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Cheap flights from Cardiff to Illinois from £385

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
25 Jan — 1 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Illinois

Enter your travel dates to find the best prices.

Best flights from Cardiff to Illinois
Discover carefully curated flight deals from Cardiff to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 December 2025.

Sun 8/210:15CWL - ORD
1 stop34h 05mMultiple Airlines
Sun 15/217:20ORD - CWL
1 stop17h 35mMultiple Airlines
Deal found 25/12£519
Sun 8/210:15CWL - ORD
1 stop34h 05mAir France
Sun 15/218:30ORD - CWL
2 stops16h 25mAir France
Deal found 25/12£522
Mon 9/210:20CWL - ORD
2 stops16h 45mDelta
Mon 16/210:11ORD - CWL
2 stops17h 39mDelta
Deal found 26/12£527
Sun 8/210:15CWL - ORD
2 stops17h 20mKLM
Sun 15/214:12ORD - CWL
2 stops13h 38mKLM
Deal found 25/12£527
Sun 8/210:15CWL - MDW
2 stops38h 21mVirgin Atlantic
Sun 15/211:45MDW - CWL
2 stops16h 05mVirgin Atlantic
Deal found 25/12£529
Mon 9/210:20CWL - ORD
2 stops17h 15mKLM
Mon 16/216:25ORD - CWL
1 stop11h 25mKLM
Deal found 26/12£527
Mon 9/217:15CWL - MDW
2 stops30h 14mVirgin Atlantic
Mon 16/209:50MDW - CWL
2 stops18h 00mVirgin Atlantic
Deal found 26/12£533
Mon 9/217:15CWL - ORD
3 stops30h 05mMultiple Airlines
Mon 16/212:50ORD - CWL
3 stops21h 15mMultiple Airlines
Deal found 26/12£1,030

Find flight deals from Cardiff to Illinois

Keep the following information in mind while searching for Cardiff to Illinois flight deals. Data was last updated 26 December 2025.

Round-trip from

£519
Air France
  • Air France
  • 8/2-15/2
  • 2 total stops
  • 51h 40m total
  • Cardiff to Illinois
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Illinois 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 26 December 2025.
Use the filters below to find and compare flights from Cardiff to Illinois that are best for you.

Fly from

Cardiff

Fly to

Illinois

Route

Depart

Return

Price

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sun 8/2

10:15-14:20

1 stop34h 05m

Chicago O'Hare Intl

Sun 15/2

17:20-16:55

1 stop17h 35m

£519

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sun 8/2

10:15-14:20

1 stop34h 05m

Chicago O'Hare Intl

Sun 15/2

18:30-16:55

2 stops16h 25m

£522

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 9/2

10:20-21:05

2 stops16h 45m

Chicago O'Hare Intl

Mon 16/2

10:11-09:50

2 stops17h 39m

£527

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sun 8/2

10:15-21:35

2 stops17h 20m

Chicago O'Hare Intl

Sun 15/2

14:12-09:50

2 stops13h 38m

£527

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 9/2

10:20-21:35

2 stops17h 15m

Chicago O'Hare Intl

Mon 16/2

16:25-09:50

1 stop11h 25m

£527

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sun 8/2

10:15-18:36

2 stops38h 21m

Chicago Midway

Sun 15/2

11:45-09:50

2 stops16h 05m

£529

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 9/2

17:15-17:29

2 stops30h 14m

Chicago Midway

Mon 16/2

09:50-09:50

2 stops18h 00m

£533

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 9/2

17:15-17:20

3 stops30h 05m

Chicago O'Hare Intl

Mon 16/2

12:50-16:05

3 stops21h 15m

£1,030

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 22/6

10:25-14:15

3 stops33h 50m

£385

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 22/6

11:35-16:43

2 stops35h 08m

£390

Flights are sorted by cheapest return flights first.

Deals found on 26/12

Best time to book a flight from Cardiff to Illinois

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

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

Currently, September is the cheapest month in which you can book a flight from Cardiff to Illinois (average of £151). Flying from Cardiff to Illinois in October is currently the most expensive (average of £926). 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Illinois. 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 Illinois?

    If you book a flight to Illinois from Cardiff, you will be flying from Cardiff Wales, which is the city’s only airport. Cardiff Wales (CWL) is located 9.1 mi from the center of Cardiff.

  • How long is the flight from Cardiff to Illinois?

    There are many flights that can get you from Cardiff to Illinois in 16h 45m. Fly via Air France, Delta, or KLM to get the fastest option. The distance between Cardiff and Illinois is about 3831 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Cardiff to Illinois (average of £151). Flying from Cardiff to Illinois in October is currently the most expensive (average of £926). 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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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Cardiff to Illinois 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 Cardiff to Illinois?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Cardiff to Illinois.

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

Certainly. Search results for flights to Illinois from Cardiff shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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