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Cheap flights from Cardiff to Illinois from $484

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Illinois departing on 8/30. 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 Cardiff to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:30 am - 2:00 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
12h 30m1 stop Dublin
Multiple Airlines Logo
9:00 pm - 9:20 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
18h 20m1 stop Dublin
$700Multiple Airlines
Sat, Sep 26 - Sat, Oct 3
Multiple Airlines Logo
7:30 am - 7:15 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
17h 45m1 stop Dublin
Multiple Airlines Logo
3:45 pm - 9:15 amORD  Chicago O'Hare Intl-CWL Cardiff Wales
35h 30m2 stops Dublin Amsterdam Schiphol
$816Multiple Airlines
Sat, Sep 26 - Sat, Oct 3
Multiple Airlines Logo
11:35 am - 7:48 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
14h 13m1 stop Toronto Pearson Intl
Multiple Airlines Logo
7:25 pm - 10:25 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 00m2 stops Reykjavik Keflavik Intl Dublin
$839Multiple Airlines
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
11:35 am - 7:48 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
14h 13m1 stop Toronto Pearson Intl
Multiple Airlines Logo
10:25 pm - 10:25 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
18h 00m3 stops Reykjavik Keflavik Intl Glasgow Intl Dublin
$863Multiple Airlines
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
1:35 pm - 7:15 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
35h 40m2 stops Malaga Dublin
Multiple Airlines Logo
9:00 pm - 9:45 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
18h 45m1 stop Dublin
$876Multiple Airlines
Mon, Oct 12 - Sun, Oct 18
Multiple Airlines Logo
1:35 pm - 4:10 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
32h 35m3 stops Malaga Oslo Gardermoen Kastrup Copenhagen
Multiple Airlines Logo
7:15 pm - 9:15 amORD  Chicago O'Hare Intl-CWL Cardiff Wales
32h 00m3 stops Kastrup Copenhagen Malaga Amsterdam Schiphol
$882Multiple Airlines
Mon, Oct 12 - Sun, Oct 18
Multiple Airlines Logo
1:35 pm - 4:10 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
32h 35m2 stops Malaga Kastrup Copenhagen
Multiple Airlines Logo
7:15 pm - 9:15 amORD  Chicago O'Hare Intl-CWL Cardiff Wales
32h 00m3 stops Kastrup Copenhagen Malaga Amsterdam Schiphol
$893Multiple Airlines
Mon, Oct 12 - Sun, Oct 18
Air France Logo
5:15 pm - 2:15 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
27h 00m1 stop Amsterdam Schiphol
Air France Logo
4:50 pm - 4:45 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
17h 55m1 stop Amsterdam Schiphol
$906Air France
Thu, Sep 10 - Wed, Sep 16
Air France Logo
5:15 pm - 2:15 pmCWL  Cardiff Wales-ORD Chicago O'Hare Intl
27h 00m1 stop Amsterdam Schiphol
Air France Logo
4:50 pm - 4:45 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
17h 55m1 stop Amsterdam Schiphol
$907Air France
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
11:35 am - 10:15 amCWL  Cardiff Wales-ORD Chicago O'Hare Intl
28h 40m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
7:25 pm - 10:25 pmORD  Chicago O'Hare Intl-CWL Cardiff Wales
21h 00m3 stops Reykjavik Keflavik Intl Glasgow Intl Dublin
$913Multiple Airlines
Thu, Sep 10 - Wed, Sep 16

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Air France flights from Cardiff to Illinois

Our best Air France deals on Cardiff to Illinois flight tickets
Air France
Sep 10
CWL5:15 pmCardiff Wales
27h 00m
1 stop
ORD2:15 pmChicago O'Hare Intl
Sep 16
ORD4:50 pmChicago O'Hare Intl
17h 55m
1 stop
CWL4:45 pmCardiff Wales
$906
Air France
Sep 10
CWL5:15 pmCardiff Wales
27h 00m
1 stop
ORD2:15 pmChicago O'Hare Intl
Sep 16
ORD4:50 pmChicago O'Hare Intl
17h 55m
1 stop
CWL4:45 pmCardiff Wales
$907
Air France
Oct 12
CWL5:15 pmCardiff Wales
27h 00m
1 stop
ORD2:15 pmChicago O'Hare Intl
Oct 18
ORD4:15 pmChicago O'Hare Intl
18h 30m
1 stop
CWL4:45 pmCardiff Wales
$931

KLM flights from Cardiff to Illinois

Our best KLM deals on Cardiff to Illinois flight tickets
KLM
Sep 10
CWL9:45 amCardiff Wales
17h 52m
2 stops
ORD9:37 pmChicago O'Hare Intl
Sep 16
ORD6:00 amChicago O'Hare Intl
21h 15m
2 stops
CWL9:15 amCardiff Wales
$937
KLM
Aug 15
CWL5:35 pmCardiff Wales
26h 40m
1 stop
ORD2:15 pmChicago O'Hare Intl
Aug 23
ORD4:20 pmChicago O'Hare Intl
18h 25m
1 stop
CWL4:45 pmCardiff Wales
$2,097
KLM
Aug 15
CWL9:50 amCardiff Wales
18h 46m
2 stops
MDW10:36 pmChicago Midway
Aug 23
MDW7:25 pmChicago Midway
15h 20m
2 stops
CWL4:45 pmCardiff Wales
$2,174

momondo Fare Finder

 
Customize your flight search to find flights from Cardiff to Illinois 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 832,500 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Cardiff to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Sat 9/26

7:30 am-2:00 pm

1 stop12h 30m

Chicago O'Hare Intl

Sat 10/3

9:00 pm-9:20 pm

1 stop18h 20m

$700

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Sat 9/26

7:30 am-7:15 pm

1 stop17h 45m

Chicago O'Hare Intl

Sat 10/3

3:45 pm-9:15 am

2 stops35h 30m

$816

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Thu 9/10

11:35 am-7:48 pm

1 stop14h 13m

Chicago O'Hare Intl

Wed 9/16

7:25 pm-10:25 pm

2 stops21h 00m

$839

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Thu 9/10

11:35 am-7:48 pm

1 stop14h 13m

Chicago O'Hare Intl

Wed 9/16

10:25 pm-10:25 pm

3 stops18h 00m

$863

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Mon 10/12

1:35 pm-7:15 pm

2 stops35h 40m

Chicago O'Hare Intl

Sun 10/18

9:00 pm-9:45 pm

1 stop18h 45m

$876

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Mon 10/12

1:35 pm-4:10 pm

3 stops32h 35m

Chicago O'Hare Intl

Sun 10/18

7:15 pm-9:15 am

3 stops32h 00m

$882

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Mon 10/12

1:35 pm-4:10 pm

2 stops32h 35m

Chicago O'Hare Intl

Sun 10/18

7:15 pm-9:15 am

3 stops32h 00m

$893

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Thu 9/10

5:15 pm-2:15 pm

1 stop27h 00m

Chicago O'Hare Intl

Wed 9/16

4:50 pm-4:45 pm

1 stop17h 55m

$906

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Thu 9/10

5:15 pm-2:15 pm

1 stop27h 00m

Chicago O'Hare Intl

Wed 9/16

4:50 pm-4:45 pm

1 stop17h 55m

$907

CardiffChicago

CWL Cardiff Wales - ORD Chicago O'Hare Intl

CWLORD

Cardiff Wales

Thu 9/10

11:35 am-10:15 am

2 stops28h 40m

Chicago O'Hare Intl

Wed 9/16

7:25 pm-10:25 pm

3 stops21h 00m

$913

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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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

12h 30m

Direct flights

None
The fastest flight from Cardiff to Illinois takes 12h 30m
There are no direct flights from Cardiff to Illinois. There are no popular flight routes from Cardiff to Illinois.
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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 were last updated today.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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 show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

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

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

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

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

momondo provides multiple filters to help you find the best flight to Illinois from Cardiff. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Illinois from Cardiff are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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