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Cheap flights from Cardiff to Illinois from £555

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
3 Sep — 10 Sep1
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 29 August 2025.

Round-trip from

£555
Virgin Atlantic
  • Virgin Atlantic
  • 12/10-19/10
  • 4 total stops
  • 69h 40m total
  • Cardiff to Illinois
Search Deals

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 29 August 2025.

Sun 12/1009:50CWL - ORD
2 stops38h 24mVirgin Atlantic
Sun 19/1019:59ORD - CWL
2 stops31h 16mVirgin Atlantic
Deal found 28/8£555
Sun 12/1017:15CWL - ORD
1 stop27h 25mKLM
Sun 19/1016:15ORD - CWL
1 stop18h 30mKLM
Deal found 28/8£580
Sun 12/1009:50CWL - MDW
2 stops38h 35mVirgin Atlantic
Sun 19/1013:08MDW - CWL
2 stops21h 37mVirgin Atlantic
Deal found 28/8£591
Sat 11/1009:00CWL - ORD
1 stop11h 00mMultiple Airlines
Sat 18/1011:12ORD - CWL
3 stops17h 23mMultiple Airlines
Deal found 27/8£685
Sat 11/1017:35CWL - ORD
1 stop26h 35mVirgin Atlantic
Sat 18/1016:15ORD - CWL
1 stop18h 30mVirgin Atlantic
Deal found 27/8£688
Sat 11/1009:45CWL - MDW
2 stops14h 40mDelta
Sat 18/1011:10MDW - CWL
2 stops16h 05mDelta
Deal found 27/8£699
Sun 12/1011:00CWL - ORD
2 stops34h 55mMultiple Airlines
Sun 19/1019:05ORD - CWL
3 stops32h 10mMultiple Airlines
Deal found 28/8£706
Mon 6/1009:50CWL - MDW
2 stops14h 35mKLM
Mon 13/1013:08MDW - CWL
2 stops14h 07mKLM
Deal found 28/8£810
Mon 6/1017:15CWL - ORD
1 stop26h 55mKLM
Mon 13/1016:40ORD - CWL
1 stop10h 35mKLM
Deal found 28/8£822
Mon 6/1009:50CWL - MDW
2 stops18h 24mDelta
Mon 13/1018:23MDW - CWL
2 stops16h 22mDelta
Deal found 27/8£959
Thu 30/1010:20CWL - MDW
2 stops28h 25mKLM
Fri 31/1018:35MDW - CWL
2 stops17h 20mKLM
Deal found 27/8£2,548

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 29 August 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 12/10

09:50-18:14

2 stops38h 24m

Chicago O'Hare Intl

Sun 19/10

19:59-09:15

2 stops31h 16m

£555

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sun 12/10

17:15-14:40

1 stop27h 25m

Chicago O'Hare Intl

Sun 19/10

16:15-16:45

1 stop18h 30m

£580

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sun 12/10

09:50-18:25

2 stops38h 35m

Chicago Midway

Sun 19/10

13:08-16:45

2 stops21h 37m

£591

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sat 11/10

09:00-14:00

1 stop11h 00m

Chicago O'Hare Intl

Sat 18/10

11:12-10:35

3 stops17h 23m

£685

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sat 11/10

17:35-14:10

1 stop26h 35m

Chicago O'Hare Intl

Sat 18/10

16:56-16:45

2 stops17h 49m

£688

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sat 11/10

09:45-18:25

2 stops14h 40m

Chicago Midway

Sat 18/10

11:10-09:15

2 stops16h 05m

£699

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sun 12/10

11:00-15:55

2 stops34h 55m

Chicago O'Hare Intl

Sun 19/10

19:05-09:15

3 stops32h 10m

£706

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

09:50-18:25

2 stops14h 35m

Chicago Midway

Mon 13/10

13:08-09:15

2 stops14h 07m

£810

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

17:15-14:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 13/10

16:40-09:15

1 stop10h 35m

£822

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

09:50-22:14

2 stops18h 24m

Chicago Midway

Mon 13/10

18:23-16:45

2 stops16h 22m

£959

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 11 results
1
2

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 29 August 2025.
Get a feel of what it's like to fly with KLM 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.
KLM
7.8
Good
1,383 reviews
Check prices

Overall

7.8

Entertainment

7.1

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Overall

7.8

Entertainment

7.1

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 14h 40m. Fly via Virgin Atlantic, KLM, or Delta to get the fastest option. The distance between Cardiff and Illinois is about 3833 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, 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

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Alternative routes for Cardiff to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£544Average£676FlexibilityNo 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!

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