£472 Find Cheap Flights from Leeds to Illinois – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Leeds to Illinois departing on 15/9. 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 Leeds 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 Leeds to Illinois, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Leeds to Illinois

Cheapest return prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago2 stops£622
Peoria
Peoria3 stops£942
Chicago
Chicago2 stops£622
Peoria
Peoria3 stops£942

Book Cheap Leeds to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Leeds 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 Leeds to Illinois

Mon, 13 Jul - Mon, 20 Jul
Multiple Airlines Logo
06:00 - 21:25
LBA
-
ORD
21h 25m
2 stops
Multiple Airlines Logo
19:25 - 23:50
ORD
-
LBA
22h 25m
2 stops
£622Multiple Airlines
Mon, 13 Jul - Mon, 20 Jul
Multiple Airlines Logo
06:00 - 14:00
LBA
-
ORD
14h 00m
1 stop
Multiple Airlines Logo
15:45 - 11:00
ORD
-
LBA
13h 15m
1 stop
£629Multiple Airlines
Wed, 9 Sep - Sun, 13 Sep
British Airways Logo
21:10 - 19:30
LBA
-
ORD
28h 20m
2 stops
British Airways Logo
21:00 - 08:15
ORD
-
LBA
29h 15m
1 stop
£637British Airways
Wed, 9 Sep - Sun, 13 Sep
British Airways Logo
21:10 - 19:30
LBA
-
ORD
28h 20m
2 stops
British Airways Logo
21:00 - 08:15
ORD
-
LBA
29h 15m
1 stop
£638British Airways
Mon, 7 Sep - Sun, 13 Sep
KLM Logo
17:25 - 16:47
LBA
-
STL
29h 22m
2 stops
KLM Logo
19:05 - 09:30
STL
-
LBA
32h 25m
2 stops
£695KLM
Wed, 1 Jul - Wed, 8 Jul
Delta Logo
06:30 - 18:31
LBA
-
MDW
18h 01m
2 stops
Delta Logo
09:19 - 09:40
MDW
-
LBA
18h 21m
2 stops
£785Delta
Mon, 13 Jul - Mon, 20 Jul
Delta Logo
06:30 - 18:18
LBA
-
MDW
17h 48m
2 stops
Delta Logo
09:19 - 09:40
MDW
-
LBA
18h 21m
2 stops
£786Delta
Tue, 14 Jul - Mon, 20 Jul
KLM Logo
10:10 - 23:22
LBA
-
STL
19h 12m
2 stops
KLM Logo
18:58 - 16:55
STL
-
LBA
15h 57m
2 stops
£800KLM
Tue, 14 Jul - Tue, 21 Jul
Air France Logo
10:10 - 23:22
LBA
-
STL
19h 12m
2 stops
Air France Logo
10:51 - 09:40
STL
-
LBA
16h 49m
2 stops
£816Air France
Sat, 11 Jul - Mon, 20 Jul
Air France Logo
10:10 - 22:15
LBA
-
MDW
18h 05m
2 stops
Air France Logo
13:18 - 09:40
MDW
-
LBA
14h 22m
2 stops
£820Air France
Booking Insights

KAYAK's insights & trends for Leeds to Illinois flights

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

What is the cheapest month to fly from Leeds to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Leeds to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Leeds to Illinois is February, when tickets cost £0 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £696 and £666 respectively.

Good to know - Cheap tickets from Leeds to Illinois

Low seasonSeptember
Cheapest flight£472
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly and prices are also 24% lower on average.
Flight from Leeds to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Leeds 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 Leeds to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Leeds 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 Leeds 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 Leeds 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 Leeds 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 Leeds 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 airlines flying from Leeds to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Leeds 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 Leeds 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 1530 reviews
7.3Food
7.2Entertainment
7.8Boarding
7.7Comfort
8.4Crew
Airline reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

8.0 ExcellentAnonymous, Jun 2026
LHR - AMS
Read more KLM reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

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

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

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

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

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

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

From Rome to Dublin if you want any refreshments you have to pay for them, Not used to this as we typically get soft drinks and a little snack on a 3hour flight in the US.

Boarding was fine, difficult to understand the guy over the speaker though so we were unsure when exactly to board until they updated the monitor by the gate. Flight itself was fine, nice flight attendants, seats were comfortable enough, good selection of entertainment on the screens. Other airlines at a similar price point have included wifi though, at a minimum messaging, for free, so that was a little disappointing to not have that. But otherwise fine. Food was pretty decent, nice hot meal, good drink selection, nice snacks. Bathrooms were ok, could've been cleaned a little more often, but they were never bad.

Aer Lingus App never showed the gate and the board did not update until very close to the time the gate was due to close. Both planes departed late but no announcement was made which would have saved a run for the gate.

Vegetarian food option was very poor. Effectively, overcooked rice ("risotto"). Zero protein which is always disappointing with no vegetables and poorly seasoned. Basically had lots of carbs on 6-hour flight. Not acceptable for business class in 2026. Flight was otherwise very good.

Small plane. Tight seating . What can one say except that it was fast!

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

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

Information on your arrival and departure airports