GBP/GB
Find cheap flights to Illinois in 2025/2026 from £311 This is the cheapest return flight found to Illinois from UK on FlightsFinder on December 5th 2025 at 03:43. This offer may no longer be available. Click the offer to check live prices & dates of travel.
Our Flight Finder compares the cheapest flights to Illinois from the most established flight comparison sites.
Fly to Illinois and visit sites like Millennium Park, Willis Tower, Navy Pier & The Art Institute of Chicago.
1. Enter your search requirements for Illinois
2. Compare the best Illinois deals from top comparison engines
3. Book your Illinois flight at the cheapest price
These economy flights were found on FlightsFinder from UK to Illinois in the last few days. Prices subject to availability.
These economy flights were found on FlightsFinder from UK to Illinois in the last few days. Prices subject to availability.
According to our data, January is on average the cheapest time to book flights to Illinois.
You can get flights from £311 return.
According to our data, July is on average the most expensive time to book flights to Illinois.
A return flight could set you back more than £436.
Illinois, known as the "Land of Lincoln," is a vibrant state in the heart of the Midwest, offering a diverse range of experiences for visitors. From the iconic skyline of Chicago with its towering skyscrapers and cultural attractions, to the charming small towns scattered throughout the state, Illinois blends urban excitement with rural charm. Explore the picturesque vineyards of the Shawnee Hills Wine Trail, wander through the historic neighborhoods of Springfield, or take in a show at one of the many theaters in the state. With its rich history, dynamic cities, and scenic landscapes, Illinois promises a memorable adventure for travelers of all interests.
A good price for a flight to Chicago is £280 - £342.
Some popular airports near the city of Illinois include O'Hare International Airport (ORD), Midway International Airport (MDW), and Chicago Rockford International Airport (RFD).
The flight to Illinois (CHI) is roughly 9 hours 15 minutes and 3,942 miles (6,344 kilometres) from London, England UK - Heathrow International Airport (LHR).
The best way is to compare flights to Illinois from leading comparison sites using our search engine dashboard.
Yes, there are direct flights to Illinois.
Here is the average weather forecast in Illinois by month:
• Jan: -0°C
• Feb: 2°C
• Mar: 8°C
• Apr: 15°C
• May: 21°C
• Jun: 27°C
• Jul: 29°C
• Aug: 28°C
• Sep: 24°C
• Oct: 17°C
• Nov: 9°C
• Dec: 2°C
The main airport in Illinois, O'Hare International Airport, is approximately 17 miles from downtown Chicago.
Typically, flights are cheapest to Illinois 2 months before departure.
Studies show flights to Illinois are typically cheaper on Tuesdays and Wednesdays.
-16.1 °C
Fri, 5 Dec 2025
Average Temperature
-0°C
Jan
2°C
Feb
8°C
Mar
15°C
Apr
21°C
May
27°C
Jun
29°C
Jul
28°C
Aug
24°C
Sep
17°C
Oct
9°C
Nov
2°C
Dec
Select a City Below to see the Cheapest Flights to Illinois:
Chicago, Illinois | Peoria, Illinois | Moline, Illinois | Springfield, Illinois | Marion, Illinois | Bloomington, Illinois
London, England UK - Heathrow International Airport (LHR) to Illinois (CHI)
Distance:
3,942 miles (6,344 kilometres)
Average flight time (direct 9 hours 15 minutes)
London, England UK - London Gatwick International Airport (LGW) to Illinois (CHI)
Distance:
3,963 miles (6,378 kilometres)
Average flight time (direct 9 hours 18 minutes)
Manchester, England UK - Manchester Airport (MAN) to Illinois (CHI)
Distance:
3,815 miles (6,140 kilometres)
Average flight time (direct 8 hours 58 minutes)
London, England UK - London North East - Stansted International Airport (STN) to Illinois (CHI)
Distance:
3,955 miles (6,365 kilometres)
Average flight time (direct 9 hours 17 minutes)
London, England UK - London North, Luton International Airport (LTN) to Illinois (CHI)
Distance:
3,933 miles (6,329 kilometres)
Average flight time (direct 9 hours 14 minutes)
Edinburgh, Scotland UK - Airport (EDI) to Illinois (CHI)
Distance:
3,702 miles (5,957 kilometres)
Average flight time (direct 8 hours 43 minutes)
Birmingham, England UK - Birmingham Airport (BHX) to Illinois (CHI)
Distance:
3,862 miles (6,216 kilometres)
Average flight time (direct 9 hours 4 minutes)
Bristol, UK - Bristol Airport (BRS) to Illinois (CHI)
Distance:
3,858 miles (6,209 kilometres)
Average flight time (direct 9 hours 4 minutes)
Glasgow, Scotland UK - Glasgow International Airport (GLA) to Illinois (CHI)
Distance:
3,666 miles (5,900 kilometres)
Average flight time (direct 8 hours 38 minutes)
Belfast, Ireland UK - Belfast International Airport (BFS) to Illinois (CHI)
Distance:
3,633 miles (5,846 kilometres)
Average flight time (direct 8 hours 34 minutes)
Newcastle, UK - Newcastle International Airport (NCL) to Illinois (CHI)
Distance:
3,787 miles (6,095 kilometres)
Average flight time (direct 8 hours 54 minutes)
London, England UK - Royal Docks - London City Airport (LCY) to Illinois (CHI)
Distance:
3,961 miles (6,374 kilometres)
Average flight time (direct 9 hours 18 minutes)
Liverpool, UK - John Lennon Airport (LPL) to Illinois (CHI)
Distance:
3,795 miles (6,107 kilometres)
Average flight time (direct 8 hours 55 minutes)
Nottingham, UK - East Midlands Airport (EMA) to Illinois (CHI)
Distance:
3,867 miles (6,223 kilometres)
Average flight time (direct 9 hours 5 minutes)
Leeds, UK - Leeds/Bradford Airport (LBA) to Illinois (CHI)
Distance:
3,823 miles (6,152 kilometres)
Average flight time (direct 8 hours 59 minutes)
Aberdeen, Scotland UK - Dyce Airport (ABZ) to Illinois (CHI)
Distance:
3,709 miles (5,969 kilometres)
Average flight time (direct 8 hours 44 minutes)
Belfast, Ireland UK - George Best City Apt Airport (BHD) to Illinois (CHI)
Distance:
3,646 miles (5,868 kilometres)
Average flight time (direct 8 hours 36 minutes)
London, England UK - London South, Southend Airport (SEN) to Illinois (CHI)
Distance:
3,983 miles (6,410 kilometres)
Average flight time (direct 9 hours 21 minutes)
Southampton, UK - Southampton Airport (SOU) to Illinois (CHI)
Distance:
3,924 miles (6,316 kilometres)
Average flight time (direct 9 hours 13 minutes)
Jersey, UK - Jersey Airport (JER) to Illinois (CHI)
Distance:
3,948 miles (6,353 kilometres)
Average flight time (direct 9 hours 16 minutes)
Cardiff, Wales - UK - Cardiff Airport (CWL) to Illinois (CHI)
Distance:
3,834 miles (6,170 kilometres)
Average flight time (direct 9 hours 1 minute)
Doncaster, UK - Sheffield/ Robin Hood Airport (DSA) to Illinois (CHI)
Distance:
3,859 miles (6,210 kilometres)
Average flight time (direct 9 hours 4 minutes)
From London (LGW), UK to Chicago, United States (MDW): £311
Depart: 22 Jan 2026 · Return: 26 Jan 2026 Price found 05 Dec 2025, 03:43
From Edinburgh (EDI), UK to Chicago, United States (ORD): £350
Depart: 22 Jan 2026 · Return: 25 Jan 2026 Price found 04 Dec 2025, 18:43
From Manchester (MAN), UK to Chicago, United States (MDW): £353
Depart: 26 Jan 2026 · Return: 14 Apr 2026 Price found 03 Dec 2025, 21:26
From Birmingham (BHX), UK to Chicago, United States (ORD): £370
Depart: 06 Feb 2026 · Return: 09 Feb 2026 Price found 02 Dec 2025, 19:13
From Leeds (LBA), UK to Chicago, United States (ORD): £376
Depart: 15 Jan 2026 · Return: 22 Jan 2026 Price found 03 Dec 2025, 07:32
From Nottingham (EMA), UK to Chicago, United States (ORD): £378
Depart: 23 Dec 2025 · Return: 30 Dec 2025 Price found 01 Dec 2025, 13:17
From Bristol (BRS), UK to Chicago, United States (ORD): £386
Depart: 15 Jan 2026 · Return: 23 Jan 2026 Price found 02 Dec 2025, 09:32
From Glasgow (GLA), UK to Chicago, United States (ORD): £387
Depart: 16 Jan 2026 · Return: 23 Jan 2026 Price found 02 Dec 2025, 11:43
From Liverpool (LPL), UK to Chicago, United States (ORD): £388
Depart: 17 Feb 2026 · Return: 25 Feb 2026 Price found 02 Dec 2025, 01:35
From Newcastle (NCL), UK to Chicago, United States (ORD): £388
Depart: 16 Jan 2026 · Return: 23 Jan 2026 Price found 02 Dec 2025, 11:53
From Belfast (BFS), UK to Chicago, United States (ORD): £400
Depart: 15 Jan 2026 · Return: 29 Jan 2026 Price found 03 Dec 2025, 19:29
From Cardiff (CWL), UK to Chicago, United States (ORD): £443
Depart: 04 Feb 2026 · Return: 15 Feb 2026 Price found 03 Dec 2025, 04:45
From Aberdeen (ABZ), UK to Chicago, United States (ORD): £456
Depart: 19 Jan 2026 · Return: 26 Jan 2026 Price found 05 Dec 2025, 01:17
From Southampton (SOU), UK to Chicago, United States (ORD): £463
Depart: 11 Jan 2026 · Return: 18 Jan 2026 Price found 02 Dec 2025, 21:55
From London (LHR), UK to Chicago, United States (ORD): £470
Depart: 17 Jan 2026 · Return: 01 Feb 2026 Price found 01 Dec 2025, 21:21
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