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Cheap flights from Illinois to Cardiff from £209

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CWL
6 Feb — 13 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Cardiff

Keep the following information in mind while searching for Illinois to Cardiff flight deals. Data was last updated 7 January 2026.

Round-trip from

£516

One-way from

£209
20/2-27/2
  • 20/2-27/2
  • 3 total stops
  • 41h 35m total
  • Illinois to Cardiff
Search Deals
25/1
  • 25/1
  • 3 total stops
  • 22h 35m total
  • Illinois to Cardiff
Search Deals

Find flight deals from Illinois to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Cardiff
Explore the most affordable flight options available from Illinois to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.

Tue 3/211:15ORD - CWL
2 stops16h 35mKLM
Tue 10/217:25CWL - ORD
1 stop26h 55mKLM
Deal found 4/1£583
Wed 18/216:25ORD - CWL
1 stop11h 25mKLM
Wed 25/217:25CWL - ORD
2 stops30h 28mKLM
Deal found 4/1£585
Mon 2/216:25ORD - CWL
1 stop11h 25mKLM
Mon 9/217:15CWL - ORD
2 stops29h 40mKLM
Deal found 5/1£587
Mon 26/116:25ORD - CWL
1 stop11h 25mKLM
Mon 2/217:15CWL - ORD
2 stops29h 40mKLM
Deal found 5/1£594
Sun 6/916:20ORD - CWL
1 stop10h 55mKLM
Mon 14/917:15CWL - ORD
1 stop27h 00mKLM
Deal found 4/1£628
Tue 8/907:00ORD - CWL
2 stops20h 15mDelta
Wed 16/909:45CWL - ORD
1 stop10h 45mDelta
Deal found 4/1£631
Sun 6/916:20ORD - CWL
1 stop10h 55mDelta
Wed 16/909:45CWL - ORD
2 stops17h 51mDelta
Deal found 4/1£635
Mon 7/907:00ORD - CWL
2 stops20h 15mDelta
Wed 16/909:45CWL - ORD
2 stops18h 21mDelta
Deal found 4/1£638
Sun 6/916:20ORD - CWL
1 stop10h 55mScandinavian Airlines
Mon 14/917:15CWL - ORD
2 stops29h 21mScandinavian Airlines
Deal found 4/1£654
Tue 8/913:30ORD - CWL
2 stops13h 45mScandinavian Airlines
Mon 14/917:15CWL - ORD
2 stops29h 21mScandinavian Airlines
Deal found 4/1£657
Mon 25/509:40MDW - CWL
1 stop18h 35mMultiple Airlines
Mon 8/611:35CWL - MDW
1 stop27h 10mMultiple Airlines
Deal found 6/1£669
Fri 20/213:26MDW - CWL
2 stops14h 24mKLM
Fri 27/217:15CWL - MDW
2 stops28h 59mKLM
Deal found 6/1£697

Cheapflights Fare Finder

 
Customise your flight search to find flights from Illinois 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 7 January 2026.
Use the filters below to find and compare flights from Illinois to Cardiff that are best for you.

Fly from

Illinois

Fly to

Cardiff

Route

Depart

Return

Price

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 3/2

11:15-09:50

2 stops16h 35m

Cardiff Wales

Tue 10/2

17:25-14:20

1 stop26h 55m

£583

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 2/2

16:25-09:50

1 stop11h 25m

Cardiff Wales

Mon 9/2

17:15-16:55

2 stops29h 40m

£587

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 26/1

16:25-09:50

1 stop11h 25m

Cardiff Wales

Mon 2/2

17:15-16:55

2 stops29h 40m

£594

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Mon 25/5

09:40-10:15

1 stop18h 35m

Cardiff Wales

Mon 8/6

11:35-08:45

1 stop27h 10m

£669

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Fri 20/2

13:26-09:50

2 stops14h 24m

Cardiff Wales

Fri 27/2

17:15-16:14

2 stops28h 59m

£697

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 7/6

08:55-10:15

2 stops19h 20m

Cardiff Wales

Wed 17/6

23:50-14:00

1 stop20h 10m

£723

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 7/6

21:00-22:00

1 stop19h 00m

Cardiff Wales

Thu 18/6

22:25-14:00

1 stop21h 35m

£799

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 8/6

21:00-22:50

1 stop19h 50m

Cardiff Wales

Tue 16/6

23:15-14:00

1 stop20h 45m

£799

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 9/6

21:00-23:25

1 stop20h 25m

Cardiff Wales

Sun 14/6

21:45-14:00

1 stop22h 15m

£807

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 9/6

21:00-23:25

1 stop20h 25m

Cardiff Wales

Sat 13/6

09:25-19:15

1 stop15h 50m

£813

Flights are sorted by cheapest return flights first.

Deals found on 4/1

Showing 1-10 of 15 results
1
2

Best time to book a flight from Illinois to Cardiff

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

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

  • How long is the flight from Illinois to Cardiff?

    Airlines like KLM and Delta fly from Illinois to Cardiff in about 16h 35m. The time it takes to get you to your destination can typically vary by up to 1h 40m. Airlines will cover a distance of 3831 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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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How does Cheapflights help users find flights from Illinois to Cardiff?

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

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

Need flexible booking options for your flight to Cardiff from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from Illinois to Cardiff on Cheapflights with our Price Alert feature and get notified when better prices are available.

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