£374 Find Cheap Flights from Cardiff to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Cardiff to Illinois departing on 21/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Cardiff to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Cardiff to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Cardiff to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Cardiff to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Cardiff to Illinois

Tue, 28 Apr - Tue, 5 May
KLM Logo
17:15 - 14:30
CWL
-
ORD
27h 15m
1 stop
KLM Logo
16:20 - 09:15
ORD
-
CWL
10h 55m
1 stop
£650KLM
Tue, 14 Apr - Tue, 21 Apr
KLM Logo
17:15 - 14:30
CWL
-
ORD
27h 15m
1 stop
KLM Logo
16:20 - 16:45
ORD
-
CWL
18h 25m
1 stop
£651KLM
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
17:15 - 14:30
CWL
-
ORD
27h 15m
1 stop
Multiple Airlines Logo
19:09 - 16:45
ORD
-
CWL
15h 36m
2 stops
£653Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
KLM Logo
17:15 - 14:30
CWL
-
ORD
27h 15m
1 stop
KLM Logo
19:09 - 16:45
ORD
-
CWL
15h 36m
2 stops
£654KLM
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
09:45 - 20:40
CWL
-
ORD
16h 55m
2 stops
Multiple Airlines Logo
19:09 - 16:45
ORD
-
CWL
15h 36m
2 stops
£659Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
KLM Logo
09:45 - 21:57
CWL
-
ORD
18h 12m
2 stops
KLM Logo
19:09 - 16:45
ORD
-
CWL
15h 36m
2 stops
£661KLM
Wed, 29 Apr - Wed, 6 May
Delta Logo
09:45 - 22:28
CWL
-
MDW
18h 43m
2 stops
Delta Logo
09:29 - 09:15
MDW
-
CWL
17h 46m
2 stops
£674Delta
Thu, 30 Apr - Thu, 7 May
Air France Logo
09:45 - 20:40
CWL
-
ORD
16h 55m
2 stops
Air France Logo
16:20 - 16:45
ORD
-
CWL
18h 25m
1 stop
£687Air France
Fri, 1 May - Fri, 8 May
Virgin Atlantic Logo
09:45 - 17:58
CWL
-
MDW
38h 13m
2 stops
Virgin Atlantic Logo
19:13 - 09:15
MDW
-
CWL
32h 02m
2 stops
£734Virgin Atlantic
Sat, 2 May - Sat, 9 May
Delta Logo
09:45 - 22:28
CWL
-
MDW
18h 43m
2 stops
Delta Logo
18:36 - 16:45
MDW
-
CWL
16h 09m
2 stops
£802Delta
Booking Insights

KAYAK's insights & trends for Cardiff to Illinois flights

Get data-powered insights and trends into flights from Cardiff to Illinois to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Cardiff to Illinois?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from Cardiff to Illinois were found on KLM (£666) and Delta (£674).

Find deals

Good to know - Cheap tickets from Cardiff to Illinois

Cheapest flight£444
Flight from Cardiff to Chicago Midway Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Cardiff to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Cardiff to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Cardiff to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Cardiff to Illinois is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Cardiff to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Cardiff to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Cardiff to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Cardiff to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Cardiff to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Cardiff to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Cardiff to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1472 reviews
7.6Comfort
7.8Boarding
8.4Crew
7.1Entertainment
7.3Food
Airline reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

10.0 Excellentsmit, Mar 2026
BLR - AMS
Read more KLM reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

It was really nice journey i personally recommend klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

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

Information on your arrival and departure airports

Cardiff (CWL)