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Cheap flights from Cardiff to Illinois from £506

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — ORD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Round-trip from

£506
KLM
  • KLM
  • 31/10-7/11
  • 2 total stops
  • 52h 30m 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 18 September 2025.

Fri 31/1010:20CWL - ORD
1 stop34h 00mKLM
Fri 7/1116:25ORD - CWL
1 stop18h 30mKLM
Deal found 16/9£506
Fri 31/1010:20CWL - ORD
2 stops27h 09mVirgin Atlantic
Fri 7/1116:25ORD - CWL
1 stop11h 25mVirgin Atlantic
Deal found 16/9£514
Mon 6/1009:50CWL - MDW
2 stops36h 19mMultiple Airlines
Mon 13/1013:08MDW - CWL
2 stops14h 07mMultiple Airlines
Deal found 16/9£568
Fri 31/1022:25CWL - ORD
2 stops24h 55mMultiple Airlines
Fri 7/1120:15ORD - CWL
3 stops31h 35mMultiple Airlines
Deal found 16/9£706
Mon 6/1017:15CWL - MDW
2 stops28h 54mKLM
Mon 13/1019:10MDW - CWL
2 stops15h 35mKLM
Deal found 17/9£773
Mon 6/1017:15CWL - ORD
1 stop26h 55mKLM
Mon 13/1013:25ORD - CWL
2 stops13h 50mKLM
Deal found 16/9£777

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 18 September 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 31/10

10:20-15:20

1 stop34h 00m

Chicago O'Hare Intl

Fri 7/11

16:25-16:55

1 stop18h 30m

£506

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 5/3

17:25-14:20

1 stop26h 55m

Chicago O'Hare Intl

Mon 9/3

13:35-16:55

2 stops22h 20m

£541

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 5/3

17:25-18:08

2 stops30h 43m

Chicago Midway

Mon 9/3

13:00-09:50

2 stops15h 50m

£547

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

09:50-16:09

2 stops36h 19m

Chicago Midway

Mon 13/10

13:08-09:15

2 stops14h 07m

£568

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Fri 31/10

10:20-09:45

2 stops28h 25m

Chicago Midway

Fri 7/11

06:00-09:50

2 stops21h 50m

£568

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Fri 31/10

22:25-18:20

2 stops24h 55m

Chicago O'Hare Intl

Fri 7/11

20:15-09:50

3 stops31h 35m

£706

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

17:15-16:09

2 stops28h 54m

Chicago Midway

Mon 13/10

19:10-16:45

2 stops15h 35m

£773

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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.

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 26h 55m. Fly via KLM or Virgin Atlantic to get the fastest option. The distance between Cardiff and Illinois is about 3831 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

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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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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