What is the cheapest month to book a flight from Boise to Cardiff?

Currently, February is the cheapest month in which you can book a flight from Boise to Cardiff (average of $773). Flying from Boise to Cardiff in June is currently the most expensive (average of $1,622). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Cardiff ranges from 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Cardiff when rainfall is around 2.0 in.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest time of day to fly from BOI to CWL?

When flying from Boise to Cardiff, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Boise to Cardiff that include hotel bookings?

Yes. In addition to deals on Boise to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Boise to Cardiff?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Cardiff.

Can I find deals for business class flights from Boise to Cardiff?

Yes. Cheapflights offers flight deals from Boise to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$991+ Flights from Boise to Cardiff

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Cheap flight deals from Boise to Cardiff

Round-trip from	$991 (Delta)

From Boise Air Term. Gowen Fld to Cardiff Wales

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Find flight deals from Boise to Cardiff

Cheapest flights from Boise to Cardiff
Explore the most affordable flight options available from Boise to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

dom. 8/245:30 amBOI - CWL

2 stops20h 45mDelta

dom. 8/319:50 amCWL - BOI

2 stops21h 06mDelta

Deal found 7/10

$991

vie. 11/2111:30 pmBOI - CWL

2 stops27h 20mKLM

vie. 11/285:25 pmCWL - BOI

2 stops36h 39mKLM

Deal found 7/9

$1,627

Best flights from Boise to Cardiff
Discover carefully curated flight deals from Boise to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 11, 2025.

dom. 8/245:30 amBOI - CWL

2 stops20h 45mDelta

dom. 8/319:50 amCWL - BOI

2 stops21h 06mDelta

Deal found 7/10

$991

vie. 11/2111:30 pmBOI - CWL

2 stops27h 20mKLM

vie. 11/285:25 pmCWL - BOI

2 stops36h 39mKLM

Deal found 7/9

$1,627

Last-minute flights from Boise to Cardiff
Discover last-minute flight deals from Boise to Cardiff. Data last updated julio 11, 2025 and is based on user searches.

dom. 8/245:30 amBOI - CWL

2 stops20h 45mDelta

dom. 8/319:50 amCWL - BOI

2 stops21h 06mDelta

Deal found 7/10

$991

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boise to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

dom. 8/24

5:30 am-9:15 am

2 stops20h 45m

Cardiff Wales

dom. 8/31

9:50 am-11:56 pm

2 stops21h 06m

$991

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Best time to book a flight from Boise to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Boise with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Cardiff

Read reviews from past customers who have flown Delta and KLM from Boise to Cardiff. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,952 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,952 reviews

Delta

8.0

Very good

7,952 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very good

7,952 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Can I find deals for flights from Boise to Cardiff that include hotel bookings?
Yes. In addition to deals on Boise to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boise to Cardiff?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Cardiff.
Can I find deals for business class flights from Boise to Cardiff?
Yes. Cheapflights offers flight deals from Boise to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Boise to Cardiff?
Currently, February is the cheapest month in which you can book a flight from Boise to Cardiff (average of $773). Flying from Boise to Cardiff in June is currently the most expensive (average of $1,622). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$991+ Cheap flights from Boise (BOI) to Cardiff (CWL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boise to Cardiff with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boise to Cardiff

Round-trip from

Find flight deals from Boise to Cardiff

Cheapest flights from Boise to CardiffExplore the most affordable flight options available from Boise to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Explore the most affordable flight options available from Boise to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boise to Cardiff that are best for you.

Best time to book a flight from Boise to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Boise with our price prediction graph.

Reviews of airlines servicing Cardiff

Read reviews from past customers who have flown Delta and KLM from Boise to Cardiff. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boise to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Boise to Cardiff that include hotel bookings?

How can I find direct flights from Boise to Cardiff?

Can I find deals for business class flights from Boise to Cardiff?

What is the cheapest month to book a flight from Boise to Cardiff?

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Alternative routes for Boise to Cardiff

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Travel Smart

Cheapest flights from Boise to Cardiff
Explore the most affordable flight options available from Boise to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.