How long is the flight from Illinois to Cardiff?

Airlines like Delta and KLM fly from Illinois to Cardiff in about 15h 44m. The time it takes to get you to your destination can typically vary by up to 2h. Airlines will cover a distance of 3833 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from IL to CWL?

When flying from Illinois to Cardiff, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Cardiff from Illinois?

Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly into when you book flights from Illinois to Cardiff.

Can I find deals for flights from Illinois to Cardiff that include hotel bookings?

Yes. In addition to deals on Illinois to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Illinois to Cardiff?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Cardiff.

Can I find deals for business class flights from Illinois to Cardiff?

Yes. Cheapflights offers flight deals from Illinois to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£393+ Cheap Flights from Illinois to Cardiff

Cheap flight deals from Illinois to Cardiff

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Illinois to Cardiff
Explore the most affordable flight options available from Illinois to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Fri 27/1115:55 -

1 stop9h 55m

Thu 3/1213:25 -

2 stops33h 55m

Deal found 16/8£642

Wed 14/1015:45 -

1 stop24h 40m

Wed 21/1023:50 -

2 stops24h 25m

Deal found 18/8£677

Thu 8/1021:00 -

1 stop19h 20m

Mon 19/1013:35 -

2 stops35h 40m

Deal found 19/8£726

Wed 30/916:50 -

1 stop17h 55m

Wed 7/1017:15 -

2 stops32h 23m

Deal found 16/8£742

Fri 27/1110:06 -

2 stops17h 44m

Wed 2/1210:20 -

1 stop34h 05m

Deal found 16/8£791

Wed 30/919:01 -

2 stops15h 44m

Wed 7/1009:45 -

2 stops18h 48m

Deal found 16/8£797

Wed 30/916:50 -

1 stop17h 55m

Wed 7/1009:45 -

2 stops20h 07m

Deal found 16/8£797

Wed 30/919:01 -

2 stops15h 44m

Wed 7/1009:45 -

2 stops18h 48m

Deal found 16/8£859

Fri 21/813:25 -

2 stops13h 50m

Mon 24/809:45 -

2 stops18h 51m

Deal found 17/8£989

Fri 11/911:35 -

2 stops15h 40m

Mon 14/909:45 -

2 stops18h 59m

Deal found 16/8£1,103

Find flight deals from Illinois to Cardiff

Round-trip from	£642
One-way from	£393

27/11-3/12
3 total stops
43h 50m total
Illinois to Cardiff

Search Deals

Delta
21/9
1 total stop
10h 25m total
Illinois to Cardiff

Search Deals

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

Wed 14/10

15:45-22:25

1 stop24h 40m

Cardiff Wales

Wed 21/10

23:50-18:15

2 stops24h 25m

£677

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Thu 8/10

21:00-22:20

1 stop19h 20m

Cardiff Wales

Mon 19/10

13:35-19:15

2 stops35h 40m

£726

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Fri 27/11

10:06-09:50

2 stops17h 44m

Cardiff Wales

Wed 2/12

10:20-14:25

1 stop34h 05m

£791

ChicagoCardiff

MDW Chicago Midway - CWL Cardiff Wales

MDWCWL

Chicago Midway

Wed 30/9

19:01-16:45

2 stops15h 44m

Cardiff Wales

Wed 7/10

09:45-22:33

2 stops18h 48m

£797

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Wed 30/9

10:25-09:15

2 stops16h 50m

Cardiff Wales

Wed 7/10

09:45-20:38

2 stops16h 53m

£801

Fastest return journey

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Mon 21/9

16:50-16:45

1 stop17h 55m

Cardiff Wales

Mon 28/9

09:45-14:30

1 stop10h 45m

£832

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Fri 2/10

16:15-09:15

1 stop11h 00m

Cardiff Wales

Wed 7/10

17:15-14:15

1 stop27h 00m

£834

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Fri 2/10

16:15-17:05

1 stop18h 50m

Cardiff Wales

Tue 6/10

09:45-17:20

2 stops37h 35m

£834

ChicagoCardiff

ORD Chicago O'Hare Intl - CWL Cardiff Wales

ORDCWL

Chicago O'Hare Intl

Fri 27/11

11:29-09:50

2 stops16h 21m

Cardiff Wales

Tue 1/12

17:30-16:24

2 stops28h 54m

£837

ChicagoCardiff

MDW Chicago Midway - CWL Cardiff Wales

MDWCWL

Chicago Midway

Wed 30/9

19:01-16:45

2 stops15h 44m

Cardiff Wales

Wed 7/10

09:45-22:33

2 stops18h 48m

£859

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 17 resultsSorted by cheapest first

Best time to book a flight from Illinois to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Illinois with our price prediction graph.

ORD-CWL

MDW-CWL

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Cardiff

USIL-CWL

ORD-CWL

MDW-CWL

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Cardiff from Illinois?
Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly into when you book flights from Illinois to Cardiff.
How long is the flight from Illinois to Cardiff?
Airlines like Delta and KLM fly from Illinois to Cardiff in about 15h 44m. The time it takes to get you to your destination can typically vary by up to 2h. Airlines will cover a distance of 3833 mi. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Illinois to Cardiff that include hotel bookings?
Yes. In addition to deals on Illinois to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Illinois to Cardiff?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Cardiff.
Can I find deals for business class flights from Illinois to Cardiff?
Yes. Cheapflights offers flight deals from Illinois to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Illinois to Cardiff. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Cardiff?

Cheapflights helps you find that perfect flight to Cardiff from Illinois by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Illinois to Cardiff with no change fees?

Need flexible booking options for your flight to Cardiff from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Cheap flights from Illinois to Cardiff from £393

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Cardiff

Cheapest flights from Illinois to CardiffExplore the most affordable flight options available from Illinois to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from Illinois to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Illinois to CardiffDiscover carefully curated flight deals from Illinois to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Illinois to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Illinois to CardiffDiscover last-minute flight deals from Illinois to Cardiff. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Illinois to Cardiff. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Illinois to CardiffSearch for one-way flight options from Illinois to Cardiff. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Illinois to Cardiff. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

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Best time to book a flight from Illinois to Cardiff

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Related info for your journey

What airport do you fly into for flights to Cardiff from Illinois?

How long is the flight from Illinois to Cardiff?

Can I find deals for flights from Illinois to Cardiff that include hotel bookings?

How can I find direct flights from Illinois to Cardiff?

Can I find deals for business class flights from Illinois to Cardiff?

Travelling to a place near Cardiff?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Cardiff

Explore flights to Cardiff departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 August 2026.

Complete your trip

Complete your trip to Cardiff by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Wales

Book a non-stop flight to one of these other cities located in Wales.

Search flights from Illinois to Cardiff by cabin class

Find flights from Illinois to Cardiff, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Illinois and Cardiff flights

Browse other Illinois and Cardiff flight options. Last updated on 21 August 2026.

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Can Cheapflights notify me if prices for flights from Illinois to Cardiff become cheaper?

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Cheapest flights from Illinois to Cardiff
Explore the most affordable flight options available from Illinois to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Illinois to Cardiff
Discover carefully curated flight deals from Illinois to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Illinois to Cardiff
Discover last-minute flight deals from Illinois to Cardiff. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Illinois to Cardiff
Search for one-way flight options from Illinois to Cardiff. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.