How long is the flight from United Kingdom to Illinois?

A quick flight from United Kingdom to Illinois can take about 11h 10m. TAP AIR PORTUGAL provides one of the quickest options available for as low as £544. The distance between United Kingdom and Illinois is about 3939 mi. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to fly from United Kingdom to Illinois one-way?

£291 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on JetBlue and Aer Lingus, with prices starting from £307 and £312, respectively.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

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).

Can I find deals for flights from United Kingdom to Illinois that include hotel bookings?

Yes. In addition to deals on United Kingdom to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from United Kingdom to Illinois?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Illinois.

Can I find deals for business class flights from United Kingdom to Illinois?

Yes. Cheapflights offers flight deals from United Kingdom to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£158+ Cheap Flights from the United Kingdom to Illinois

Cheap flight deals from United Kingdom to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from United Kingdom to Illinois
Explore the most affordable flight options available from United Kingdom to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Thu 15/1021:10 -

2 stops25h 00m

Sun 25/1020:15 -

2 stops16h 30m

Deal found 26/8£429

Wed 18/1106:00 -

2 stops17h 20m

Sun 29/1118:30 -

2 stops21h 05m

Deal found 24/8£439

Wed 7/1007:20 -

2 stops20h 05m

Mon 19/1019:25 -

2 stops16h 05m

Deal found 26/8£460

Thu 15/1013:00 -

2 stops33h 10m

Thu 29/1020:15 -

3 stops21h 50m

Deal found 26/8£461

Thu 15/1013:00 -

2 stops33h 10m

Thu 22/1019:15 -

3 stops31h 15m

Deal found 23/8£467

Tue 8/912:10 -

1 stop33h 45m

Thu 10/914:30 -

1 stop10h 25m

Deal found 22/8£469

Wed 14/1008:50 -

1 stop16h 25m

Sun 18/1015:45 -

1 stop10h 10m

Deal found 22/8£469

Sun 20/909:00 -

1 stop16h 15m

Sun 27/915:45 -

1 stop13h 40m

Deal found 23/8£469

Wed 18/1107:15 -

1 stop17h 10m

Tue 24/1120:10 -

1 stop19h 40m

Deal found 22/8£469

Wed 14/1019:50 -

1 stop22h 50m

Sun 18/1018:00 -

1 stop22h 55m

Deal found 22/8£471

Thu 17/906:30 -

1 stop13h 30m

Mon 21/915:45 -

1 stop10h 05m

Deal found 23/8£471

Wed 23/916:25 -

1 stop26h 15m

Wed 2/1219:00 -

1 stop14h 05m

Deal found 24/8£471

Best flights from United Kingdom to Illinois
Discover carefully curated flight deals from United Kingdom to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Tue 22/919:50 -

1 stop26h 10m

Wed 21/1018:00 -

1 stop17h 45m

Deal found 22/8£477

Mon 12/1019:45 -

2 stops26h 25m

Thu 22/1019:15 -

2 stops17h 50m

Deal found 22/8£485

Thu 5/1111:55 -

1 stop11h 25m

Mon 9/1118:30 -

1 stop10h 15m

Deal found 26/8£521

Wed 9/908:50 -

1 stop11h 10m

Wed 23/922:25 -

Nonstop7h 50m

Deal found 26/8£544

Thu 12/1112:55 -

2 stops33h 50m

Fri 27/1119:15 -

2 stops18h 25m

Deal found 24/8£553

Tue 22/906:50 -

1 stop11h 10m

Wed 21/1021:30 -

Nonstop8h 25m

Deal found 24/8£556

Wed 7/1006:30 -

1 stop12h 55m

Wed 14/1012:20 -

1 stop12h 55m

Deal found 23/8£632

Mon 7/1210:00 -

2 stops18h 55m

Thu 14/110:35 -

1 stop15h 15m

Deal found 25/8£635

Tue 6/1006:15 -

2 stops15h 59m

Tue 13/1009:29 -

2 stops15h 16m

Deal found 22/8£641

Thu 1/1009:15 -

1 stop12h 40m

Mon 5/1015:50 -

1 stop14h 45m

Deal found 23/8£646

Tue 15/1219:25 -

1 stop24h 35m

Tue 9/217:45 -

Nonstop8h 10m

Deal found 24/8£652

Mon 15/205:40 -

1 stop14h 45m

Wed 31/316:20 -

1 stop10h 10m

Deal found 24/8£658

Thu 8/1017:35 -

1 stop22h 05m

Tue 13/1011:25 -

1 stop23h 25m

Deal found 26/8£668

Sun 27/910:45 -

2 stops32h 18m

Fri 9/1005:00 -

2 stops23h 40m

Deal found 26/8£687

Mon 21/912:25 -

3 stops33h 45m

Mon 5/1019:15 -

2 stops21h 35m

Deal found 22/8£492

Tue 22/916:25 -

1 stop29h 35m

Wed 21/1018:00 -

2 stops20h 30m

Deal found 22/8£527

Wed 21/1006:15 -

1 stop13h 45m

Thu 29/1021:10 -

1 stop9h 50m

Deal found 23/8£495

Thu 5/1119:15 -

1 stop27h 30m

Mon 9/1119:15 -

2 stops35h 00m

Deal found 26/8£558

Sat 7/1109:30 -

1 stop34h 15m

Sat 21/1116:05 -

1 stop10h 25m

Deal found 25/8£602

Thu 8/1018:40 -

1 stop27h 30m

Tue 13/1019:15 -

1 stop17h 15m

Deal found 24/8£571

Fri 15/121:35 -

2 stops47h 55m

Fri 22/120:10 -

1 stop13h 35m

Deal found 23/8£571

Tue 6/1014:45 -

Nonstop8h 50m

Tue 13/1020:50 -

Nonstop8h 00m

Deal found 22/8£629

Fri 25/1211:20 -

1 stop12h 00m

Thu 31/1218:30 -

1 stop9h 50m

Deal found 23/8£629

Fri 20/1109:00 -

1 stop15h 25m

Sun 29/1115:55 -

1 stop11h 15m

Deal found 22/8£523

Tue 17/1106:30 -

2 stops16h 09m

Tue 1/1211:28 -

1 stop14h 22m

Deal found 23/8£636

Tue 1/1211:20 -

1 stop12h 41m

Wed 9/1211:28 -

1 stop14h 22m

Deal found 23/8£650

Tue 13/1018:40 -

1 stop23h 55m

Wed 21/1019:05 -

1 stop16h 45m

Deal found 22/8£651

Wed 7/1010:50 -

1 stop28h 50m

Wed 14/1011:25 -

1 stop23h 15m

Deal found 23/8£669

Fri 9/1012:15 -

2 stops15h 06m

Fri 16/1011:35 -

2 stops13h 20m

Deal found 25/8£626

Tue 6/1007:05 -

2 stops15h 05m

Tue 13/1019:15 -

1 stop14h 45m

Deal found 22/8£575

Find flight deals from United Kingdom to Illinois

Round-trip from	£429
One-way from	£158
Popular in	August
Cheapest in	February
Average price	£719
Good round-trip deal	£600 or less
Good one-way deal	£512 or less

15/10-25/10
4 total stops
41h 30m total
United Kingdom to Illinois

Search Deals

4/12
1 total stop
32h 35m total
United Kingdom to Illinois

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£46 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from United Kingdom to Illinois.

Search Deals

Price to beat on a one-way flight from United Kingdom to Illinois.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 22/9

19:50-16:00

1 stop26h 10m

Chicago O'Hare Intl

Wed 21/10

18:00-17:45

1 stop17h 45m

£477

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Mon 12/10

19:45-16:10

2 stops26h 25m

Chicago O'Hare Intl

Thu 22/10

19:15-19:05

2 stops17h 50m

£485

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Mon 21/9

12:25-16:10

3 stops33h 45m

Chicago O'Hare Intl

Mon 5/10

19:15-22:50

2 stops21h 35m

£492

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 21/10

06:15-14:00

1 stop13h 45m

Chicago O'Hare Intl

Thu 29/10

21:10-12:00

1 stop9h 50m

£495

ManchesterChicago

MAN Manchester - ORD Chicago O'Hare Intl

MANORD

Manchester

Thu 5/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Mon 9/11

18:30-10:45

1 stop10h 15m

£521

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Fri 20/11

09:00-18:25

1 stop15h 25m

Chicago O'Hare Intl

Sun 29/11

15:55-09:10

1 stop11h 15m

£523

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Tue 22/9

16:25-16:00

1 stop29h 35m

Chicago O'Hare Intl

Wed 21/10

18:00-20:30

2 stops20h 30m

£527

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Wed 9/9

08:50-14:00

1 stop11h 10m

Chicago O'Hare Intl

Wed 23/9

22:25-12:15

Nonstop7h 50m

£544

ManchesterChicago

MAN Manchester - ORD Chicago O'Hare Intl

MANORD

Manchester

Thu 12/11

12:55-16:45

2 stops33h 50m

Chicago O'Hare Intl

Fri 27/11

19:15-19:40

2 stops18h 25m

£553

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 22/9

06:50-12:00

1 stop11h 10m

Chicago O'Hare Intl

Wed 21/10

21:30-11:55

Nonstop8h 25m

£556

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from United Kingdom to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from United Kingdom with our price prediction graph.

MAN-ORD

LHR-ORD

LCY-ORD

LHR-STL

EDI-ORD

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.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Illinois

GB0-USIL

MAN-ORD

LHR-ORD

LCY-ORD

LHR-STL

What is the cheapest month to book a flight from United Kingdom to Illinois?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of £476). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £772). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to IL?

When flying from United Kingdom to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Illinois

The most flights from GB0 to USIL are scheduled on a Tuesday (49 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (48 on average).

How far ahead should I book a flight from United Kingdom to Illinois?

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from the United Kingdom to Illinois, such as United Airlines,Aer Lingus, andIcelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

United Airlines

7.4

Good

10,128 reviews

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Aer Lingus

7.3

Good

1,729 reviews

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Icelandair

6.9

Okay

738 reviews

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Lufthansa

6.8

Okay

8,222 reviews

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,194 reviews

United Airlines

7.4

Good

10,128 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Related info for your journey

How long is the flight from United Kingdom to Illinois?
A quick flight from United Kingdom to Illinois can take about 11h 10m. TAP AIR PORTUGAL provides one of the quickest options available for as low as £544. The distance between United Kingdom and Illinois is about 3939 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from United Kingdom to Illinois one-way?
£291 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on JetBlue and Aer Lingus, with prices starting from £307 and £312, respectively.
Can I find deals for flights from United Kingdom to Illinois that include hotel bookings?
Yes. In addition to deals on United Kingdom to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from United Kingdom to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Illinois.
Can I find deals for business class flights from United Kingdom to Illinois?
Yes. Cheapflights offers flight deals from United Kingdom to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from United Kingdom to Illinois?
Currently, February is the cheapest month in which you can book a flight from United Kingdom to Illinois (average of £476). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £772). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Airlines

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Airlines flying to Illinois

Icelandair flights to Illinois

Aer Lingus flights to Illinois

Finnair flights to Illinois

Lufthansa flights to Illinois

British Airways flights to Illinoisfrom £464/person

Top 10 airlines flying from United Kingdom to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£35	Average£61	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
Icelandair	Cheapest£200	Average£552	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£298	Average£690	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Scandinavian Airlines	Cheapest£370	Average£490	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
JetBlue	Cheapest£378	Average£639	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
TAP AIR PORTUGAL	Cheapest£382	Average£567	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£389	Average£633	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£399	Average£764	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£400	Average£640	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£414	Average£737	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Fly with Cheapflights

How does Cheapflights help users find flights from United Kingdom to Illinois?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from United Kingdom today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from United Kingdom.

Can Cheapflights find flights from United Kingdom to Illinois with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from United Kingdom to Illinois, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from United Kingdom to Illinois become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from the United Kingdom to Illinois from £158

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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from United Kingdom to Illinois

Cheapest flights from United Kingdom to IllinoisExplore the most affordable flight options available from United Kingdom to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Explore the most affordable flight options available from United Kingdom to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from United Kingdom to IllinoisDiscover carefully curated flight deals from United Kingdom to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Discover carefully curated flight deals from United Kingdom to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Direct flights from United Kingdom to IllinoisExplore direct flight options from United Kingdom to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 August 2026.

Explore direct flight options from United Kingdom to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 August 2026.

Last-minute flights from United Kingdom to IllinoisDiscover last-minute flight deals from United Kingdom to Illinois. Data last updated 27 August 2026 and is based on user searches.

Discover last-minute flight deals from United Kingdom to Illinois. Data last updated 27 August 2026 and is based on user searches.

One-way flights from United Kingdom to IllinoisSearch for one-way flight options from United Kingdom to Illinois. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Search for one-way flight options from United Kingdom to Illinois. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Find flight deals from United Kingdom to Illinois

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Illinois that are best for you.

Best time to book a flight from United Kingdom to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from United Kingdom with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from United Kingdom to Illinois?

What is the cheapest time of day to fly from GB to IL?

Find hourly flight availability from United Kingdom to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 August 2026.

When flying from United Kingdom to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Illinois

The most flights from GB0 to USIL are scheduled on a Tuesday (49 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (48 on average).

How far ahead should I book a flight from United Kingdom to Illinois?

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from the United Kingdom to Illinois, such as United Airlines,Aer Lingus, andIcelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from United Kingdom to Illinois?

What are the cheapest airlines to fly from United Kingdom to Illinois one-way?

Can I find deals for flights from United Kingdom to Illinois that include hotel bookings?

How can I find direct flights from United Kingdom to Illinois?

Can I find deals for business class flights from United Kingdom to Illinois?

What is the cheapest month to book a flight from United Kingdom to Illinois?

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.

Airlines flying to Illinois

Alternative routes for United Kingdom to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Illinois by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from United Kingdom to Illinois by cabin class

Find flights from United Kingdom to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

United Kingdom and Illinois flights

Browse other United Kingdom and Illinois flight options. Last updated on 27 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Illinois

Find the right flight back to United Kingdom after your stay in Illinois

United Kingdom to Illinois flights

Consider these flights travelling from United Kingdom to Illinois.

Top 10 airlines flying from United Kingdom to Illinois

Fly with Cheapflights

How does Cheapflights help users find flights from United Kingdom to Illinois?

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Illinois?

Can Cheapflights find flights from United Kingdom to Illinois with no change fees?

Can Cheapflights notify me if prices for flights from United Kingdom to Illinois become cheaper?

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Travel Smart

Cheapest flights from United Kingdom to Illinois
Explore the most affordable flight options available from United Kingdom to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from United Kingdom to Illinois
Discover carefully curated flight deals from United Kingdom to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Direct flights from United Kingdom to Illinois
Explore direct flight options from United Kingdom to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 August 2026.

Last-minute flights from United Kingdom to Illinois
Discover last-minute flight deals from United Kingdom to Illinois. Data last updated 27 August 2026 and is based on user searches.

One-way flights from United Kingdom to Illinois
Search for one-way flight options from United Kingdom to Illinois. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.