cardiff Wales

Fri 3/13

8:35 am-5:15 pm

2 stops36h 40m

$4,003

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Philadelphia to Cardiff

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

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

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

Fastest flight time

22h 15m

Direct flights

None
The fastest flight from Philadelphia to Cardiff takes 22h 15m
There are no direct flights from Philadelphia to Cardiff. There are no popular flight routes from Philadelphia to Cardiff.
Search flight deals

  • How far is Philadelphia to Cardiff Wales by plane?

    The straight-line distance from Philadelphia to Cardiff Wales is 3414.0 mi. In terms of flight time, this usually takes a little over 22h 15m.

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

    Prices for flights from Philadelphia Airport to Cardiff Wales Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Cardiff Wales Airport.

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

    The travel and health documents you'll need for your trip to Cardiff Wales Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cardiff Wales Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Philadelphia to Cardiff?

    Price Alerts will notify you by email when the price for flights to Cardiff from Philadelphia decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Philadelphia to Cardiff with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

Finding the right flight to Cardiff from Philadelphia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Cardiff quick and easy, saving you time and money.

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

Flights from Philadelphia to Cardiff with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Cardiff from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Cardiff from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Aer Lingus