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£189+ Cheap flights to Illinois

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ORD
31 Jul — 7 Aug1
1 adult
Wed 31/7
Wed 7/8

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 1,000,913 searches and data was last updated on 26 July 2024.

Return from

£358

One-way from

£189

Popular in

July

Cheapest in

February

Average price

£700
5/9-11/9
  • 5/9-11/9
  • 2 total stops
  • 35h 43m total
  • London to Chicago
29/9
  • 29/9
  • 2 total stops
  • 44h 35m total
  • London to Illinois
High demand for flights, 18% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for return flights in July 2024

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 26 July 2024
Explore Illinois

Cheap flights to Illinois in July & August 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 July and August 2024. Prices refresh often so be sure to come back soon for more deals.
Cheap flights to Chicago, Illinois
Wed 28/807:50LGW - ORD
2 stops29h 27mMultiple Airlines
Tue 10/908:35ORD - LGW
1 stop19h 25mMultiple Airlines
Deal found 25/7£369
Mon 26/813:00LGW - ORD
1 stop14h 15mIcelandair
Wed 4/919:25ORD - LGW
1 stop10h 20mIcelandair
Deal found 25/7£380
Tue 27/819:50LHR - ORD
1 stop26h 20mTAP AIR PORTUGAL
Wed 6/1119:15ORD - LHR
1 stop14h 15mTAP AIR PORTUGAL
Deal found 25/7£381
Mon 26/821:25LHR - ORD
1 stop26h 50mIcelandair
Wed 4/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 25/7£383
Thu 29/814:00LGW - ORD
1 stop16h 27mMultiple Airlines
Tue 10/907:00ORD - LGW
1 stop18h 00mMultiple Airlines
Deal found 25/7£401
Tue 27/814:00LGW - ORD
1 stop16h 27mMultiple Airlines
Sat 7/907:00ORD - LGW
1 stop18h 00mMultiple Airlines
Deal found 25/7£404
Fri 23/821:25LHR - ORD
1 stop26h 50mIcelandair
Wed 4/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 25/7£405
Wed 28/814:00LGW - ORD
1 stop16h 27mMultiple Airlines
Tue 10/912:53ORD - LGW
1 stop15h 07mMultiple Airlines
Deal found 25/7£408
Thu 29/821:25LHR - ORD
1 stop26h 50mIcelandair
Thu 5/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 25/7£408
Cheap flights to Peoria, Illinois
Fri 23/806:50LHR - PIA
2 stops14h 11mUnited Airlines
Thu 29/806:45PIA - LHR
1 stop19h 45mUnited Airlines
Deal found 26/7£1,175
Fri 23/806:50LHR - PIA
2 stops14h 11mUnited Airlines
Thu 29/806:45PIA - LHR
1 stop19h 45mUnited Airlines
Deal found 25/7£1,177
Fri 23/813:05LHR - PIA
1 stop14h 07mUnited Airlines
Thu 29/806:45PIA - LHR
1 stop19h 45mUnited Airlines
Deal found 26/7£1,183
Fri 23/813:05LHR - PIA
1 stop14h 07mUnited Airlines
Thu 29/810:55PIA - LHR
1 stop15h 35mUnited Airlines
Deal found 25/7£1,185

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 1,000,913 searches and data were last updated on 26 July 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.
Tue 10/913:40LGW - ORD
2 stops26h 30mMultiple Airlines
Fri 13/917:05ORD - LGW
1 stop31h 15mMultiple Airlines
Deal found 24/7£338
Sun 22/910:45LGW - ORD
1 stop27h 06mMultiple Airlines
Thu 26/911:10ORD - LGW
1 stop20h 20mMultiple Airlines
Deal found 24/7£343
Thu 19/912:00LGW - STL
1 stop39h 00mMultiple Airlines
Mon 23/909:33STL - LGW
1 stop18h 27mMultiple Airlines
Deal found 25/7£346
Mon 9/910:45LGW - ORD
1 stop19h 43mMultiple Airlines
Fri 13/917:05ORD - LGW
1 stop31h 15mMultiple Airlines
Deal found 24/7£350
Sun 22/910:45LGW - ORD
1 stop27h 06mMultiple Airlines
Thu 26/912:53ORD - LGW
2 stops18h 37mMultiple Airlines
Deal found 24/7£353
Thu 5/910:45LGW - ORD
1 stop19h 43mMultiple Airlines
Tue 10/916:36ORD - LGW
1 stop35h 24mMultiple Airlines
Deal found 24/7£357
Thu 5/910:45LGW - ORD
1 stop19h 43mMultiple Airlines
Wed 11/912:00ORD - LGW
1 stop16h 00mMultiple Airlines
Deal found 25/7£358
Wed 11/910:45LGW - ORD
1 stop27h 06mMultiple Airlines
Wed 25/919:30ORD - LGW
1 stop10h 15mMultiple Airlines
Deal found 24/7£361
Tue 17/913:40LGW - ORD
2 stops26h 30mMultiple Airlines
Tue 24/912:53ORD - LGW
1 stop15h 07mMultiple Airlines
Deal found 24/7£363

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 1,000,913 searches and data was last updated on 26 July 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.
Wed 31/720:30LHR - ORD
1 stop27h 25mScandinavian Airlines
Sun 15/919:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Deal found 25/7£656

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 1,000,913 searches and data was last updated on 26 July 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.
Sun 29/919:35LGW - ORD
2 stops44h 35mMultiple Airlines
Deal found 24/7£189

Direct flights to Illinois

Mon 16/910:05LHR - ORD
Nonstop8h 30mFinnair
Tue 1/1020:35ORD - LHR
Nonstop7h 45mFinnair
Deal found 25/7£474
Tue 17/915:35LHR - ORD
Nonstop8h 40mFinnair
Mon 23/921:15ORD - LHR
Nonstop7h 50mFinnair
Deal found 24/7£474
Mon 28/1015:45LHR - ORD
Nonstop9h 00mFinnair
Mon 4/1118:35ORD - LHR
Nonstop7h 40mFinnair
Deal found 25/7£476
Mon 16/908:30LHR - ORD
Nonstop8h 55mBrussels Airlines
Mon 30/915:50ORD - LHR
Nonstop8h 05mBrussels Airlines
Deal found 24/7£481
Tue 24/915:35LHR - ORD
Nonstop8h 40mFinnair
Wed 9/1008:20ORD - LHR
Nonstop7h 50mFinnair
Deal found 25/7£482
Mon 16/910:05LHR - ORD
Nonstop8h 30mFinnair
Wed 25/917:50ORD - LHR
Nonstop7h 40mFinnair
Deal found 24/7£483
Tue 24/912:15LHR - ORD
Nonstop8h 35mFinnair
Tue 8/1022:25ORD - LHR
Nonstop7h 50mFinnair
Deal found 25/7£486
Mon 16/908:30LHR - ORD
Nonstop8h 55mLufthansa
Tue 1/1015:50ORD - LHR
Nonstop8h 05mLufthansa
Deal found 24/7£491
Mon 16/908:30LHR - ORD
Nonstop8h 55mAustrian Airlines
Mon 30/915:50ORD - LHR
Nonstop8h 05mAustrian Airlines
Deal found 25/7£493

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 1,000,913 searches and data was last updated on 26 July 2024.

Fly from

Any airport

Budget

£358 - £479

Route

Depart

Return

Price

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Thu 5/9

1 stop19h 43m

Chicago O'Hare Intl

Wed 11/9

1 stop16h 00m

£358

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Wed 20/11

1 stop15h 30m

Chicago O'Hare Intl

Sun 24/11

1 stop15h 05m

£373

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Mon 26/8

1 stop14h 15m

Chicago O'Hare Intl

Wed 4/9

1 stop10h 20m

£380

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Mon 9/9

2 stops50h 50m

Chicago O'Hare Intl

Mon 23/9

1 stop19h 55m

£384

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Wed 30/10

Nonstop8h 55m

Chicago O'Hare Intl

Mon 4/11

1 stop13h 22m

£435

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Mon 9/9

1 stop17h 20m

Chicago O'Hare Intl

Mon 23/9

Nonstop8h 15m

£436

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Mon 9/9

1 stop25h 56m

Chicago O'Hare Intl

Mon 23/9

1 stop10h 47m

£445

London GatwickChicago O'Hare Intl

LGW - ORD

LGWORD

London Gatwick

Tue 24/9

1 stop13h 15m

Chicago O'Hare Intl

Tue 8/10

1 stop16h 30m

£451

London HeathrowChicago O'Hare Intl

LHR - ORD

LHRORD

London Heathrow

Tue 17/12

1 stop14h 05m

Chicago O'Hare Intl

Mon 23/12

1 stop12h 25m

£479

Flights are sorted by cheapest first

Deals found on 25/7

Best time to book a flight to Illinois

Have a flexible travel schedule? Discover the best time to fly to 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.

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 23 July 2024.
The best time to book flights to Illinois is 74 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 26 July 2024.
To help decide which airline to fly to Illinois, see what other customers have to say about ITA Airways, Scandinavian Airlines and Icelandair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

8.0
Very Good
9,630 reviews
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.9
Good
1,417 reviews
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.7
Good
1,799 reviews
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.7
Good
1,332 reviews
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.7
Good
933 reviews
8.0
Very Good
9,630 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Overall

8.0

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

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, Icelandair 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 is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago O'Hare Intl typically cost £19, while return flights cost around £49.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around £195, however they can be found for as little as £63.

  • Where does the fastest flight to Illinois depart from?

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

  • Which airport is closest to Drury Lane Theater?

    f being close to Drury Lane Theater is important to you, you’ll want to land at Chicago O'Hare Intl Airport.

  • Does Chicago O'Hare Intl have car hire?

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

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

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

See more FAQs

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Millions of users choose and trust Cheapflights to book the best flight deals to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to Illinois with no change fees?

Certainly. Search results for flights to Illinois shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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