Find flights
Deals
When to book
Airlines
Travel Guide

Cheap flights to Illinois from £183

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 3/6. 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.
CMH — ORD
23 May — 30 May1
1 adult
Thu 23/5
Thu 30/5

Flights to Illinois in 2024

Find the latest flights to Illinois in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 835,321 searches and data was last updated on 18 May 2024.

Popular in

July

Cheapest in

February

Average price

£541

Return from

£376

One-way from

£183
High demand for flights, 17% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for return flights in May 2024
From London to Chicago
One-way flight from London to Illinois

Find flights to Illinois

Browse one-way and return flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 18 May 2024
Explore Illinois

Cheap flights to Illinois in May & June 2024

Search the best deals to popular Illinois cities recently found by Cheapflights users
The deals listed below are some of the cheapest flights available to Illinois in May and June 2024. Prices refresh often so be sure to come back soon for more deals.
Cheap flights to Chicago, Illinois
Fri 31/515:35LHR - ORD
2 stops32h 20mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 17/5£376
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 17/5£379
Sat 1/606:40LHR - ORD
1 stop17h 15mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 17/5£383
Thu 27/613:05LGW - ORD
1 stop14h 47mMultiple Airlines
Wed 17/717:19ORD - LGW
1 stop14h 11mMultiple Airlines
Deal found 18/5£386
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 17/5£387
Sat 1/610:35LHR - ORD
2 stops37h 20mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop19h 55mScandinavian Airlines
Deal found 17/5£399
Sat 8/610:00LGW - ORD
1 stop29h 04mMultiple Airlines
Mon 8/717:34ORD - LGW
1 stop31h 26mMultiple Airlines
Deal found 17/5£400
Wed 29/509:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Wed 5/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 17/5£402
Mon 3/621:05LHR - ORD
2 stops26h 50mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop19h 55mScandinavian Airlines
Deal found 18/5£405
Cheap flights to Peoria, Illinois
Sun 16/612:15LHR - PIA
1 stop11h 39mFinnair
Sun 23/616:34PIA - LHR
1 stop33h 06mFinnair
Deal found 17/5£932
Sun 16/608:30LHR - PIA
1 stop12h 44mUnited Airlines
Sun 23/615:50PIA - LHR
1 stop32h 05mUnited Airlines
Deal found 17/5£965
Sun 16/610:35LHR - PIA
2 stops29h 50mUnited Airlines
Sun 23/611:00PIA - LHR
2 stops23h 20mUnited Airlines
Deal found 17/5£1,014
Sun 16/619:20LHR - PIA
2 stops28h 34mBritish Airways
Sun 23/618:19PIA - LHR
1 stop21h 51mBritish Airways
Deal found 17/5£1,024
Sun 16/619:30LHR - PIA
2 stops49h 44mLufthansa
Sun 23/615:50PIA - LHR
2 stops35h 50mLufthansa
Deal found 17/5£1,100
Thu 23/508:40LHR - PIA
2 stops36h 34mUnited Airlines
Thu 30/507:00PIA - LHR
2 stops17h 45mUnited Airlines
Deal found 16/5£1,324
Thu 23/513:05LHR - PIA
1 stop14h 07mUnited Airlines
Thu 30/515:50PIA - LHR
1 stop13h 55mUnited Airlines
Deal found 16/5£1,332
Sun 16/622:00LHR - PIA
2 stops25h 54mMultiple Airlines
Sun 23/615:50PIA - LHR
2 stops17h 55mMultiple Airlines
Deal found 17/5£3,040
Sun 16/617:50LCY - PIA
2 stops27h 24mLufthansa
Sun 23/615:50PIA - LCY
2 stops18h 35mLufthansa
Deal found 17/5£3,152
Cheap flights to Moline, Illinois
Sun 16/608:10LHR - MLI
1 stop14h 04mFinnair
Sun 23/616:23MLI - LHR
1 stop33h 17mFinnair
Deal found 17/5£932
Sun 16/608:30LHR - MLI
2 stops18h 47mMultiple Airlines
Sun 23/617:45MLI - LHR
1 stop32h 45mMultiple Airlines
Deal found 17/5£947
Sun 16/613:40LHR - MLI
2 stops26h 41mUnited Airlines
Sun 23/617:45MLI - LHR
2 stops30h 45mUnited Airlines
Deal found 17/5£965
Thu 13/618:15LHR - MLI
2 stops27h 59mAmerican Airlines
Mon 17/607:05MLI - LHR
1 stop20h 00mAmerican Airlines
Deal found 17/5£981
Thu 13/609:30LHR - MLI
2 stops13h 27mMultiple Airlines
Mon 17/615:47MLI - LHR
2 stops14h 03mMultiple Airlines
Deal found 17/5£985
Thu 13/607:30LHR - MLI
2 stops19h 47mLufthansa
Mon 17/617:45MLI - LHR
1 stop33h 15mLufthansa
Deal found 17/5£987
Thu 13/608:30LHR - MLI
1 stop14h 27mLufthansa
Mon 17/617:45MLI - LHR
1 stop33h 15mLufthansa
Deal found 17/5£993
Thu 13/607:50LCY - MLI
2 stops19h 27mLufthansa
Mon 17/617:45MLI - LCY
2 stops42h 50mLufthansa
Deal found 17/5£1,033
Sun 16/620:55LHR - MLI
2 stops26h 00mKLM
Sun 23/617:35MLI - LHR
2 stops31h 10mKLM
Deal found 17/5£1,034

Illinois 2024 flight deals

Explore flight deals for Illinois in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 835,321 searches and data were last updated on 18 May 2024.
These are some of the best deals we've found on flights to Illinois in 2024 at this time. Check back regularly for other flight deals.
Fri 15/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Fri 29/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Deal found 17/5£360
Fri 15/1106:00LHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
Fri 29/1120:25ORD - LHR
1 stop16h 30mTAP AIR PORTUGAL
Deal found 17/5£368
Sat 16/1112:00LGW - ORD
1 stop11h 20mIcelandair
Mon 25/1118:30ORD - LGW
1 stop10h 25mIcelandair
Deal found 17/5£373
Fri 31/515:35LHR - ORD
2 stops32h 20mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 17/5£376
Fri 31/520:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Sun 2/619:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Deal found 17/5£379
Tue 10/916:25LGW - ORD
1 stop29h 45mTAP AIR PORTUGAL
Sun 15/918:00ORD - LGW
1 stop15h 10mTAP AIR PORTUGAL
Deal found 17/5£383
Sat 1/606:40LHR - ORD
1 stop17h 15mScandinavian Airlines
Mon 10/619:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 17/5£383
Thu 27/613:05LGW - ORD
1 stop14h 47mMultiple Airlines
Wed 17/717:19ORD - LGW
1 stop14h 11mMultiple Airlines
Deal found 18/5£386
Thu 12/919:50LHR - ORD
1 stop26h 10mTAP AIR PORTUGAL
Sun 15/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 17/5£386

Flights to Illinois departing soon

Discover available last-minute flight options to Illinois, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 835,321 searches and data was last updated on 18 May 2024.
Have a look at some of the best last-minute flights available departing to Illinois. Make sure to double check the price, time, and destination to confirm all are correct.
Thu 23/510:00LGW - ORD
1 stop28h 55mMultiple Airlines
Tue 16/707:32ORD - LGW
1 stop17h 28mMultiple Airlines
Deal found 16/5£432
Thu 23/508:40LHR - PIA
2 stops36h 34mUnited Airlines
Thu 30/507:00PIA - LHR
2 stops17h 45mUnited Airlines
Deal found 16/5£1,324

One-way flights to Illinois

Explore one-way flight options to Illinois for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 835,321 searches and data was last updated on 18 May 2024.
Take a look at some of the one-way flights departing to Illinois in the near future. Users can also find round-trip Illinois flights by using the search form above.
Mon 3/610:00LGW - ORD
1 stop28h 45mMultiple Airlines
Deal found 17/5£183
Sun 16/614:10LHR - PIA
2 stops28h 14mMultiple Airlines
Deal found 17/5£946
Sun 16/614:10LHR - MLI
2 stops32h 45mWestJet
Deal found 17/5£903

Direct flights to Illinois

Thu 30/514:45LHR - ORD
Nonstop8h 35mAmerican Airlines
Wed 5/608:10ORD - LHR
Nonstop8h 00mAmerican Airlines
Deal found 17/5£471
Mon 10/612:15LHR - ORD
Nonstop8h 40mAmerican Airlines
Wed 19/608:10ORD - LHR
Nonstop8h 00mAmerican Airlines
Deal found 17/5£474
Mon 3/614:45LHR - ORD
Nonstop8h 35mAmerican Airlines
Mon 10/622:25ORD - LHR
Nonstop7h 50mAmerican Airlines
Deal found 18/5£475
Wed 3/714:25LHR - ORD
Nonstop8h 42mAmerican Airlines
Wed 10/722:45ORD - LHR
Nonstop7h 30mAmerican Airlines
Deal found 18/5£476
Tue 29/1012:05LHR - ORD
Nonstop9h 20mLufthansa
Tue 5/1121:10ORD - LHR
Nonstop8h 05mLufthansa
Deal found 17/5£484
Wed 3/714:25LHR - ORD
Nonstop8h 42mAmerican Airlines
Thu 30/109:00ORD - LHR
Nonstop7h 40mAmerican Airlines
Deal found 18/5£485
Mon 28/1015:45LHR - ORD
Nonstop9h 00mFinnair
Mon 4/1117:00ORD - LHR
Nonstop7h 40mFinnair
Deal found 17/5£491
Wed 25/910:05LHR - ORD
Nonstop9h 00mAmerican Airlines
Mon 30/908:20ORD - LHR
Nonstop7h 50mAmerican Airlines
Deal found 17/5£496
Mon 23/913:05LHR - ORD
Nonstop9h 10mLufthansa
Mon 30/918:15ORD - LHR
Nonstop8h 15mLufthansa
Deal found 17/5£499

Find flights to Illinois within your budget

Locate flights to Illinois that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 835,321 searches and data was last updated on 18 May 2024.

Fly from

Any airport

Budget

£376 - £507

Route

Depart

Return

Price

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Fri 31/5

2 stops32h 20m

Chicago O'Hare Intl

Sun 2/6

1 stop15h 55m

£376

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Tue 10/9

1 stop29h 45m

Chicago O'Hare Intl

Sun 15/9

1 stop15h 10m

£383

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Thu 27/6

1 stop14h 47m

Chicago O'Hare Intl

Wed 17/7

1 stop14h 11m

£386

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Fri 1/11

1 stop26h 55m

Chicago O'Hare Intl

Mon 11/11

1 stop10h 25m

£390

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Fri 13/9

1 stop12h 54m

Chicago O'Hare Intl

Mon 30/9

1 stop16h 50m

£456

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Thu 30/5

Nonstop8h 35m

Chicago O'Hare Intl

Wed 5/6

Nonstop8h 00m

£471

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Tue 29/10

Nonstop9h 20m

Chicago O'Hare Intl

Tue 5/11

Nonstop8h 05m

£484

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Tue 24/9

1 stop11h 15m

Chicago O'Hare Intl

Thu 3/10

Nonstop8h 15m

£491

London HeathrowChicago Midway

LHR - MDW

LHRMDW

London Heathrow

Mon 28/10

2 stops15h 33m

Chicago Midway

Mon 4/11

1 stop13h 15m

£507

Flights are sorted by cheapest first

Deals found on 17/5

Average price of flights to Illinois by month

Plan your trip to Illinois by taking into account the cheapest months to travel. The average price of a one-way flight to Illinois is currently £677 while a return flight costs £438. Price data was last updated on 12 May 2024.

Currently, January is the cheapest month in which you can book a flight to Illinois (average of £601). Flying to Illinois in July will prove the most costly (average of £775). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

£474

February

£489

March

£480

April

£491

May

£516

June

£594

July

£611

August

£563

September

£527

October

£510

November

£491

December

£495

Temperature and rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average temperature and rainfall totals by month.

CHI

Temperature

-5 - 23 °C

If weather is an important factor for your trip to Illinois, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

When is the best time to book a flight to Illinois?

Use this chart to determine the optimal time to book a return flight to Illinois. Price data was last updated on 10 May 2024.
The best time to book flights to Illinois is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 18 May 2024.
To help decide which airline to fly to Illinois, see what other customers have to say about Scandinavian Airlines, TAP AIR PORTUGAL and Icelandair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

8.0
Very Good
10,647 reviews
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.9
Good
1,561 reviews
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.8
Good
1,984 reviews
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.8
Good
1,374 reviews
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.7
Good
733 reviews
8.0
Very Good
10,647 reviews

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Sitting along the banks of the Mississippi River and Lake Michigan, Illinois’s accessible location has for centuries made it an important hub. Historically emigrants from Mexico, Ireland and Poland would make the long journey over in search of work and a new home. Abraham Lincoln was among those who called Illinois home and the state honoured him by naming the small city of Lincoln after him – beforehe became president.

Most travellers booking flights to Illinois would probably pick Chicago as their city of choice for its renowned restaurant scene and shopping but there’s so much more to see in including 6,900 kilometres of shoreline and more than 50 state parks, making it one of the most scenic states in the US.

Illinois climate

Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.

Getting around Illinois

Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.

What is good to know if travelling to Illinois?

  • Chicago has a wealth of things to see and do. The best view of the city can be found at 1,450 feet from the top of North America’s tallest building – the Sears Tower. Head to the 103rd floor to the Skydeck where you can see the entire city laid out.  The Hancock Building is also well worth a visit and offers stunning city views from its observation deck or cocktail bar.
  • Don’t miss a trip to the Anderson Japanese Gardens in Rockford. Set on twelve acres the gardens are adorned with Japanese maples, magnolias, and rhododendrons and have several ponds and waterfalls with Japanese bronze structures surrounding them. There’s also an authentic tea house and contemporary “Garden of Reflection”.  
  • Visit the preserved Frank Lloyd Wright Museum on Chicago Avenue in Oak Park where the famed architect spent 20 years of his career and designed 130 of his masterpieces.  Wright lived here until 1909.
  • One of the most visited attractions in Chicago is the Art Institute of Chicago. Art lovers – well any visitor – shouldn’t miss a trip to the museum, it’s remarkable. The gargantuan building houses more than 250,000 works of art from all over the world including ancient Egyptian, Japanese, Korean, Greek and Roman relics. One of its highlights is the anthology of Impressionist art which has an impressive collection by Monet, Pablo Picasso and Henri Matisse to name a few.
  • Anyone interested in the lives of the Amish people should head to central Illinois where a welcoming group of Amish villages are set up. Take a tour of the community in the Illinois Amish Interpretative Centre in Arcola, visit a working farm and watch how supper is prepared and enjoyed in a family home.
  • When is the best time to fly to Illinois?

    Peak Season: Winter is peak season in Illinois for skiing and snowmobiling. In summer many different festivals take place in Chicago’s parks and neighbourhoods almost every weekend, making it difficult to find a cheap Illinois flight. Off Season: The best month to book a cheap Illinois flight is September, which is also the mildest month. Autumn is visually the prettiest time to visit when the temperature is still mild and the foliage is changing. The quietest months in Chicago are from January to March but they can also be the coldest and windiest.

  • Can I find cheaper flights to Illinois if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Illinois on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Illinois?

    Based on reviews from Cheapflights users, Scandinavian Airlines is rated the highest out of the airlines that fly to Illinois.

  • What is the cheapest airport to fly to in Illinois?

    Chicago O'Hare Intl Airport is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago O'Hare Intl Airport typically cost £37, while return flights cost around £39.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around £265, however they can be found for as little as £50.

  • Where does the fastest flight to Illinois depart from?

    For those looking to save time traveling to Illinois, Edinburgh offers the quickest one-way flight (8 hours 25 minutes).

  • Does Chicago O'Hare Intl Airport have car hire?

    Yes. Those touching down at Chicago O'Hare Intl Airport can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Chicago O'Hare Intl Airport?

    Yes. Chicago O'Hare Intl Airport has hotels nearby for those requiring accommodations. Hilton Chicago O'Hare Airport is the closest property to Chicago O'Hare Intl Airport (0.0 mi away from Chicago O'Hare Intl Airport).

See more FAQs

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.

Search flights to Illinois by cabin class

Find flights to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Classfrom £2,255/person
Business Classfrom £1,219/person
Prem Econ Classfrom £980/person
Economy classfrom £461/person
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.