$3,107 Cheap Flights from Cardiff (CWL) to Portland (PWM)

View $3,107 flight on Mon, Aug 4, 2025Opens in a new window

Popular airlines from Cardiff International Airport (CWL) to Portland Intl. Jetport Airport (PWM)

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Cheap Flights from Cardiff to Portland (CWL-PWM)

Prices were available within the past 7 days and start at $3,107 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 (PWM)
Origin airport
Cardiff Intl.
Destination airport
Portland Intl. Jetport
Distance
3058 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 2025. You can also book with separate airlines for your outbound and return journeys, from $3,107 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. Jetport Airport (PWM) cost?
Discover the latest flight deals from CWL to PWM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from CWL to PWM?
The cheapest flights from CWL to PWM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from CWL to PWM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from CWL to PWM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Cardiff Intl. Airport (CWL) to Portland Intl. Jetport Airport (PWM)?
You'll need to take a flight with a layover when traveling from Cardiff Intl. Airport (CWL) to Portland Intl. Jetport Airport (PWM). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from CWL to PWM?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the airline, time of year 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 Cardiff Intl. Airport (CWL) to Portland Intl. Jetport Airport (PWM)?
To reach Portland Intl. Jetport Airport (PWM) without delays, pick a flight that leaves from Cardiff Intl. Airport (CWL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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. Jetport Airport (PWM) last-minute?
Waiting until just before your departure to book a ticket from CWL to PWM generally means paying more. Although you may find some last-minute discounts, there's no guarantee. Keep your travel plans flexible to maximize your chances of landing a bargain.
Is it cheaper to book a CWL to PWM flight and hotel package?
Securing a CWL to PWM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our impressive range of hotels and then add car rentals, activities and flights 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 Cardiff Intl. Airport (CWL) to Portland Intl. Jetport Airport (PWM)?
It's usually possible to cancel or reschedule your CWL to PWM 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 possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.