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Cheap flights to Illinois from £185

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 10/6. 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.
BOS — ORD
13 May — 20 May1
1 adult
Mon 13/5
Mon 20/5

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 881,145 searches and data was last updated on 8 May 2024.

Popular in

July

Cheapest in

February

Average price

£549

Return from

£379

One-way from

£185
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 8 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
Tue 4/613:40LGW - ORD
2 stops26h 34mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£375
Wed 5/611:05LGW - ORD
2 stops29h 09mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£377
Fri 14/611:05LHR - ORD
Nonstop8h 40mFinnair
Thu 20/622:25ORD - LHR
Nonstop7h 50mFinnair
Deal found 7/5£379
Tue 4/620:40LGW - ORD
1 stop19h 34mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£402
Wed 15/510:20LHR - ORD
1 stop13h 05mFinnair
Mon 20/523:00ORD - LHR
Nonstop7h 45mFinnair
Deal found 7/5£404
Wed 15/509:00LHR - ORD
1 stop12h 00mVirgin Atlantic
Mon 20/512:20ORD - LHR
1 stop12h 55mVirgin Atlantic
Deal found 7/5£409
Wed 5/613:05LGW - ORD
1 stop14h 47mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£411
Wed 15/511:05LHR - ORD
Nonstop8h 40mBritish Airways
Mon 20/518:00ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/5£412
Wed 15/509:30LHR - ORD
1 stop11h 11mMultiple Airlines
Mon 20/515:45ORD - LHR
Nonstop8h 10mMultiple Airlines
Deal found 8/5£416
Cheap flights to Peoria, Illinois
Fri 17/510:05LHR - PIA
1 stop31h 00mAmerican Airlines
Mon 20/516:25PIA - LHR
1 stop13h 45mAmerican Airlines
Deal found 8/5£779
Fri 17/512:15LHR - PIA
1 stop15h 20mBritish Airways
Mon 20/514:49PIA - LHR
1 stop11h 01mBritish Airways
Deal found 8/5£781
Fri 17/515:15LHR - PIA
1 stop13h 20mAmerican Airlines
Mon 20/516:25PIA - LHR
1 stop13h 45mAmerican Airlines
Deal found 8/5£785
Wed 15/509:15LHR - PIA
1 stop12h 39mBritish Airways
Wed 22/506:20PIA - LHR
1 stop9h 50mBritish Airways
Deal found 8/5£825
Wed 15/509:15LHR - PIA
1 stop12h 39mBritish Airways
Wed 22/516:25PIA - LHR
2 stops12h 50mBritish Airways
Deal found 8/5£857
Wed 15/508:40LHR - PIA
2 stops18h 20mUnited Airlines
Wed 22/515:45PIA - LHR
2 stops12h 55mUnited Airlines
Deal found 8/5£1,183
Wed 15/509:15LCY - PIA
2 stops17h 45mLufthansa
Wed 22/511:01PIA - LCY
2 stops23h 24mLufthansa
Deal found 8/5£1,497
Cheap flights to Moline, Illinois
Thu 13/618:15LHR - MLI
2 stops27h 59mAmerican Airlines
Mon 17/616:45MLI - LHR
1 stop11h 35mAmerican Airlines
Deal found 8/5£875
Thu 13/618:15LHR - MLI
2 stops27h 59mAmerican Airlines
Mon 17/607:05MLI - LHR
2 stops17h 15mAmerican Airlines
Deal found 8/5£877
Wed 19/612:10LHR - MLI
2 stops15h 57mVirgin Atlantic
Fri 12/706:05MLI - LHR
1 stop18h 20mVirgin Atlantic
Deal found 7/5£881
Thu 13/608:40LHR - MLI
2 stops19h 27mDelta
Mon 17/606:05MLI - LHR
2 stops19h 10mDelta
Deal found 8/5£887
Wed 19/612:10LHR - MLI
2 stops15h 57mVirgin Atlantic
Fri 12/706:05MLI - LHR
2 stops19h 10mVirgin Atlantic
Deal found 7/5£889
Thu 6/606:10LHR - MLI
2 stops16h 04mAmerican Airlines
Thu 13/607:05MLI - LHR
1 stop18h 35mAmerican Airlines
Deal found 7/5£893
Thu 13/612:45LHR - MLI
1 stop15h 22mDelta
Mon 17/606:05MLI - LHR
1 stop18h 20mDelta
Deal found 8/5£901
Wed 19/615:35LHR - MLI
1 stop11h 56mMultiple Airlines
Fri 12/715:57MLI - LHR
1 stop12h 43mMultiple Airlines
Deal found 7/5£903
Thu 6/609:15LHR - MLI
1 stop12h 38mAmerican Airlines
Thu 13/616:23MLI - LHR
1 stop10h 42mAmerican Airlines
Deal found 7/5£908

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 881,145 searches and data were last updated on 8 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.
Tue 4/613:40LGW - ORD
2 stops26h 34mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£375
Thu 21/1119:55LHR - ORD
1 stop25h 35mTAP AIR PORTUGAL
Sun 1/1220:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Deal found 7/5£375
Wed 5/611:05LGW - ORD
2 stops29h 09mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£377
Fri 14/611:05LHR - ORD
Nonstop8h 40mFinnair
Thu 20/622:25ORD - LHR
Nonstop7h 50mFinnair
Deal found 7/5£379
Thu 12/918:45LHR - ORD
1 stop27h 15mTAP AIR PORTUGAL
Mon 16/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 7/5£387
Thu 12/918:45LHR - ORD
1 stop27h 15mTAP AIR PORTUGAL
Sat 28/918:00ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Deal found 8/5£388
Wed 11/908:00LHR - ORD
1 stop14h 10mTAP AIR PORTUGAL
Sun 15/918:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 7/5£399
Fri 13/918:45LHR - ORD
1 stop27h 25mTAP AIR PORTUGAL
Mon 30/918:00ORD - LHR
1 stop18h 50mTAP AIR PORTUGAL
Deal found 7/5£401
Tue 4/620:40LGW - ORD
1 stop19h 34mMultiple Airlines
Tue 10/907:27ORD - LGW
1 stop17h 33mMultiple Airlines
Deal found 8/5£402

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 881,145 searches and data was last updated on 8 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.
Wed 15/510:20LHR - ORD
1 stop13h 05mFinnair
Mon 20/523:00ORD - LHR
Nonstop7h 45mFinnair
Deal found 7/5£404
Fri 17/510:30LHR - PIA
2 stops18h 05mAmerican Airlines
Mon 20/516:25PIA - LHR
1 stop13h 45mAmerican Airlines
Deal found 8/5£779

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 881,145 searches and data was last updated on 8 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 10/618:10LGW - ORD
2 stops46h 04mMultiple Airlines
Deal found 7/5£185

Direct flights to Illinois

Fri 14/611:05LHR - ORD
Nonstop8h 40mFinnair
Thu 20/622:25ORD - LHR
Nonstop7h 50mFinnair
Deal found 7/5£379
Tue 10/915:35LHR - ORD
Nonstop8h 40mBritish Airways
Mon 23/921:15ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/5£405
Tue 10/913:10LHR - ORD
Nonstop8h 40mBritish Airways
Mon 23/916:45ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/5£407
Tue 24/913:10LHR - ORD
Nonstop8h 40mFinnair
Thu 3/1019:10ORD - LHR
Nonstop7h 50mFinnair
Deal found 8/5£415
Mon 16/913:10LHR - ORD
Nonstop8h 40mBritish Airways
Thu 26/908:20ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 8/5£418
Mon 28/1011:00LHR - ORD
Nonstop8h 55mBritish Airways
Mon 4/1117:00ORD - LHR
Nonstop7h 40mBritish Airways
Deal found 7/5£420
Wed 11/911:05LHR - ORD
Nonstop8h 40mBritish Airways
Wed 2/1021:25ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/5£429
Tue 10/911:05LHR - ORD
Nonstop8h 40mBritish Airways
Tue 8/1019:15ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 7/5£430
Thu 12/913:10LHR - ORD
Nonstop8h 40mBritish Airways
Thu 26/919:10ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 8/5£435

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 £185 while a return flight costs £417. Price data was last updated on 5 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 £782). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

£481

February

£496

March

£487

April

£498

May

£516

June

£605

July

£626

August

£573

September

£536

October

£518

November

£499

December

£503

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 3 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 8 May 2024.
To help decide which airline to fly to Illinois, see what other customers have to say about Finnair, TAP AIR PORTUGAL and British Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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.

8.1
Very Good
10,789 reviews
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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
1,592 reviews
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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
2,013 reviews
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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
1,379 reviews
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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
739 reviews
8.1
Very Good
10,789 reviews

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

8.0

Comfort

7.9

Overall

8.1

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 Midway Airport is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago Midway Airport typically cost £31, while return flights cost around £49.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around £247, however they can be found for as little as £61.

  • 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).

  • Which airport is closest to Allstate Arena?

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

  • 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

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