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Cheap flights from Illinois to Cardiff from £437

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 14/8. 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
1 adult, Economy, 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.
Multiple Airlines Logo
21:00 - 22:50
ORD
-
CWL
19h 50m
1 stop
Multiple Airlines Logo
23:15 - 14:00
CWL
-
ORD
20h 45m
1 stop
£553Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
21:00 - 22:50
ORD
-
CWL
19h 50m
1 stop
Multiple Airlines Logo
23:15 - 14:00
CWL
-
ORD
20h 45m
1 stop
£570Multiple Airlines
Tue, 28 Jul - Tue, 4 Aug
Multiple Airlines Logo
14:15 - 16:45
ORD
-
CWL
20h 30m
3 stops
Multiple Airlines Logo
23:15 - 20:29
CWL
-
ORD
27h 14m
2 stops
£581Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
16:55 - 21:50
ORD
-
CWL
23h 55m
1 stop
Multiple Airlines Logo
08:25 - 17:20
CWL
-
ORD
14h 55m
2 stops
£615Multiple Airlines
Mon, 26 Oct - Mon, 30 Nov
Multiple Airlines Logo
15:45 - 09:15
ORD
-
CWL
35h 30m
3 stops
Multiple Airlines Logo
21:45 - 14:55
CWL
-
ORD
23h 10m
2 stops
£659Multiple Airlines
Sun, 16 Aug - Sun, 23 Aug
Multiple Airlines Logo
15:40 - 09:15
ORD
-
CWL
35h 35m
3 stops
Multiple Airlines Logo
22:45 - 14:44
CWL
-
ORD
21h 59m
2 stops
£659Multiple Airlines
Fri, 14 Aug - Fri, 21 Aug
Multiple Airlines Logo
15:45 - 09:15
ORD
-
CWL
35h 30m
3 stops
Multiple Airlines Logo
21:45 - 14:55
CWL
-
ORD
23h 10m
2 stops
£663Multiple Airlines
Sun, 16 Aug - Sun, 23 Aug
Multiple Airlines Logo
15:45 - 09:15
ORD
-
CWL
35h 30m
3 stops
Multiple Airlines Logo
21:45 - 14:55
CWL
-
ORD
23h 10m
2 stops
£666Multiple Airlines
Sun, 16 Aug - Sun, 23 Aug
KLM Logo
12:46 - 09:15
MDW
-
CWL
14h 29m
2 stops
KLM Logo
09:45 - 22:36
CWL
-
MDW
18h 51m
2 stops
£848KLM
Fri, 14 Aug - Fri, 21 Aug
KLM Logo
12:46 - 09:15
MDW
-
CWL
14h 29m
2 stops
KLM Logo
09:45 - 22:36
CWL
-
MDW
18h 51m
2 stops
£848KLM
Fri, 14 Aug - Fri, 21 Aug

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KLM flights from Illinois to Cardiff

Our best KLM deals on Illinois to Cardiff flight tickets
KLM
14 Aug
ORD16:20Chicago O'Hare Intl
10h 55m
1 stop
CWL09:15Cardiff Wales
21 Aug
CWL09:45Cardiff Wales
20h 12m
2 stops
ORD23:57Chicago O'Hare Intl
£810
KLM
14 Aug
ORD16:20Chicago O'Hare Intl
10h 55m
1 stop
CWL09:15Cardiff Wales
21 Aug
CWL17:15Cardiff Wales
27h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£842
KLM
16 Aug
ORD12:29Chicago O'Hare Intl
14h 46m
2 stops
CWL09:15Cardiff Wales
23 Aug
CWL17:15Cardiff Wales
27h 15m
1 stop
ORD14:30Chicago O'Hare Intl
£843

Virgin Atlantic flights from Illinois to Cardiff

Our best Virgin Atlantic deals on Illinois to Cardiff flight tickets
Virgin Atlantic
16 Aug
ORD16:20Chicago O'Hare Intl
18h 25m
1 stop
CWL16:45Cardiff Wales
23 Aug
CWL17:15Cardiff Wales
27h 15m
1 stop
ORD14:30Chicago O'Hare Intl
£822
Virgin Atlantic
16 Aug
ORD16:20Chicago O'Hare Intl
10h 55m
1 stop
CWL09:15Cardiff Wales
23 Aug
CWL17:15Cardiff Wales
27h 15m
1 stop
ORD14:30Chicago O'Hare Intl
£826
Virgin Atlantic
16 Aug
ORD16:20Chicago O'Hare Intl
10h 55m
1 stop
CWL09:15Cardiff Wales
23 Aug
CWL17:15Cardiff Wales
27h 15m
1 stop
ORD14:30Chicago O'Hare Intl
£828

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 3 July 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

Cheapest return flight

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 11/8

21:00-22:50

1 stop19h 50m

Cardiff Wales

Tue 18/8

23:15-14:00

1 stop20h 45m

£553

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 28/7

21:00-22:50

1 stop19h 50m

Cardiff Wales

Tue 4/8

23:15-14:00

1 stop20h 45m

£570

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 11/8

14:15-16:45

3 stops20h 30m

Cardiff Wales

Tue 18/8

23:15-20:29

2 stops27h 14m

£581

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Mon 26/10

16:55-21:50

1 stop23h 55m

Cardiff Wales

Mon 30/11

08:25-17:20

2 stops14h 55m

£615

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 16/8

15:45-09:15

3 stops35h 30m

Cardiff Wales

Sun 23/8

21:45-14:55

2 stops23h 10m

£659

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Fri 14/8

15:40-09:15

3 stops35h 35m

Cardiff Wales

Fri 21/8

22:45-14:44

2 stops21h 59m

£659

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 16/8

15:45-09:15

3 stops35h 30m

Cardiff Wales

Sun 23/8

21:45-14:55

2 stops23h 10m

£663

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Sun 16/8

15:45-09:15

3 stops35h 30m

Cardiff Wales

Sun 23/8

21:45-14:55

2 stops23h 10m

£666
Fastest return journey

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Fri 14/8

12:46-09:15

2 stops14h 29m

Cardiff Wales

Fri 21/8

09:45-22:36

2 stops18h 51m

£848

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Fri 14/8

12:46-09:15

2 stops14h 29m

Cardiff Wales

Fri 21/8

09:45-22:36

2 stops18h 51m

£848

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 and WestJet are the most popular carriers 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

15h 20m

Direct flights

None
The fastest flight from Illinois to Cardiff takes 15h 20m
There are no direct flights from Illinois to Cardiff. There are no popular flight routes from Illinois to Cardiff.
Search flight deals

Frequently asked questions about flying from Illinois to Cardiff

  • 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