$775 Cheap Flights from Cardiff (CWL) to Boise (BOI)

View $775 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Cardiff International Airport (CWL) to Boise Airport (BOI)

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Cheap Flights from Cardiff to Boise (CWL-BOI)

Prices were available within the past 7 days and start at $775 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Cardiff Intl. Airport (CWL) to Boise Airport (BOI) cost?
Lock in a cheap one-way flight from $775 or cheap return flight from Cardiff Intl. Airport (CWL) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Cardiff Intl. Airport (CWL) to Boise Airport (BOI)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between CWL and BOI. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Cardiff Intl. Airport (CWL) to Boise Airport (BOI)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from CWL to BOI. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Cardiff Intl. Airport (CWL) to Boise Airport (BOI)?
You'll need to book a flight with a layover if you're traveling from Cardiff Intl. Airport (CWL) to Boise Airport (BOI). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from CWL to BOI?
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 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 Boise Airport (BOI)?
To avoid potential delays on the Cardiff Intl. Airport (CWL) to Boise Airport (BOI) 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 Cardiff Intl. Airport (CWL) to Boise Airport (BOI) last-minute?
Booking your plane ticket from CWL to BOI just before your trip is generally more expensive. However, if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a CWL to BOI flight and hotel package?
You'll typically save money by booking a CWL to BOI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, consider 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 Boise Airport (BOI)?
Typically, you can cancel or modify your CWL to BOI flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Cardiff Intl.
Destination airport
Boise
Distance
4748 mi

Book with confidence

Book with confidence

Cardiff to Boise Flights

The cheapest times to fly from Cardiff to Boise

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

 

The best time to book a flight from Cardiff to Boise

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

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 Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $775 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 Boise 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 Boise 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.

 

Cardiff to Boise Flights

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*Available to One Key members.