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Cheap flights from Idaho to Cardiff from £699

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CWL
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Idaho to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from Idaho to Cardiff
Explore the most affordable flight options available from Idaho to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 March 2026.

Wed 6/515:44
BOI
-
CWL
2 stops18h 01m
Multiple Airlines
Wed 20/517:15
CWL
-
BOI
2 stops30h 54m
Multiple Airlines
Deal found 6/3£699
Tue 5/515:23
BOI
-
CWL
2 stops18h 22m
KLM
Mon 11/517:15
CWL
-
BOI
2 stops34h 19m
KLM
Deal found 9/3£736
Tue 5/506:00
BOI
-
CWL
3 stops20h 15m
Scandinavian Airlines
Mon 11/509:45
CWL
-
BOI
2 stops21h 01m
Scandinavian Airlines
Deal found 9/3£817

Find flight deals from Idaho to Cardiff

Keep the following information in mind while searching for Idaho to Cardiff flight deals. Data was last updated 10 March 2026.

Round-trip from

£699
KLM
  • KLM
  • 6/5-20/5
  • 4 total stops
  • 48h 55m total
  • Idaho to Cardiff
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Idaho 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 858,174 searches. Data last updated 10 March 2026.
Use the filters below to find and compare flights from Idaho to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Wed 6/5

15:44-16:45

2 stops18h 01m

Cardiff Wales

Wed 20/5

17:15-17:09

2 stops30h 54m

£699

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Tue 5/5

15:23-16:45

2 stops18h 22m

Cardiff Wales

Mon 11/5

17:15-20:34

2 stops34h 19m

£736
Fastest return journey

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Tue 5/5

06:00-09:15

3 stops20h 15m

Cardiff Wales

Mon 11/5

09:45-23:46

2 stops21h 01m

£817

Flights are sorted by cheapest return flights first.

Deals found on 6/3

Sorted by cheapest first

Best time to book a flight from Idaho to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Idaho with our price prediction graph.
Estimated return 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 Idaho to Cardiff
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 Idaho to Cardiff. 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 into for flights to Cardiff from Idaho?

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly into when you book flights from Idaho to Cardiff.

  • How long is the flight from Idaho to Cardiff?

    Departing from Idaho to Cardiff will take you 18h 22m. There are 4745 mi between Idaho and Cardiff.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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.

See more FAQs

Travelling to a place near Cardiff?

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

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Fly with Cheapflights

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How does Cheapflights help users find flights from Idaho to Cardiff?

Deals for Idaho to Cardiff flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Idaho to Cardiff?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Idaho to Cardiff for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Idaho to Cardiff with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Idaho to Cardiff, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Idaho to Cardiff become cheaper?

Yes! Start tracking prices for Idaho to Cardiff flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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