Which airlines fly to Illinois?

Aer Lingus, KLM and Virgin Atlantic are the top three most popular airlines that fly to Illinois from Cardiff according to our data. Aer Lingus is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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 August 2025, 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.

£435 Cheap Flights from Cardiff to Illinois in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

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

Find the cheapest flights from Cardiff to Illinois

Round-trip

Cheap return flights

09:00 - 14:00CWL-ORD

11h 00m1 stop

15:45 - 10:35ORD-CWL

12h 50m1 stop

£435

Find Deal

Sat, 20 Sep - Sat, 27 Sep

09:45 - 21:40CWL-ORD

17h 55m2 stops

10:15 - 09:15ORD-CWL

17h 00m2 stops

£599Delta

Find Deal

Sat, 20 Sep - Sat, 27 Sep

09:45 - 21:10CWL-MDW

17h 25m2 stops

19:15 - 16:45MDW-CWL

15h 30m2 stops

£611

Find Deal

Sat, 20 Sep - Sat, 27 Sep

17:15 - 14:10CWL-ORD

26h 55m1 stop

16:40 - 09:15ORD-CWL

10h 35m1 stop

£721KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

17:15 - 14:10CWL-ORD

26h 55m1 stop

16:40 - 09:15ORD-CWL

10h 35m1 stop

£746KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

09:50 - 18:25CWL-MDW

14h 35m2 stops

13:08 - 09:15MDW-CWL

14h 07m2 stops

£755KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

09:50 - 18:25CWL-MDW

14h 35m2 stops

13:08 - 09:15MDW-CWL

14h 07m2 stops

£758KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

12:00 - 11:50CWL-ORD

29h 50m2 stops

21:15 - 11:30ORD-CWL

32h 15m2 stops

£816British Airways

Find Deal

Mon, 6 Oct - Mon, 13 Oct

17:15 - 14:10CWL-ORD

26h 55m1 stop

13:25 - 09:15ORD-CWL

13h 50m2 stops

£826KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

17:15 - 14:10CWL-ORD

26h 55m1 stop

13:25 - 09:15ORD-CWL

13h 50m2 stops

£828KLM

Find Deal

Mon, 6 Oct - Mon, 13 Oct

KLM flights from Cardiff to Illinois

Our best KLM deals on Cardiff to Illinois flight tickets

KLM

6 Oct

CWL17:15Cardiff Wales

26h 55m

1 stop

ORD14:10Chicago O'Hare Intl

13 Oct

ORD16:40Chicago O'Hare Intl

10h 35m

1 stop

CWL09:15Cardiff Wales

£721

Find similar

KLM

6 Oct

CWL17:15Cardiff Wales

26h 55m

1 stop

ORD14:10Chicago O'Hare Intl

13 Oct

ORD16:40Chicago O'Hare Intl

10h 35m

1 stop

CWL09:15Cardiff Wales

£746

Find similar

KLM

6 Oct

CWL09:50Cardiff Wales

14h 35m

2 stops

MDW18:25Chicago Midway

13 Oct

MDW13:08Chicago Midway

14h 07m

2 stops

CWL09:15Cardiff Wales

£755

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sat 20/9

09:00-14:00

1 stop11h 00m

Chicago O'Hare Intl

Sat 27/9

15:45-10:35

1 stop12h 50m

£435

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Sat 20/9

09:45-21:40

2 stops17h 55m

Chicago O'Hare Intl

Sat 27/9

10:15-09:15

2 stops17h 00m

£599

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Sat 20/9

09:45-21:10

2 stops17h 25m

Chicago Midway

Sat 27/9

19:15-16:45

2 stops15h 30m

£611

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

17:15-14:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 13/10

16:40-09:15

1 stop10h 35m

£721

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

17:15-14:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 13/10

16:40-09:15

1 stop10h 35m

£746

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

09:50-18:25

2 stops14h 35m

Chicago Midway

Mon 13/10

13:08-09:15

2 stops14h 07m

£755

CardiffChicago

CWL - MDW

CWLMDW

Cardiff Wales

Mon 6/10

09:50-18:25

2 stops14h 35m

Chicago Midway

Mon 13/10

13:08-09:15

2 stops14h 07m

£758

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

12:00-11:50

2 stops29h 50m

Chicago O'Hare Intl

Mon 13/10

21:15-11:30

2 stops32h 15m

£816

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

17:15-14:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 13/10

13:25-09:15

2 stops13h 50m

£826

CardiffChicago

CWL - ORD

CWLORD

Cardiff Wales

Mon 6/10

17:15-14:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 13/10

13:25-09:15

2 stops13h 50m

£828

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Cardiff to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart on your flight to Illinois is on a Monday when prices can be found for as low as £610. This is often the case because there is less demand to fly during this day of the week. Flights from Cardiff to Illinois on a Tuesday will generally be more expensive and average around £904. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Cheap Cardiff to Illinois flight deals and tips

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

Best price found	£435
Fastest flight time	11h 00m
Direct flights	None
Airports in Illinois	2 airports

The best flight deal from Cardiff to Illinois found on momondo in the last 72 hours is £435

The fastest flight from Cardiff to Illinois takes 11h 00m

There are no direct flights from Cardiff to Illinois. Popular non-direct routes for this connection are Cardiff Wales Airport - Chicago O'Hare Intl Airport and Cardiff Wales Airport - Chicago Midway Airport.

There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

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 August 2025, 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 £549	Free Cancellation	Rating 7.8 1,382 reviews		Search KLM flights

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.