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$899+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Cardiff to Illinois

Best flights from Cardiff to Illinois
Discover carefully curated flight deals from Cardiff to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2410:20 amCWL - ORD
2 stops16h 45mKLM
Sat 1/314:25 pmORD - CWL
1 stop11h 20mKLM
Deal found 12/10$899
This TravelUp deal was found by Cheapflights users on 12/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2410:20 amCWL - MDW
2 stops38h 16mVirgin Atlantic
Sat 1/319:33 amMDW - CWL
2 stops18h 12mVirgin Atlantic
Deal found 12/10$900
This Mytrip deal was found by Cheapflights users on 12/10. 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.
Sat 1/248:05 pmCWL - ORD
2 stops24h 40mMultiple Airlines
Sat 1/315:15 amORD - CWL
3 stops33h 40mMultiple Airlines
Deal found 12/10$921

Find flight deals from Cardiff to Illinois

Keep the following information in mind while searching for Cardiff to Illinois flight deals. Data was last updated December 12, 2025.

Round-trip from

$899
(KLM)
From Cardiff Wales to Illinois
Search Deals

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 December 12, 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

Sat 1/24

10:20 am-9:05 pm

2 stops16h 45m

Chicago O'Hare Intl

Sat 1/31

4:25 pm-9:45 am

1 stop11h 20m

$899

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sat 1/24

10:20 am-6:36 pm

2 stops38h 16m

Chicago Midway

Sat 1/31

9:33 am-9:45 am

2 stops18h 12m

$900

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sat 1/24

8:05 pm-2:45 pm

2 stops24h 40m

Chicago O'Hare Intl

Sat 1/31

5:15 am-8:55 pm

3 stops33h 40m

$921

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 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, September is the cheapest month in which you can book a flight from Cardiff to Illinois (average of $204). Flying from Cardiff to Illinois in October is currently the most expensive (average of $1,250). 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 $899, KLM can have you in Illinois from Cardiff in 16h 45m. Cardiff and Illinois are separated by a distance of 3831 mi. When browsing for deals, the options you’ll see will be for both nonstop 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 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, September is the cheapest month in which you can book a flight from Cardiff to Illinois (average of $204). Flying from Cardiff to Illinois in October is currently the most expensive (average of $1,250). 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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