Find flights
When to book
Airlines
FAQs

Cheap flights from Cardiff to Illinois from £445

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
9 Jul — 16 Jul1
1 adult

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 4 July 2025.

Round-trip from

£542

One-way from

£445
KLM
  • KLM
  • 8/10-13/10
  • 4 total stops
  • 29h 01m total
  • Cardiff to Illinois
10/7
  • 10/7
  • 2 total stops
  • 38h 15m total
  • Cardiff to Illinois

Find flight deals from Cardiff to Illinois

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 4 July 2025.

Wed 8/1009:50CWL - MDW
2 stops14h 46mKLM
Mon 13/1013:00MDW - CWL
2 stops14h 15mKLM
Deal found 3/7£542
Wed 8/1009:50CWL - ORD
2 stops18h 12mDelta
Mon 13/1010:35ORD - CWL
2 stops16h 40mDelta
Deal found 3/7£542
Wed 8/1009:50CWL - ORD
2 stops17h 56mMultiple Airlines
Mon 13/1016:50ORD - CWL
1 stop10h 25mMultiple Airlines
Deal found 1/7£550
Wed 8/1009:50CWL - ORD
2 stops18h 12mKLM
Mon 13/1016:40ORD - CWL
1 stop18h 05mKLM
Deal found 2/7£589
Mon 18/809:50CWL - MDW
2 stops17h 54mDelta
Mon 25/813:08MDW - CWL
2 stops14h 07mDelta
Deal found 3/7£602
Wed 8/1009:50CWL - ORD
1 stop10h 50mVirgin Atlantic
Mon 13/1016:50ORD - CWL
1 stop10h 25mVirgin Atlantic
Deal found 3/7£676
Wed 9/709:50CWL - MDW
2 stops14h 50mAir France
Wed 16/713:09MDW - CWL
2 stops21h 36mAir France
Deal found 3/7£2,580

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 4 July 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 - MDW

CWLMDW

Cardiff Wales

Wed 8/10

09:50-18:36

2 stops14h 46m

Chicago Midway

Mon 13/10

13:00-09:15

2 stops14h 15m

£542

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 8/10

09:50-22:02

2 stops18h 12m

Chicago O'Hare Intl

Mon 13/10

10:35-09:15

2 stops16h 40m

£542

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 8/10

09:50-21:46

2 stops17h 56m

Chicago O'Hare Intl

Mon 13/10

16:50-09:15

1 stop10h 25m

£550

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 8/10

09:50-22:02

2 stops18h 12m

Chicago O'Hare Intl

Mon 13/10

16:40-16:45

1 stop18h 05m

£589

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 8/10

09:50-14:40

1 stop10h 50m

Chicago O'Hare Intl

Mon 13/10

16:50-09:15

1 stop10h 25m

£676

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 10/7

07:55-16:10

2 stops38h 15m

£445

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 10/7

07:55-13:06

3 stops35h 11m

£546

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 9/7

09:50-14:40

1 stop10h 50m

£1,276

Flights are sorted by cheapest return flights first.

Deals found on 1/7

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, January is the cheapest month in which you can book a flight from Cardiff to Illinois (average of £595). Flying from Cardiff to Illinois in July is currently the most expensive (average of £843). 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.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 4 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andVirgin Atlantic from Cardiff to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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, January is the cheapest month in which you can book a flight from Cardiff to Illinois (average of £595). Flying from Cardiff to Illinois in July is currently the most expensive (average of £843). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Cardiff to Illinois

Discover the top airline that operate flights from Cardiff to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£539Average£756FlexibilityNo cancel feeOn-time75%
Search KLM flights

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.