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Cheap flights from Illinois to Cardiff from £395

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 21/9. 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

Find the cheapest flights from Illinois to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:10 - 07:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
29h 40m1 stop Dublin
Multiple Airlines Logo
08:15 - 17:20CWL  Cardiff Wales-ORD Chicago O'Hare Intl
15h 05m2 stops Dublin Reykjavik Keflavik Intl
£621Multiple Airlines
Thu, 5 Nov - Sat, 14 Nov
Multiple Airlines Logo
15:55 - 07:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
Multiple Airlines Logo
13:25 - 17:20CWL  Cardiff Wales-ORD Chicago O'Hare Intl
33h 55m2 stops Dublin Reykjavik Keflavik Intl
£646Multiple Airlines
Fri, 27 Nov - Thu, 3 Dec
Multiple Airlines Logo
20:10 - 07:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
29h 40m1 stop Dublin
Multiple Airlines Logo
08:15 - 18:25CWL  Cardiff Wales-ORD Chicago O'Hare Intl
16h 10m1 stop Dublin
£711Multiple Airlines
Thu, 5 Nov - Sat, 14 Nov
Multiple Airlines Logo
21:00 - 21:45ORD  Chicago O'Hare Intl-CWL Cardiff Wales
18h 45m1 stop Dublin
Multiple Airlines Logo
14:45 - 19:15CWL  Cardiff Wales-ORD Chicago O'Hare Intl
34h 30m2 stops Malaga Dublin
£738Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
Multiple Airlines Logo
21:00 - 21:45ORD  Chicago O'Hare Intl-CWL Cardiff Wales
18h 45m1 stop Dublin
Multiple Airlines Logo
14:45 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
29h 15m2 stops Malaga Dublin
£747Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
Multiple Airlines Logo
15:45 - 21:45ORD  Chicago O'Hare Intl-CWL Cardiff Wales
24h 00m1 stop Dublin
Multiple Airlines Logo
21:45 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
22h 15m1 stop Dublin
£748Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
Multiple Airlines Logo
19:25 - 22:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 25m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
22:10 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
21h 50m1 stop Dublin
£765Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
19:25 - 22:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 25m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
22:10 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
21h 50m1 stop Dublin
£768Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
19:25 - 22:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 25m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
22:10 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
21h 50m1 stop Dublin
£768Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
19:25 - 22:50ORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 25m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
22:10 - 14:00CWL  Cardiff Wales-ORD Chicago O'Hare Intl
21h 50m1 stop Dublin
£770Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct

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Delta flights from Illinois to Cardiff

Our best Delta deals on Illinois to Cardiff flight tickets
Delta
27 Nov
ORD10:06Chicago O'Hare Intl
17h 44m
2 stops
CWL09:50Cardiff Wales
2 Dec
CWL10:20Cardiff Wales
34h 05m
1 stop
ORD14:25Chicago O'Hare Intl
£796
Delta
27 Nov
ORD07:00Chicago O'Hare Intl
20h 50m
2 stops
CWL09:50Cardiff Wales
3 Dec
CWL10:20Cardiff Wales
19h 39m
2 stops
ORD23:59Chicago O'Hare Intl
£804
Delta
30 Sept
ORD10:25Chicago O'Hare Intl
16h 50m
2 stops
CWL09:15Cardiff Wales
7 Oct
CWL09:45Cardiff Wales
16h 53m
2 stops
ORD20:38Chicago O'Hare Intl
£807

Virgin Atlantic flights from Illinois to Cardiff

Our best Virgin Atlantic deals on Illinois to Cardiff flight tickets
Virgin Atlantic
30 Sept
ORD16:50Chicago O'Hare Intl
17h 55m
1 stop
CWL16:45Cardiff Wales
7 Oct
CWL17:15Cardiff Wales
27h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£788
Virgin Atlantic
30 Sept
ORD16:50Chicago O'Hare Intl
17h 55m
1 stop
CWL16:45Cardiff Wales
7 Oct
CWL17:15Cardiff Wales
27h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£800
Virgin Atlantic
12 Sept
ORD16:15Chicago O'Hare Intl
11h 00m
1 stop
CWL09:15Cardiff Wales
18 Sept
CWL17:15Cardiff Wales
27h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£827

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 17 August 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 Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Thu 5/11

20:10-07:50

1 stop29h 40m

Cardiff Wales

Sat 14/11

08:15-17:20

2 stops15h 05m

£620

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Fri 27/11

15:55-07:50

1 stop9h 55m

Cardiff Wales

Thu 3/12

13:25-17:20

2 stops33h 55m

£646

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Thu 5/11

20:10-07:50

1 stop29h 40m

Cardiff Wales

Sat 14/11

08:15-18:25

1 stop16h 10m

£711

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Sun 27/9

21:00-21:45

1 stop18h 45m

Cardiff Wales

Sun 4/10

14:45-19:15

2 stops34h 30m

£738

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Sun 27/9

21:00-21:45

1 stop18h 45m

Cardiff Wales

Sun 4/10

14:45-14:00

2 stops29h 15m

£747

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Sun 27/9

15:45-21:45

1 stop24h 00m

Cardiff Wales

Sun 4/10

21:45-14:00

1 stop22h 15m

£748
Fastest return journey

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Mon 28/9

19:25-22:50

2 stops21h 25m

Cardiff Wales

Mon 5/10

22:10-14:00

1 stop21h 50m

£765

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Mon 28/9

19:25-22:50

2 stops21h 25m

Cardiff Wales

Mon 5/10

22:10-14:00

1 stop21h 50m

£768

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Mon 28/9

19:25-22:50

2 stops21h 25m

Cardiff Wales

Mon 5/10

22:10-14:00

1 stop21h 50m

£768

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Mon 28/9

19:25-22:50

2 stops21h 25m

Cardiff Wales

Mon 5/10

22:10-14:00

1 stop21h 50m

£770

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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 and KLM 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

11h 00m

Direct flights

None
The fastest flight from Illinois to Cardiff takes 11h 00m
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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport