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$690+ Cheap flights from Cardiff (CWL) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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 September 16, 2025.

Round-trip from

$690
(KLM)
From Cardiff Wales 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 September 16, 2025.

This KLM deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:20 amCWL - ORD
1 stop34h 00mKLM
Fri 11/74:25 pmORD - CWL
1 stop18h 30mKLM
Deal found 9/16$690
This Virgin Atlantic deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:20 amCWL - ORD
2 stops27h 09mVirgin Atlantic
Fri 11/74:25 pmORD - CWL
1 stop11h 25mVirgin Atlantic
Deal found 9/16$701
This Justfly.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/69:50 amCWL - MDW
2 stops36h 19mMultiple Airlines
Mon 10/131:08 pmMDW - CWL
2 stops14h 07mMultiple Airlines
Deal found 9/16$775
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:25 pmCWL - ORD
2 stops24h 55mMultiple Airlines
Fri 11/78:15 pmORD - CWL
3 stops31h 35mMultiple Airlines
Deal found 9/16$963
This KLM deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:15 pmCWL - ORD
1 stop26h 55mKLM
Mon 10/131:25 pmORD - CWL
2 stops13h 50mKLM
Deal found 9/15$971
This Justfly.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:15 pmCWL - MDW
2 stops31h 10mKLM
Mon 10/131:08 pmMDW - CWL
2 stops14h 07mKLM
Deal found 9/14$1,038

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 16, 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

Fri 10/31

10:20 am-3:20 pm

1 stop34h 00m

Chicago O'Hare Intl

Fri 11/7

4:25 pm-4:55 pm

1 stop18h 30m

$690

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 3/5

10:20 am-2:20 pm

1 stop34h 00m

Chicago O'Hare Intl

Mon 3/9

1:35 pm-4:55 pm

2 stops22h 20m

$738

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 3/5

10:20 am-2:20 pm

1 stop34h 00m

Chicago O'Hare Intl

Mon 3/9

10:35 am-4:55 pm

2 stops25h 20m

$738

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 3/5

10:20 am-8:50 am

2 stops28h 30m

Chicago Midway

Mon 3/9

1:00 pm-4:55 pm

2 stops22h 55m

$743

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 3/5

5:25 pm-9:46 pm

2 stops34h 21m

Chicago Midway

Mon 3/9

1:00 pm-9:50 am

2 stops39h 50m

$750

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 10/6

9:50 am-4:09 pm

2 stops36h 19m

Chicago Midway

Mon 10/13

1:08 pm-9:15 am

2 stops14h 07m

$775

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Fri 10/31

10:20 am-9:45 am

2 stops28h 25m

Chicago Midway

Fri 11/7

6:00 am-9:50 am

2 stops21h 50m

$775

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Fri 10/31

10:25 pm-6:20 pm

2 stops24h 55m

Chicago O'Hare Intl

Fri 11/7

8:15 pm-9:50 am

3 stops31h 35m

$963

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 10/6

5:15 pm-6:25 pm

2 stops31h 10m

Chicago Midway

Mon 10/13

1:08 pm-9:15 am

2 stops14h 07m

$1,038

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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 round-trip 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, August is the cheapest month in which you can book a flight from Cardiff to Illinois (average of $245). Flying from Cardiff to Illinois in March is currently the most expensive (average of $321). 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?

    Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to Illinois. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.

  • How long is the flight from Cardiff to Illinois?

    For as low as $690, KLM can have you in Illinois from Cardiff in 34h. Cardiff and Illinois are separated by a distance of 3831 mi.

  • 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 vacation 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, August is the cheapest month in which you can book a flight from Cardiff to Illinois (average of $245). Flying from Cardiff to Illinois in March is currently the most expensive (average of $321). 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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