How do I get Price Alerts for flights from Cardiff to Illinois?

Search flight deals from Cardiff to Illinois . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Cardiff to Illinois with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Cardiff Wales Airport to Illinois?

Prices for flights from Cardiff Wales Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Cardiff Wales Airport to Illinois?

As of June 2026, there is 1 operator available to choose from for flights from Cardiff Wales Airport to Illinois.

How old do you have to be to fly from Cardiff Wales Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cardiff Wales Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£342 Cheap Flights from Cardiff to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from Cardiff to Illinois

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

23:15 - 09:17

CWL

MDW

40h 02m

3 stops

15:15 - 10:15

MDW

CWL

13h 00m

1 stop

£811Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

23:15 - 14:00

CWL

ORD

20h 45m

1 stop

15:45 - 22:25

ORD

CWL

24h 40m

1 stop

£843Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

11:35 - 19:52

CWL

ORD

14h 17m

1 stop

17:35 - 21:45

ORD

CWL

22h 10m

2 stops

£866Multiple Airlines

Thu, 6 Aug - Sun, 9 Aug

23:15 - 14:00

CWL

ORD

20h 45m

1 stop

19:25 - 22:25

ORD

CWL

21h 00m

2 stops

£873Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

11:35 - 19:52

CWL

ORD

14h 17m

1 stop

08:40 - 21:45

ORD

CWL

31h 05m

3 stops

£876Multiple Airlines

Thu, 6 Aug - Sun, 9 Aug

11:35 - 19:52

CWL

ORD

14h 17m

1 stop

15:45 - 10:15

ORD

CWL

12h 30m

1 stop

£891Multiple Airlines

Thu, 6 Aug - Fri, 14 Aug

23:15 - 12:39

CWL

MDW

43h 24m

3 stops

10:25 - 10:15

MDW

CWL

17h 50m

1 stop

£898Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

11:35 - 22:36

CWL

MDW

41h 01m

2 stops

19:25 - 10:15

MDW

CWL

56h 50m

2 stops

£1,063WestJet

Thu, 6 Aug - Fri, 14 Aug

09:45 - 22:36

CWL

MDW

18h 51m

2 stops

12:46 - 09:15

MDW

CWL

14h 29m

2 stops

£1,101KLM

Tue, 11 Aug - Fri, 21 Aug

09:50 - 22:36

CWL

MDW

18h 46m

2 stops

19:25 - 16:45

MDW

CWL

15h 20m

2 stops

£1,132KLM

Sat, 15 Aug - Sun, 23 Aug

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

WestJet flights from Cardiff to Illinois

Our best WestJet deals on Cardiff to Illinois flight tickets

WestJet

6 Aug

CWL11:35Cardiff Wales

41h 01m

2 stops

MDW22:36Chicago Midway

14 Aug

MDW19:25Chicago Midway

56h 50m

2 stops

CWL10:15Cardiff Wales

£1,063

WestJet

6 Aug

CWL11:35Cardiff Wales

31h 23m

2 stops

ORD12:58Chicago O'Hare Intl

9 Aug

ORD19:30Chicago O'Hare Intl

32h 45m

2 stops

CWL10:15Cardiff Wales

£1,087

WestJet

10 Aug

CWL11:35Cardiff Wales

35h 05m

2 stops

ORD16:40Chicago O'Hare Intl

17 Aug

ORD17:30Chicago O'Hare Intl

58h 45m

2 stops

CWL10:15Cardiff Wales

£1,367

KLM flights from Cardiff to Illinois

Our best KLM deals on Cardiff to Illinois flight tickets

KLM

12 Aug

CWL17:15Cardiff Wales

27h 00m

1 stop

ORD14:15Chicago O'Hare Intl

19 Aug

ORD16:50Chicago O'Hare Intl

10h 25m

1 stop

CWL09:15Cardiff Wales

£1,025

KLM

11 Aug

CWL17:15Cardiff Wales

27h 15m

1 stop

ORD14:30Chicago O'Hare Intl

21 Aug

ORD16:20Chicago O'Hare Intl

18h 45m

1 stop

CWL17:05Cardiff Wales

£1,045

KLM

15 Aug

CWL09:50Cardiff Wales

20h 07m

2 stops

ORD23:57Chicago O'Hare Intl

23 Aug

ORD16:20Chicago O'Hare Intl

10h 55m

1 stop

CWL09:15Cardiff Wales

£1,049

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Wed 12/8

23:15-09:17

3 stops40h 02m

Chicago Midway

Wed 19/8

15:15-10:15

1 stop13h 00m

£811

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 12/8

23:15-14:00

1 stop20h 45m

Chicago O'Hare Intl

Wed 19/8

15:45-22:25

1 stop24h 40m

£843

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 6/8

11:35-19:52

1 stop14h 17m

Chicago O'Hare Intl

Sun 9/8

17:35-21:45

2 stops22h 10m

£866

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Wed 12/8

23:15-14:00

1 stop20h 45m

Chicago O'Hare Intl

Wed 19/8

19:25-22:25

2 stops21h 00m

£872

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 6/8

11:35-19:52

1 stop14h 17m

Chicago O'Hare Intl

Sun 9/8

08:40-21:45

3 stops31h 05m

£876

Fastest return journey

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Thu 6/8

11:35-19:52

1 stop14h 17m

Chicago O'Hare Intl

Fri 14/8

15:45-10:15

1 stop12h 30m

£891

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Wed 12/8

23:15-12:39

3 stops43h 24m

Chicago Midway

Wed 19/8

10:25-10:15

1 stop17h 50m

£898

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Thu 6/8

11:35-22:36

2 stops41h 01m

Chicago Midway

Fri 14/8

19:25-10:15

2 stops56h 50m

£1,063

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Tue 11/8

09:45-22:36

2 stops18h 51m

Chicago Midway

Fri 21/8

12:46-09:15

2 stops14h 29m

£1,101

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sat 15/8

09:50-22:36

2 stops18h 46m

Chicago Midway

Sun 23/8

19:25-16:45

2 stops15h 20m

£1,132

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

Cheap Cardiff to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Illinois

Fastest flight time	14h 17m
Direct flights	None

The fastest flight from Cardiff to Illinois takes 14h 17m

There are no direct flights from Cardiff to Illinois. There are no popular flight routes from Cardiff to Illinois.

Search flight deals

Frequently asked questions about flying from Cardiff to Illinois

When did momondo last update prices for flights from Cardiff Wales Airport to Illinois?
Prices for flights from Cardiff Wales Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Cardiff Wales Airport to Illinois?
As of June 2026, there is 1 operator available to choose from for flights from Cardiff Wales Airport to Illinois.
How old do you have to be to fly from Cardiff Wales Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cardiff Wales Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Cardiff to Illinois

Compare and see reviews for airlines that fly from Cardiff to Illinois with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom £709	Free Cancellation	Rating 7.8 1,531 reviews		Search KLM flights

Frequently asked questions about flying from Cardiff to Illinois

How do I get Price Alerts for flights from Cardiff to Illinois?
Search flight deals from Cardiff to Illinois. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Cardiff to Illinois with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Illinois?

It is quick and easy to find Cardiff to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Cardiff to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Cardiff which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Cardiff to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Cardiff to Illinois.

I’m not ready to book a flight from Cardiff to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Cardiff to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.