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Cheap flights from Cardiff to Illinois from £344

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Cardiff to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Illinois
Explore the most affordable flight options available from Cardiff to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Thu 11/1210:30CWL - ORD
1 stop13h 25mMultiple Airlines
Thu 18/1219:40ORD - CWL
1 stop20h 20mMultiple Airlines
Deal found 27/10£533
Sun 14/1217:30CWL - ORD
1 stop26h 50mKLM
Sun 28/1216:25ORD - CWL
1 stop11h 25mKLM
Deal found 26/10£709
Sun 14/1217:30CWL - ORD
1 stop26h 50mVirgin Atlantic
Sun 28/1207:05ORD - CWL
2 stops20h 45mVirgin Atlantic
Deal found 26/10£727
Thu 11/1210:20CWL - ORD
2 stops17h 19mVirgin Atlantic
Thu 18/1218:04ORD - CWL
2 stops33h 46mVirgin Atlantic
Deal found 27/10£737
Thu 11/1210:20CWL - MDW
2 stops37h 58mVirgin Atlantic
Thu 18/1212:45MDW - CWL
2 stops22h 00mVirgin Atlantic
Deal found 27/10£773
Sun 14/1210:20CWL - ORD
2 stops16h 15mDelta
Sun 28/1209:41ORD - CWL
2 stops18h 09mDelta
Deal found 26/10£800
Sun 14/1210:20CWL - MDW
2 stops19h 27mDelta
Sun 28/1209:29MDW - CWL
2 stops18h 21mDelta
Deal found 26/10£808
Sun 14/1220:45CWL - ORD
2 stops27h 10mMultiple Airlines
Sun 28/1208:19ORD - CWL
3 stops32h 46mMultiple Airlines
Deal found 26/10£1,069

Cheap flight deals from Cardiff to Illinois

Keep the following information in mind while searching for Cardiff to Illinois flight deals. Data was last updated 28 October 2025.

Round-trip from

£533

One-way from

£344
11/12-18/12
  • 11/12-18/12
  • 2 total stops
  • 33h 45m total
  • Cardiff to Illinois
Search Deals
7/11
  • 7/11
  • 3 total stops
  • 55h 30m 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 28 October 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

Thu 11/12

10:30-17:55

1 stop13h 25m

Chicago O'Hare Intl

Thu 18/12

19:40-22:00

1 stop20h 20m

£533

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 5/3

10:20-14:20

1 stop34h 00m

Chicago O'Hare Intl

Mon 9/3

10:10-09:50

2 stops42h 40m

£670

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 5/3

10:20-14:20

1 stop34h 00m

Chicago O'Hare Intl

Mon 9/3

10:40-09:50

2 stops18h 10m

£670

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 11/12

10:20-18:18

2 stops37h 58m

Chicago Midway

Thu 18/12

12:45-16:45

2 stops22h 00m

£773

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sun 14/12

10:20-23:47

2 stops19h 27m

Chicago Midway

Sun 28/12

09:29-09:50

2 stops18h 21m

£808

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 26/3

10:20-08:50

2 stops27h 30m

Chicago Midway

Mon 30/3

13:00-09:15

2 stops14h 15m

£860

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 26/3

10:20-18:34

2 stops37h 14m

Chicago Midway

Mon 30/3

13:00-16:45

2 stops21h 45m

£902

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Fri 7/11

22:25-23:55

3 stops55h 30m

£344

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Fri 7/11

22:25-12:45

3 stops44h 20m

£367

Flights are sorted by cheapest return flights first.

Deals found on 26/10

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 £153). Flying from Cardiff to Illinois in August is currently the most expensive (average of £757). 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 34h. Fly via Virgin Atlantic, Delta, or Air France 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 £153). Flying from Cardiff to Illinois in August is currently the most expensive (average of £757). 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

Browse thousands of different options on Cheapflights for your next trip

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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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