$540 Cheap Flights from Milwaukee (MKE) to Cardiff (CWL)

View $540 flight on Wed, Apr 8, 2026Opens in a new window

Popular airlines from General Mitchell Intl. Airport (MKE) to Cardiff International Airport (CWL)

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Cheap Flights from Milwaukee to Cardiff (MKE-CWL)

Prices were available within the past 7 days and start at $540 for one-way flights and $853 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Sun, Sep 21 - Tue, Sep 23
MKE
Milwaukee
CWL
Cardiff
$853 Roundtrip, found 5 days ago
$853
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Sun, Sep 21 from Milwaukee to Cardiff, returning Tue, Sep 23, priced at $853 found 5 days ago
Delta
Mon, Sep 15 - Tue, Sep 23
MKE
Milwaukee
CWL
Cardiff
$904 Roundtrip, found 5 days ago
$904
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 15 from Milwaukee to Cardiff, returning Tue, Sep 23, priced at $904 found 5 days ago
Delta
Sun, Sep 21 - Wed, Sep 24
MKE
Milwaukee
CWL
Cardiff
$908 Roundtrip, found 6 days ago
$908
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Sep 21 from Milwaukee to Cardiff, returning Wed, Sep 24, priced at $908 found 6 days ago
Virgin Atlantic
Mon, Nov 10 - Sun, Nov 16
MKE
Milwaukee
CWL
Cardiff
$927 Roundtrip, found 6 hours ago
$927
Roundtrip
found 6 hours ago
Select Virgin Atlantic flight, departing Mon, Nov 10 from Milwaukee to Cardiff, returning Sun, Nov 16, priced at $927 found 6 hours ago
Delta
Mon, Sep 15 - Thu, Sep 25
MKE
Milwaukee
CWL
Cardiff
$930 Roundtrip, found 5 days ago
$930
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 15 from Milwaukee to Cardiff, returning Thu, Sep 25, priced at $930 found 5 days ago
Virgin Atlantic
Mon, Nov 10 - Sun, Nov 16
MKE
Milwaukee
CWL
Cardiff
$933 Roundtrip, found 6 hours ago
$933
Roundtrip
found 6 hours ago
Select Virgin Atlantic flight, departing Mon, Nov 10 from Milwaukee to Cardiff, returning Sun, Nov 16, priced at $933 found 6 hours ago
Delta
Sun, Sep 21 - Thu, Sep 25
MKE
Milwaukee
CWL
Cardiff
$934 Roundtrip, found 5 days ago
$934
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Sep 21 from Milwaukee to Cardiff, returning Thu, Sep 25, priced at $934 found 5 days ago
Delta
Mon, Sep 15 - Sun, Sep 21
MKE
Milwaukee
CWL
Cardiff
$954 Roundtrip, found 5 days ago
$954
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 15 from Milwaukee to Cardiff, returning Sun, Sep 21, priced at $954 found 5 days ago
KLM
Fri, Sep 19 - Sun, Sep 21
MKE
Milwaukee
CWL
Cardiff
$979 Roundtrip, found 6 days ago
$979
Roundtrip
found 6 days ago
Select KLM flight, departing Fri, Sep 19 from Milwaukee to Cardiff, returning Sun, Sep 21, priced at $979 found 6 days ago
Air France
Thu, Sep 18 - Tue, Sep 23
MKE
Milwaukee
CWL
Cardiff
$2,759 Roundtrip, found 5 days ago
$2,759
Roundtrip
found 5 days ago
Select Air France flight, departing Thu, Sep 18 from Milwaukee to Cardiff, returning Tue, Sep 23, priced at $2,759 found 5 days ago
Flights from Milwaukee (MKE) to Cardiff (CWL)
Origin airport
General Mitchell Intl.
Destination airport
Cardiff Intl.
Roundtrip price
$852
Distance
3789 mi

Milwaukee to Cardiff Flights

The cheapest times to fly from Milwaukee to Cardiff

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Milwaukee to Cardiff are during the month of September. You can find some of the cheapest flights from Milwaukee to Cardiff with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Milwaukee to Cardiff

Sunday is one of the best days to book for cheap flights from Milwaukee to Cardiff: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Milwaukee to Cardiff

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Milwaukee to Cardiff in 2025. You can also book with separate airlines for your outbound and return journeys, from $540 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Milwaukee to Cardiff flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Milwaukee to Cardiff airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL) cost?
Secure a cheap one-way flight from $540 or cheap return flight from $853 from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL)?
The cheapest month to fly from MKE to CWL is September, when there's less demand. Off-peak months are generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest MKE to CWL flight.
How many flights per day from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL)?
You'll need to book a flight with a layover when traveling from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from MKE to CWL?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL)?
To avoid possible delays on the General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL) last-minute?
Last-minute bookings from MKE to CWL are usually more expensive. For the lowest prices, start searching for flights well in advance. That being said, if you're flexible with your travel dates, you may land a cheap ticket just before your departure.
Is it cheaper to book a MKE to CWL flight and hotel package?
Securing a MKE to CWL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of accommodations and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from General Mitchell Intl. Airport (MKE) to Cardiff Intl. Airport (CWL)?
You can usually cancel or reschedule your MKE to CWL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.