$757 Cheap Flights from Cardiff (CWL) to Portland (PDX)

View $757 flight on Sun, Feb 22, 2026Opens in a new window

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

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Cheap Flights from Cardiff to Portland (CWL-PDX)

Prices were available within the past 7 days and start at $757 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Cardiff (CWL) to Portland (PDX)
Origin airport
Cardiff Intl.
Destination airport
Portland Intl.
Distance
4824 mi

Cardiff to Portland Flights

The cheapest times to fly from Cardiff to Portland

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

 

The best time to book a flight from Cardiff to Portland

Sunday is one of the best days to book for cheap flights from Cardiff to Portland: 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 Cardiff to Portland

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 Cardiff to Portland in 2026. You can also book with separate airlines for your outbound and return journeys, from $757 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 Cardiff to Portland 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 Cardiff to Portland 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 Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX) cost?
Secure a cheap one-way flight from $757 or cheap return flight from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX) 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 Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX)?
is the most affordable month to fly from CWL to PDX. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest CWL to PDX flight.
How many flights per day from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX)?
Direct flights from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CWL to PDX?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX)?
Select a flight from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX) last-minute?
Waiting until right before your break to book a ticket from CWL to PDX often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Keep your travel schedule open to boost your chances of getting a bargain.
Is it cheaper to book a CWL to PDX flight and hotel package?
Compared with arranging flights and hotels separately, booking a CWL to PDX flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Cardiff Intl. Airport (CWL) to Portland Intl. Airport (PDX)?
If you booked your CWL to PDX flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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