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Cheap flights from Illinois to Cardiff from £375

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Cardiff departing on 29/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Illinois to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
17:25 - 09:50
ORD
-
CWL
11h 25m
1 stop
KLM Logo
17:15 - 17:10
CWL
-
ORD
28h 55m
2 stops
£585KLM
Mon, 9 Mar - Mon, 16 Mar
KLM Logo
14:10 - 09:50
ORD
-
CWL
14h 40m
2 stops
KLM Logo
17:15 - 17:10
CWL
-
ORD
28h 55m
2 stops
£588KLM
Mon, 9 Mar - Mon, 16 Mar
KLM Logo
16:50 - 09:15
ORD
-
CWL
10h 25m
1 stop
KLM Logo
17:15 - 14:15
CWL
-
ORD
27h 00m
1 stop
£589KLM
Mon, 30 Mar - Mon, 6 Apr
KLM Logo
14:10 - 09:15
ORD
-
CWL
13h 05m
2 stops
KLM Logo
17:15 - 14:15
CWL
-
ORD
27h 00m
1 stop
£592KLM
Mon, 30 Mar - Mon, 6 Apr
KLM Logo
17:25 - 09:50
ORD
-
CWL
11h 25m
1 stop
KLM Logo
10:20 - 15:20
CWL
-
ORD
34h 00m
1 stop
£614KLM
Sun, 8 Mar - Sat, 14 Mar
KLM Logo
14:10 - 09:15
ORD
-
CWL
13h 05m
2 stops
KLM Logo
09:45 - 22:16
CWL
-
ORD
18h 31m
2 stops
£636KLM
Mon, 30 Mar - Mon, 6 Apr
Virgin Atlantic Logo
17:25 - 09:50
ORD
-
CWL
11h 25m
1 stop
Virgin Atlantic Logo
17:30 - 15:20
CWL
-
ORD
26h 50m
1 stop
£655Virgin Atlantic
Sun, 8 Mar - Sun, 15 Mar
Delta Logo
13:37 - 09:50
ORD
-
CWL
15h 13m
2 stops
Delta Logo
09:45 - 22:16
CWL
-
ORD
18h 31m
2 stops
£667Delta
Mon, 23 Mar - Mon, 30 Mar
Multiple Airlines Logo
18:36 - 16:45
MDW
-
CWL
16h 09m
2 stops
Multiple Airlines Logo
09:45 - 21:45
CWL
-
MDW
18h 00m
2 stops
£1,513Multiple Airlines
Sat, 6 Jun - Sat, 13 Jun
Multiple Airlines Logo
14:05 - 09:50
MDW
-
CWL
14h 45m
2 stops
Multiple Airlines Logo
09:45 - 22:31
CWL
-
MDW
18h 46m
2 stops
£1,567Multiple Airlines
Mon, 23 Mar - Mon, 30 Mar

WestJet flights from Illinois to Cardiff

Our best WestJet deals on Illinois to Cardiff flight tickets
WestJet
6 Jun
ORD17:30Chicago O'Hare Intl
34h 45m
2 stops
CWL10:15Cardiff Wales
13 Jun
CWL11:35Cardiff Wales
35h 05m
2 stops
ORD16:40Chicago O'Hare Intl
£819
WestJet
6 Jun
ORD17:30Chicago O'Hare Intl
34h 45m
2 stops
CWL10:15Cardiff Wales
13 Jun
CWL11:35Cardiff Wales
35h 05m
2 stops
ORD16:40Chicago O'Hare Intl
£904
WestJet
19 Jun
ORD17:30Chicago O'Hare Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
27 Jun
CWL11:35Cardiff Wales
59h 05m
2 stops
ORD16:40Chicago O'Hare Intl
£1,023

KLM flights from Illinois to Cardiff

Our best KLM deals on Illinois to Cardiff flight tickets
KLM
9 Mar
ORD17:25Chicago O'Hare Intl
11h 25m
1 stop
CWL09:50Cardiff Wales
16 Mar
CWL17:15Cardiff Wales
28h 55m
2 stops
ORD17:10Chicago O'Hare Intl
£585
KLM
9 Mar
ORD14:10Chicago O'Hare Intl
14h 40m
2 stops
CWL09:50Cardiff Wales
16 Mar
CWL17:15Cardiff Wales
28h 55m
2 stops
ORD17:10Chicago O'Hare Intl
£588
KLM
30 Mar
ORD16:50Chicago O'Hare Intl
10h 25m
1 stop
CWL09:15Cardiff Wales
6 Apr
CWL17:15Cardiff Wales
27h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£589

momondo Fare Finder

 
Customise your flight search to find flights from Illinois to Cardiff 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, momondo users made 279,928 searches. Data last updated 10 February 2026.
Use the filters below to find and compare flights from Illinois to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 9/3

17:25-09:50

1 stop11h 25m

Cardiff Wales

Mon 16/3

17:15-17:10

2 stops28h 55m

£585

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 9/3

14:10-09:50

2 stops14h 40m

Cardiff Wales

Mon 16/3

17:15-17:10

2 stops28h 55m

£588

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 30/3

16:50-09:15

1 stop10h 25m

Cardiff Wales

Mon 6/4

17:15-14:15

1 stop27h 00m

£589

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 30/3

14:10-09:15

2 stops13h 05m

Cardiff Wales

Mon 6/4

17:15-14:15

1 stop27h 00m

£592

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 8/3

17:25-09:50

1 stop11h 25m

Cardiff Wales

Sat 14/3

10:20-15:20

1 stop34h 00m

£614

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 30/3

14:10-09:15

2 stops13h 05m

Cardiff Wales

Mon 6/4

09:45-22:16

2 stops18h 31m

£636

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 8/3

17:25-09:50

1 stop11h 25m

Cardiff Wales

Sun 15/3

17:30-15:20

1 stop26h 50m

£655

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 23/3

13:37-09:50

2 stops15h 13m

Cardiff Wales

Mon 30/3

09:45-22:16

2 stops18h 31m

£667

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Sat 6/6

18:36-16:45

2 stops16h 09m

Cardiff Wales

Sat 13/6

09:45-21:45

2 stops18h 00m

£1,513

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Mon 23/3

14:05-09:50

2 stops14h 45m

Cardiff Wales

Mon 30/3

09:45-22:31

2 stops18h 46m

£1,567

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
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See travel insights to Cardiff from

How to get the cheapest flight ticket from Illinois to Cardiff

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

What is the cheapest airline that flies from Illinois to Cardiff Wales?

Delta is the most popular carrier operating from Illinois to Cardiff Wales

Cheap Illinois to Cardiff flight deals and tips

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

Fastest flight time

10h 25m

Direct flights

None
The fastest flight from Illinois to Cardiff takes 10h 25m
There are no direct flights from Illinois to Cardiff. There are no popular flight routes from Illinois to Cardiff.
Search flight deals

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

    Prices for flights from Illinois to Cardiff Wales Airport are updated daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The required travel and health documents for your Cardiff Wales Airport 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 Cardiff Wales Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Cardiff. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Cardiff from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cardiff from Illinois.

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

Yes. momondo can track prices for Illinois to Cardiff 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.

An easier way to manage your Cardiff trip

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport