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$935+ Cheap flights from Cardiff (CWL) to Idaho

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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOI
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheap flight deals from Cardiff to Idaho

Keep the following information in mind while searching for Cardiff to Idaho flight deals. Data was last updated septiembre 16, 2025.

Round-trip from

$935
(Delta)
From Cardiff Wales to Idaho
Search Deals

Find flight deals from Cardiff to Idaho

Cheapest flights from Cardiff to Idaho
Explore the most affordable flight options available from Cardiff to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2910:20 amCWL - BOI
2 stops32h 09mDelta
dom. 11/97:45 pmBOI - CWL
2 stops38h 10mDelta
Deal found 9/15$935
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/710:20 amCWL - BOI
2 stops44h 34mDelta
lun. 11/109:00 amBOI - CWL
2 stops24h 55mDelta
Deal found 9/13$974
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/110:20 amCWL - BOI
2 stops33h 09mDelta
dom. 11/911:35 pmBOI - CWL
2 stops27h 15mDelta
Deal found 9/15$976
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2810:20 amCWL - BOI
2 stops36h 53mDelta
mié. 11/121:49 pmBOI - CWL
2 stops20h 06mDelta
Deal found 9/15$981
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/110:20 amCWL - BOI
2 stops33h 09mDelta
sáb. 11/81:39 pmBOI - CWL
2 stops37h 11mDelta
Deal found 9/15$1,017
This KLM deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/710:20 amCWL - BOI
2 stops39h 31mKLM
lun. 11/107:45 amBOI - CWL
2 stops26h 10mKLM
Deal found 9/14$1,028

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cardiff to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
Use the filters below to find and compare flights from Cardiff to Idaho that are best for you.

Fly from

Cardiff

Fly to

Idaho

Route

Depart

Return

Price

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

dom. 11/2

10:20 am-6:51 pm

2 stops39h 31m

Boise Air Term. Gowen Fld

mié. 11/12

5:35 am-4:55 pm

2 stops28h 20m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

dom. 11/2

10:20 am-6:51 pm

2 stops39h 31m

Boise Air Term. Gowen Fld

jue. 11/13

9:00 am-9:50 am

2 stops41h 50m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

mié. 10/29

10:20 am-12:29 pm

2 stops32h 09m

Boise Air Term. Gowen Fld

dom. 11/9

7:45 pm-4:55 pm

2 stops38h 10m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

mié. 10/29

10:20 am-12:29 pm

2 stops32h 09m

Boise Air Term. Gowen Fld

lun. 11/10

1:49 pm-4:55 pm

2 stops20h 06m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

dom. 11/2

10:20 am-6:51 pm

2 stops39h 31m

Boise Air Term. Gowen Fld

dom. 11/9

11:35 pm-4:55 pm

2 stops34h 20m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

mié. 10/29

10:20 am-12:29 pm

2 stops32h 09m

Boise Air Term. Gowen Fld

mié. 11/12

7:30 am-4:55 pm

2 stops26h 25m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

dom. 11/2

10:20 am-8:16 pm

2 stops40h 56m

Boise Air Term. Gowen Fld

lun. 11/10

5:58 pm-4:55 pm

2 stops39h 57m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

mié. 10/29

10:20 am-12:29 pm

2 stops32h 09m

Boise Air Term. Gowen Fld

jue. 11/13

5:17 am-9:50 am

2 stops45h 33m

$935

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

vie. 11/7

10:20 am-11:54 pm

2 stops44h 34m

Boise Air Term. Gowen Fld

lun. 11/10

9:00 am-4:55 pm

2 stops24h 55m

$974

CardiffBoise

CWL - BOI

CWLBOI

Cardiff Wales

sáb. 11/1

10:20 am-1:29 pm

2 stops33h 09m

Boise Air Term. Gowen Fld

jue. 11/13

1:49 pm-9:50 am

2 stops37h 01m

$976

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 12 results
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Best time to book a flight from Cardiff to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Cardiff 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.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Idaho
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly from for flights from Cardiff to Idaho?

    For a flight from Cardiff to Idaho, you will be flying from Cardiff Wales. Cardiff Wales (CWL) is just 9.1 mi from the center of the city.

  • How long is the flight from Cardiff to Idaho?

    There are many flights that can get you from Cardiff to Idaho in 39h 31m. Fly via Delta to get the fastest option. The distance between Cardiff and Idaho is about 4745 mi.

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

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

  • How can I find direct flights from Cardiff to Idaho?

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

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

    Yes. Cheapflights offers flight deals from Cardiff to Idaho 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 Cardiff to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Cardiff to Idaho (average of $314). Flying from Cardiff to Idaho in June is currently the most expensive (average of $398). 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.

See more FAQs

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