$511 Cheap Flights from Portland (PDX) to Cardiff (CWL)

View $511 flight on Wed, Mar 18, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Cardiff International Airport (CWL)

Cheap Flights from Portland to Cardiff (PDX-CWL)

Prices were available within the past 7 days and start at $511 for one-way flights and $925 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jan 6 - Fri, Jan 9
PDX
Portland
CWL
Cardiff
$925 Roundtrip, found 3 days ago
$925
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 6 from Portland to Cardiff, returning Fri, Jan 9, priced at $925 found 3 days ago
Delta
Tue, Jan 6 - Fri, Jan 9
PDX
Portland
CWL
Cardiff
$931 Roundtrip, found 3 days ago
$931
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 6 from Portland to Cardiff, returning Fri, Jan 9, priced at $931 found 3 days ago
Delta
Tue, Jan 6 - Fri, Jan 9
PDX
Portland
CWL
Cardiff
$931 Roundtrip, found 3 days ago
$931
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 6 from Portland to Cardiff, returning Fri, Jan 9, priced at $931 found 3 days ago
Delta
Tue, Jan 6 - Fri, Jan 9
PDX
Portland
CWL
Cardiff
$933 Roundtrip, found 3 days ago
$933
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 6 from Portland to Cardiff, returning Fri, Jan 9, priced at $933 found 3 days ago
Delta
Tue, Jan 6 - Fri, Jan 9
PDX
Portland
CWL
Cardiff
$934 Roundtrip, found 3 days ago
$934
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 6 from Portland to Cardiff, returning Fri, Jan 9, priced at $934 found 3 days ago
Virgin Atlantic
Sun, Sep 28 - Sat, Oct 11
PDX
Portland
CWL
Cardiff
$935 Roundtrip, found 2 days ago
$935
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Sun, Sep 28 from Portland to Cardiff, returning Sat, Oct 11, priced at $935 found 2 days ago
Delta
Fri, Sep 19 - Sat, Sep 27
PDX
Portland
CWL
Cardiff
$940 Roundtrip, found 2 days ago
$940
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Sep 19 from Portland to Cardiff, returning Sat, Sep 27, priced at $940 found 2 days ago
Delta
Mon, Oct 27 - Tue, Nov 4
PDX
Portland
CWL
Cardiff
$940 Roundtrip, found 1 day ago
$940
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Oct 27 from Portland to Cardiff, returning Tue, Nov 4, priced at $940 found 1 day ago
KLM
Mon, Oct 27 - Tue, Nov 4
PDX
Portland
CWL
Cardiff
$988 Roundtrip, found 1 day ago
$988
Roundtrip
found 1 day ago
Select KLM flight, departing Mon, Oct 27 from Portland to Cardiff, returning Tue, Nov 4, priced at $988 found 1 day ago
Air France
Fri, May 1 - Sat, May 9
PDX
Portland
CWL
Cardiff
$1,239 Roundtrip, found 8 hours ago
$1,239
Roundtrip
found 8 hours ago
Select Air France flight, departing Fri, May 1 from Portland to Cardiff, returning Sat, May 9, priced at $1,239 found 8 hours ago

Alternative airports near Cardiff

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bristol Intl. BRS. Cheapest option available. Average driving time to city center is 1 hour 0 minutes. Flights from $1,221
BRS
Bristol Intl.
Cheapest
Average driving time to city center1 h 0 min
Flights from $1,221
Flights from Portland (PDX) to Cardiff (CWL)
Origin airport
Portland Intl.
Destination airport
Cardiff Intl.
Airlines serving
Delta, KLM, Virgin Atlantic
Roundtrip price
$925
Distance
4824 mi

Portland to Cardiff Flights

The cheapest times to fly from Portland 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 Portland to Cardiff are during the month of January. You can find some of the cheapest flights from Portland to Cardiff with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Cardiff

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Cardiff in 2025. You can also book with separate airlines for your outbound and return journeys, from $511 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 Portland 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 Portland 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 Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL) cost?
Secure a cheap one-way flight from $511 or cheap return flight from $925 from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL)?
The cheapest month to fly from PDX to CWL is January, when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL)?
To find the cheapest airline flying from PDX to CWL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL)?
You'll need to take a flight with a layover when traveling from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PDX to CWL?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL) route, fly before 3 PM. Departures after this hour are 22% more likely to be 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 Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL) last-minute?
Holding off until just before your departure to book your flight from PDX to CWL often results in higher prices. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book a PDX to CWL flight and hotel package?
You'll generally save money by booking a PDX to CWL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Cardiff Intl. Airport (CWL)?
If you reserved your PDX to CWL flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.