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$859+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CWL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Boise to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Cardiff (CWL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$859
(KLM)
From Boise Air Term. Gowen Fld to Cardiff Wales
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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 September 16, 2025.

This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:00 amBOI - CWL
2 stops24h 55mKLM
Wed 11/195:25 pmCWL - BOI
2 stops36h 00mKLM
Deal found 9/15$859
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:35 amBOI - CWL
2 stops28h 20mVirgin Atlantic
Sun 12/75:30 pmCWL - BOI
2 stops37h 40mVirgin Atlantic
Deal found 9/15$949

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Cardiff 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 September 16, 2025.
Use the filters below to find and compare flights from Boise to Cardiff that are best for you.

Fly from

Boise

Fly to

Cardiff

Route

Depart

Return

Price

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Mon 11/10

12:58 pm-4:55 pm

2 stops20h 57m

Cardiff Wales

Wed 11/19

5:25 pm-6:54 pm

2 stops32h 29m

$859

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Wed 12/3

5:35 am-4:55 pm

2 stops28h 20m

Cardiff Wales

Sun 12/7

5:30 pm-12:10 am

2 stops37h 40m

$949

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Wed 12/3

5:35 am-9:50 am

2 stops21h 15m

Cardiff Wales

Sun 12/7

10:20 am-12:10 am

2 stops44h 50m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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.

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.

  • How long is the flight from Boise to Cardiff?

    Departing from Boise to Cardiff will take you 20h 57m. The distance between Boise and Cardiff is about 4745 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

Traveling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry

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