How long is the flight from United Kingdom to Illinois?

A quick flight from United Kingdom to Illinois can take about 11h 25m. Icelandair provides one of the quickest options available for as low as £505. The distance between United Kingdom and Illinois is about 3812 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?

£212 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 £315 and £320, 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.

£296+ 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 30 September 2026.

Mon 23/1106:05 -

2 stops17h 15m

Sun 29/1118:30 -

2 stops21h 30m

Deal found 26/9£423

Wed 4/1106:30 -

2 stops16h 50m

Wed 11/1118:30 -

2 stops16h 10m

Deal found 29/9£434

Fri 20/1106:05 -

2 stops17h 15m

Tue 1/1218:30 -

2 stops21h 05m

Deal found 26/9£435

Wed 4/1108:35 -

2 stops14h 45m

Wed 11/1118:30 -

2 stops19h 00m

Deal found 26/9£456

Tue 10/1108:25 -

2 stops14h 55m

Tue 17/1118:30 -

2 stops12h 15m

Deal found 26/9£464

Tue 10/1108:30 -

2 stops14h 50m

Tue 17/1118:30 -

2 stops14h 45m

Deal found 26/9£466

Fri 20/1107:35 -

2 stops15h 45m

Tue 1/1218:30 -

2 stops12h 15m

Deal found 26/9£481

Tue 10/1108:30 -

2 stops14h 50m

Tue 17/1118:30 -

2 stops21h 05m

Deal found 26/9£484

Mon 26/1006:05 -

1 stop14h 05m

Mon 2/1115:55 -

1 stop9h 50m

Deal found 27/9£494

Wed 25/1109:55 -

2 stops34h 30m

Tue 5/118:30 -

1 stop9h 25m

Deal found 25/9£495

Thu 5/1108:10 -

1 stop16h 10m

Wed 11/1115:55 -

1 stop9h 40m

Deal found 28/9£498

Wed 28/1006:45 -

1 stop13h 25m

Thu 5/1115:55 -

1 stop11h 00m

Deal found 27/9£499

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 30 September 2026.

Thu 5/1111:55 -

1 stop11h 25m

Mon 9/1118:30 -

1 stop10h 15m

Deal found 27/9£505

Wed 2/1212:50 -

1 stop11h 30m

Tue 8/1215:55 -

1 stop11h 10m

Deal found 25/9£540

Sat 31/1008:45 -

1 stop15h 35m

Sat 14/1115:55 -

1 stop14h 10m

Deal found 25/9£545

Sat 21/1106:40 -

2 stops40h 05m

Sun 28/219:10 -

1 stop32h 10m

Deal found 25/9£546

Tue 10/1108:30 -

2 stops14h 50m

Tue 17/1118:30 -

3 stops33h 10m

Deal found 26/9£555

Fri 2/1006:50 -

1 stop11h 10m

Mon 5/1016:25 -

Nonstop8h 20m

Deal found 25/9£555

Wed 21/1005:55 -

1 stop14h 35m

Thu 5/1111:19 -

2 stops16h 26m

Deal found 25/9£573

Fri 30/1010:00 -

1 stop12h 15m

Thu 12/1106:23 -

2 stops20h 37m

Deal found 25/9£597

Wed 21/1006:15 -

2 stops16h 17m

Sun 25/1017:25 -

1 stop18h 30m

Deal found 26/9£597

Sun 8/1109:20 -

1 stop15h 57m

Thu 12/1113:00 -

1 stop11h 55m

Deal found 28/9£600

Tue 15/1216:35 -

1 stop28h 55m

Wed 30/1219:00 -

1 stop14h 05m

Deal found 28/9£605

Tue 24/1108:40 -

2 stops15h 35m

Sun 29/1121:35 -

2 stops14h 15m

Deal found 25/9£692

Tue 17/1108:50 -

1 stop11h 20m

Tue 1/1218:30 -

Nonstop8h 05m

Deal found 27/9£546

Fri 9/1006:50 -

1 stop11h 10m

Fri 16/1015:50 -

1 stop14h 35m

Deal found 28/9£556

Fri 13/1113:25 -

1 stop10h 55m

Mon 23/1120:05 -

1 stop14h 25m

Deal found 28/9£558

Sat 6/311:35 -

1 stop11h 45m

Tue 23/319:30 -

1 stop11h 55m

Deal found 27/9£564

Mon 23/1109:25 -

1 stop11h 00m

Sun 29/1117:05 -

2 stops14h 30m

Deal found 26/9£574

Wed 4/1109:25 -

1 stop11h 00m

Wed 11/1113:30 -

2 stops14h 15m

Deal found 26/9£574

Thu 12/1112:55 -

2 stops33h 50m

Wed 25/1119:10 -

1 stop17h 25m

Deal found 26/9£592

Thu 29/1010:00 -

1 stop12h 15m

Wed 11/1112:38 -

2 stops14h 22m

Deal found 28/9£598

Sat 31/1008:50 -

1 stop11h 20m

Fri 6/1120:05 -

1 stop11h 20m

Deal found 26/9£557

Thu 4/311:20 -

1 stop12h 00m

Mon 22/319:30 -

1 stop11h 50m

Deal found 27/9£570

Fri 13/1120:45 -

1 stop23h 40m

Mon 23/1114:44 -

2 stops13h 01m

Deal found 27/9£574

Sat 7/1109:25 -

2 stops17h 05m

Mon 23/1111:19 -

2 stops16h 26m

Deal found 26/9£577

Thu 8/1014:10 -

Nonstop9h 15m

Wed 21/1018:05 -

Nonstop8h 25m

Deal found 29/9£578

Thu 5/1119:15 -

1 stop27h 30m

Mon 9/1119:10 -

2 stops35h 05m

Deal found 24/9£602

Wed 7/1016:25 -

1 stop26h 15m

Wed 21/1018:00 -

1 stop33h 45m

Deal found 26/9£678

Fri 23/1006:15 -

1 stop14h 00m

Thu 29/1017:25 -

1 stop18h 30m

Deal found 25/9£679

Tue 10/1117:20 -

1 stop27h 05m

Tue 17/1110:30 -

2 stops17h 10m

Deal found 26/9£626

Wed 11/1120:45 -

1 stop23h 25m

Sat 21/1108:45 -

1 stop19h 15m

Deal found 27/9£570

Find flight deals from United Kingdom to Illinois

Round-trip from	£423
One-way from	£296
Popular in	August
Cheapest in	February
Average price	£628
Good round-trip deal	£593 or less
Good one-way deal	£573 or less

23/11-29/11
4 total stops
38h 45m total
United Kingdom to Illinois

Search Deals

28/2-31/12
2 total stops
17h 15m total
United Kingdom to Illinois

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£65 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

Newcastle upon TyneChicago

NCL Newcastle upon Tyne - ORD Chicago O'Hare Intl

NCLORD

Newcastle upon Tyne

Sun 7/3

06:25-16:45

2 stops40h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£351

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Mon 16/11

17:10-16:15

1 stop29h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£363

EdinburghChicago

EDI Edinburgh Turnhouse - ORD Chicago O'Hare Intl

EDIORD

Edinburgh Turnhouse

Mon 9/11

17:20-15:30

2 stops52h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£364

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Wed 18/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£372

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Thu 12/11

14:50-14:00

1 stop29h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£376

GlasgowChicago

GLA Glasgow Intl - ORD Chicago O'Hare Intl

GLAORD

Glasgow Intl

Wed 25/11

09:55-14:10

1 stop34h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£377

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Mon 9/11

18:40-12:40

1 stop24h 00m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£384

EdinburghChicago

EDI Edinburgh Turnhouse - ORD Chicago O'Hare Intl

EDIORD

Edinburgh Turnhouse

Mon 29/3

19:35-18:15

3 stops28h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£386

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Sun 1/11

12:35-08:46

1 stop26h 11m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£387

ManchesterChicago

MAN Manchester - ORD Chicago O'Hare Intl

MANORD

Manchester

Tue 13/10

20:10-12:40

3 stops46h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£391

Flights are sorted by cheapest return flights first.

Deals found on 29/9

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.

BHX-ORD

MAN-ORD

BRS-ORD

LHR-ORD

LPL-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

BHX-ORD

MAN-ORD

BRS-ORD

LHR-ORD

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 £506). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £812). 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 Monday (44 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (37 on average).

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

Booking 55 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 Scandinavian 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.

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

Scandinavian Airlines

7.4

Good

2,002 reviews

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

Aer Lingus

7.3

Good

1,801 reviews

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

Icelandair

6.9

Okay

757 reviews

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

Lufthansa

6.8

Okay

8,247 reviews

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

British Airways

6.7

Okay

8,243 reviews

Scandinavian Airlines

7.4

Good

2,002 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Robert,Jul 2026

CPH - SFO

First rate expereince.! We've never flown SAS before but will defintely fly it again.

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 25m. Icelandair provides one of the quickest options available for as low as £505. The distance between United Kingdom and Illinois is about 3812 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?
£212 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 £315 and £320, 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 £506). Flying from United Kingdom to Illinois in August is currently the most expensive (average of £812). 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 Illinois

Top 10 airlines flying from United Kingdom to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£30	Average£62	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
Icelandair	Cheapest£206	Average£581	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£215	Average£738	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Turkish Airlines	Cheapest£353	Average£703	FlexibilityNo cancel fee	On-time77%	Search Turkish Airlines flights
JetBlue	Cheapest£389	Average£657	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Scandinavian Airlines	Cheapest£391	Average£544	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£393	Average£590	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£412	Average£799	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£426	Average£660	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£434	Average£730	FlexibilityNo cancel fee	On-time76%	Search Finnair 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.

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.

Cheap flights from the United Kingdom to Illinois from £296

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/2. 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 30 September 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 30 September 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 30 September 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 30 September 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 30 September 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 30 September 2026.

Last-minute flights from United Kingdom to IllinoisDiscover last-minute flight deals from United Kingdom to Illinois. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from United Kingdom to Illinois. Data last updated 30 September 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 30 September 2026.

Search for one-way flight options from United Kingdom to Illinois. Find affordable one-way fares based on user searches. Data last updated 30 September 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 30 September 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 Monday (44 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (37 on average).

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

Booking 55 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 Scandinavian 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 30 September 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?

100% Free

Book with Flexibility

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 30 September 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 30 September 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 30 September 2026.

Last-minute flights from United Kingdom to Illinois
Discover last-minute flight deals from United Kingdom to Illinois. Data last updated 30 September 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 30 September 2026.