What is the cheapest month to book a flight from Illinois to Cardiff?

Currently, July is the cheapest month in which you can book a flight from Illinois to Cardiff (average of £169). Flying from Illinois to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

£402+ Flights from Illinois to Cardiff

Cheap flight deals from Illinois to Cardiff

Round-trip from	£482
One-way from	£402

22/8-29/8
2 total stops
22h 20m total
Illinois to Cardiff

Search Deals

Virgin Atlantic
21/8
1 total stop
18h 30m total
Illinois to Cardiff

Search Deals

Find flight deals from Illinois to Cardiff

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 8 July 2025.

Fri 22/815:45ORD - CWL

1 stop9h 45mMultiple Airlines

Fri 29/812:25CWL - ORD

1 stop12h 35mMultiple Airlines

Deal found 8/7£482

Tue 19/816:15ORD - CWL

1 stop18h 30mKLM

Tue 26/817:15CWL - ORD

1 stop27h 25mKLM

Deal found 7/7£608

Tue 19/816:15ORD - CWL

1 stop18h 30mVirgin Atlantic

Tue 26/817:15CWL - ORD

1 stop27h 25mVirgin Atlantic

Deal found 7/7£609

Tue 19/813:08MDW - CWL

2 stops14h 07mKLM

Tue 26/809:50CWL - MDW

2 stops14h 47mKLM

Deal found 7/7£612

Wed 20/809:10ORD - CWL

2 stops18h 05mDelta

Wed 27/809:50CWL - ORD

2 stops18h 03mDelta

Deal found 6/7£619

Wed 6/817:05MDW - CWL

2 stops17h 40mDelta

Wed 13/809:50CWL - MDW

2 stops17h 54mDelta

Deal found 7/7£660

Wed 3/1213:00MDW - CWL

2 stops21h 55mVirgin Atlantic

Sun 7/1217:25CWL - MDW

2 stops30h 42mVirgin Atlantic

Deal found 7/7£662

Tue 19/818:17MDW - CWL

3 stops16h 28mMultiple Airlines

Tue 26/820:20CWL - MDW

3 stops26h 04mMultiple Airlines

Deal found 7/7£1,071

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 8 July 2025.

Fri 22/815:45ORD - CWL

1 stop9h 45mMultiple Airlines

Fri 29/812:25CWL - ORD

1 stop12h 35mMultiple Airlines

Deal found 8/7£482

Tue 19/813:25ORD - CWL

2 stops13h 50mKLM

Tue 26/817:15CWL - ORD

1 stop27h 25mKLM

Deal found 7/7£608

Tue 19/816:20ORD - CWL

1 stop10h 55mVirgin Atlantic

Tue 26/817:15CWL - ORD

1 stop27h 25mVirgin Atlantic

Deal found 7/7£609

Wed 20/809:10ORD - CWL

2 stops18h 05mDelta

Wed 27/809:50CWL - ORD

2 stops18h 03mDelta

Deal found 6/7£619

Tue 19/813:08MDW - CWL

2 stops14h 07mKLM

Tue 26/809:50CWL - MDW

2 stops14h 47mKLM

Deal found 7/7£612

Wed 6/817:05MDW - CWL

2 stops17h 40mDelta

Wed 13/809:50CWL - MDW

2 stops17h 54mDelta

Deal found 7/7£660

Wed 3/1213:00MDW - CWL

2 stops21h 55mVirgin Atlantic

Sun 7/1217:25CWL - MDW

2 stops30h 42mVirgin Atlantic

Deal found 7/7£662

Tue 19/818:17MDW - CWL

3 stops16h 28mMultiple Airlines

Tue 26/820:20CWL - MDW

3 stops26h 04mMultiple Airlines

Deal found 7/7£1,071

Last-minute flights from Illinois to Cardiff
Discover last-minute flight deals from Illinois to Cardiff. Data last updated 8 July 2025 and is based on user searches.

Wed 6/817:05MDW - CWL

2 stops17h 40mDelta

Wed 13/809:50CWL - MDW

2 stops17h 54mDelta

Deal found 7/7£660

Tue 19/813:25ORD - CWL

2 stops13h 50mKLM

Tue 26/817:15CWL - ORD

1 stop27h 25mKLM

Deal found 7/7£608

Tue 19/816:20ORD - CWL

1 stop10h 55mVirgin Atlantic

Tue 26/817:15CWL - ORD

1 stop27h 25mVirgin Atlantic

Deal found 7/7£609

Tue 19/813:08MDW - CWL

2 stops14h 07mKLM

Tue 26/809:50CWL - MDW

2 stops14h 47mKLM

Deal found 7/7£612

Tue 19/818:17MDW - CWL

3 stops16h 28mMultiple Airlines

Tue 26/820:20CWL - MDW

3 stops26h 04mMultiple Airlines

Deal found 7/7£1,071

Wed 20/809:10ORD - CWL

2 stops18h 05mDelta

Wed 27/809:50CWL - ORD

2 stops18h 03mDelta

Deal found 6/7£619

Fri 22/815:45ORD - CWL

1 stop9h 45mMultiple Airlines

Fri 29/812:25CWL - ORD

1 stop12h 35mMultiple Airlines

Deal found 8/7£482

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 8 July 2025.

Thu 21/816:15ORD - CWL

1 stop18h 30mVirgin Atlantic

Deal found 7/7£402

Thu 21/819:00ORD - CWL

2 stops15h 45mDelta

Deal found 7/7£405

Thu 21/809:31MDW - CWL

2 stops17h 44mDelta

Deal found 7/7£418

Cheapflights Fare Finder

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

Fri 22/8

15:45-07:30

1 stop9h 45m

Cardiff Wales

Fri 29/8

12:25-19:00

1 stop12h 35m

£482

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 19/8

16:15-16:45

1 stop18h 30m

Cardiff Wales

Tue 26/8

17:15-14:40

1 stop27h 25m

£608

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Tue 19/8

16:20-09:15

1 stop10h 55m

Cardiff Wales

Tue 26/8

17:15-14:40

1 stop27h 25m

£609

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Tue 19/8

13:08-09:15

2 stops14h 07m

Cardiff Wales

Tue 26/8

09:50-18:37

2 stops14h 47m

£612

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Wed 20/8

09:10-09:15

2 stops18h 05m

Cardiff Wales

Wed 27/8

09:50-21:53

2 stops18h 03m

£619

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Wed 6/8

17:05-16:45

2 stops17h 40m

Cardiff Wales

Wed 13/8

09:50-21:44

2 stops17h 54m

£660

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Wed 3/12

13:00-16:55

2 stops21h 55m

Cardiff Wales

Sun 7/12

17:25-18:07

2 stops30h 42m

£662

ChicagoCardiff

MDW - CWL

MDWCWL

Chicago Midway

Tue 19/8

18:17-16:45

3 stops16h 28m

Cardiff Wales

Tue 26/8

20:20-16:24

3 stops26h 04m

£1,071

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Thu 21/8

16:15-16:45

1 stop18h 30m

£402

ChicagoCardiff

ORD - CWL

ORDCWL

Chicago O'Hare Intl

Thu 21/8

19:00-16:45

2 stops15h 45m

£405

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 11 results

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.

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

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

Reviews of airlines servicing Cardiff

Read through reviews of airlines operating flights from Illinois to Cardiff, such as Delta, KLM, andVirgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,963 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,368 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

653 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
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.
What is the cheapest month to book a flight from Illinois to Cardiff?
Currently, July is the cheapest month in which you can book a flight from Illinois to Cardiff (average of £169). Flying from Illinois to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Barry

Bridgend

Browse thousands of different options on Cheapflights for your next trip

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How does Cheapflights help users find flights from Illinois to Cardiff?

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.

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

Not ready to book yet? You can track prices for flights from Illinois to Cardiff on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Illinois to Cardiff from £402

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 21/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Cardiff

Keep the following information in mind while searching for Illinois to Cardiff flight deals. Data was last updated 8 July 2025.

Round-trip from

One-way from

Find 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 8 July 2025.

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 8 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Cardiff that are best for you.

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.

Cheapflights Insights

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

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated 8 July 2025.

Read through reviews of airlines operating flights from Illinois to Cardiff, such as Delta, KLM, andVirgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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?

What is the cheapest month to book a flight from Illinois to Cardiff?

Travelling to a place near Illinois?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Cardiff

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Cardiff?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 8 July 2025.