How long is the flight from London to Illinois?

There are many flights that can get you from London to Illinois in 13h 20m. Fly via SWISS, British Airways, or Scandinavian Airlines to get the fastest option. Airlines will cover a distance of 3957 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £312. Users have also found prices from £316 and £324 on Aer Lingus and Austrian Airlines, 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).

What are the most popular routes from London to Illinois?

While some choose either London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl, London Heathrow - Chicago O'Hare Intl is the most popular route from London to Illinois.

What are the cheapest flights from London to Illinois?

Looking for the cheapest flight from London to Illinois? While on average our users pay £1,755, our data indicates the cheapest price to be £416. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £279.

What are the most reliable airlines from London to Illinois?

Before booking your flight to Illinois from London, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).

What are the most popular airlines that fly from London to Illinois?

When booking a flight from London to Illinois, you may want to consider flying on British Airways, Icelandair or Lufthansa as they are the most popular for this route.

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

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

How can I find direct flights from London to Illinois?

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

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

Yes. Cheapflights offers flight deals from London 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.

£315+ Cheap Flights from London to Illinois

Cheap flight deals from London to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Illinois
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Fri 13/1109:15 -

1 stop13h 00m

Mon 23/1118:50 -

1 stop12h 00m

Deal found 21/9£536

Fri 2/1013:25 -

1 stop11h 50m

Mon 5/1021:00 -

1 stop12h 00m

Deal found 21/9£536

Sat 31/1006:00 -

1 stop14h 00m

Wed 4/1117:45 -

Nonstop8h 10m

Deal found 21/9£537

Mon 19/1012:40 -

1 stop12h 35m

Thu 29/1016:55 -

1 stop10h 35m

Deal found 21/9£537

Wed 30/921:25 -

1 stop26h 50m

Sun 25/1019:30 -

1 stop10h 20m

Deal found 21/9£537

Fri 20/1109:30 -

1 stop16h 35m

Wed 2/1215:45 -

Nonstop8h 10m

Deal found 21/9£538

Thu 5/1115:05 -

3 stops30h 25m

Thu 12/1118:30 -

2 stops15h 45m

Deal found 21/9£538

Mon 2/1106:35 -

1 stop13h 35m

Mon 16/1116:10 -

1 stop13h 05m

Deal found 21/9£539

Sat 31/1007:45 -

1 stop12h 25m

Thu 5/1115:55 -

1 stop10h 40m

Deal found 18/9£540

Sun 22/1109:05 -

1 stop34h 55m

Wed 2/1215:45 -

Nonstop8h 10m

Deal found 21/9£540

Fri 30/1011:55 -

2 stops25h 51m

Wed 11/1119:28 -

3 stops33h 27m

Deal found 19/9£540

Fri 20/1106:50 -

1 stop13h 20m

Mon 30/1120:05 -

1 stop10h 35m

Deal found 20/9£540

Best flights from London to Illinois
Discover carefully curated flight deals from London to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Mon 26/1006:10 -

1 stop14h 00m

Sat 31/1016:55 -

1 stop10h 10m

Deal found 16/9£544

Tue 17/1119:05 -

1 stop23h 35m

Wed 13/116:10 -

1 stop14h 40m

Deal found 19/9£546

Wed 2/1206:50 -

1 stop13h 20m

Tue 8/1220:05 -

1 stop10h 35m

Deal found 19/9£561

Thu 28/106:40 -

1 stop16h 05m

Sun 31/119:15 -

2 stops17h 35m

Deal found 16/9£564

Thu 19/1110:25 -

Nonstop9h 20m

Mon 23/1115:45 -

Nonstop8h 10m

Deal found 18/9£570

Wed 14/1011:05 -

Nonstop9h 05m

Tue 24/1115:45 -

Nonstop8h 10m

Deal found 16/9£570

Sat 21/1106:30 -

2 stops16h 09m

Wed 2/1211:28 -

1 stop14h 22m

Deal found 18/9£584

Thu 19/1108:40 -

2 stops15h 24m

Mon 23/1113:05 -

1 stop12h 45m

Deal found 18/9£584

Thu 15/1008:30 -

2 stops16h 11m

Wed 21/1008:55 -

2 stops15h 35m

Deal found 21/9£684

Thu 17/1216:00 -

1 stop29h 30m

Sun 27/1220:10 -

2 stops42h 25m

Deal found 21/9£687

Wed 7/1008:25 -

1 stop12h 05m

Thu 15/1016:15 -

1 stop10h 35m

Deal found 20/9£692

Thu 15/1013:10 -

1 stop13h 47m

Tue 20/1021:35 -

Nonstop8h 00m

Deal found 19/9£701

Wed 14/1017:45 -

1 stop21h 55m

Tue 24/1120:15 -

1 stop38h 05m

Deal found 16/9£714

Sat 7/1109:30 -

1 stop14h 50m

Sat 14/1115:55 -

1 stop10h 10m

Deal found 18/9£560

Mon 1/319:05 -

2 stops23h 05m

Mon 8/316:10 -

1 stop14h 40m

Deal found 19/9£574

Tue 20/1008:45 -

1 stop13h 10m

Tue 17/1115:45 -

Nonstop8h 10m

Deal found 20/9£575

Tue 20/1009:55 -

2 stops36h 15m

Sat 24/1019:15 -

1 stop17h 25m

Deal found 16/9£581

Wed 7/1012:20 -

1 stop15h 10m

Tue 13/1016:55 -

1 stop11h 55m

Deal found 20/9£584

Wed 4/1106:30 -

2 stops17h 30m

Sun 29/1113:05 -

1 stop13h 55m

Deal found 18/9£584

Thu 12/1108:40 -

2 stops15h 24m

Sun 15/1109:30 -

2 stops15h 20m

Deal found 19/9£584

Wed 14/1010:25 -

2 stops18h 08m

Wed 21/1010:59 -

2 stops16h 26m

Deal found 21/9£1,222

Mon 2/1106:15 -

1 stop14h 40m

Mon 16/1115:55 -

2 stops15h 50m

Deal found 21/9£568

Thu 28/109:15 -

1 stop13h 00m

Sun 31/118:50 -

1 stop12h 00m

Deal found 16/9£579

Wed 7/1012:20 -

1 stop15h 10m

Mon 12/1016:55 -

1 stop11h 55m

Deal found 20/9£584

Wed 7/1006:30 -

2 stops17h 30m

Wed 21/1006:04 -

1 stop18h 21m

Deal found 19/9£584

Thu 28/112:40 -

1 stop15h 30m

Sun 31/112:30 -

1 stop12h 35m

Deal found 16/9£587

Wed 21/1006:40 -

1 stop15h 30m

Wed 18/1119:15 -

2 stops15h 45m

Deal found 20/9£590

Wed 30/909:30 -

1 stop15h 11m

Sat 31/1013:00 -

1 stop12h 40m

Deal found 18/9£666

Thu 22/1008:45 -

1 stop13h 10m

Mon 26/1016:45 -

Nonstop8h 10m

Deal found 21/9£631

Mon 2/1109:15 -

2 stops15h 00m

Mon 16/1116:10 -

1 stop14h 40m

Deal found 17/9£584

Find flight deals from London to Illinois

Round-trip from	£536
One-way from	£315
Popular in	August
Cheapest in	February
Average price	£623
Good round-trip deal	£615 or less
Good one-way deal	£532 or less

SWISS
13/11-23/11
2 total stops
25h 00m total
London to Illinois

Search Deals

7/11-31/12
3 total stops
56h 00m total
London 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 London (LON) to Illinois.

Search Deals

Price to beat on a one-way flight from London (LON) to Illinois.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

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

£358

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Thu 15/10

14:00-23:13

1 stop15h 13m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£365

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Sun 24/1

20:05-16:15

1 stop26h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£366

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Tue 13/10

20:05-19:15

2 stops29h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£374

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 30/9

21:50-00:45

3 stops56h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£381

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Mon 5/10

07:25-00:23

3 stops46h 58m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£383

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Tue 27/10

12:15-18:20

3 stops59h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£385

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 1/12

06:50-20:06

2 stops19h 16m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£395

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Sun 29/11

09:30-13:10

1 stop33h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£407

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 4/11

06:30-13:45

1 stop13h 15m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£409

Flights are sorted by cheapest return flights first.

Deals found on 19/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Illinois

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

LHR-ORD

LHR-STL

LCY-ORD

LGW-ORD

LTN-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 London to Illinois

LON-USIL

LHR-ORD

LHR-STL

LCY-ORD

LGW-ORD

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

Currently, February is the cheapest month in which you can book a flight from London to Illinois (average of £483). Flying from London to Illinois in August is currently the most expensive (average of £796). 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 LON to IL?

When flying from London 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 London to Illinois

The most flights from LON to USIL are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 on average).

How much does it cost for a return flight from London to Illinois?

Airfare is typical for this route at the moment.

London to Illinois flights typically cost between £535 and £714 in November.
The cheapest return price found within the last 5 days was £536 on SWISS (13 Nov–23 Nov).

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

The best time to book flights from London to Illinois is 62 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.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from London to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,222 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

10,222 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Aer Lingus

7.3

Good

1,781 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Icelandair

6.9

Okay

747 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Lufthansa

6.8

Okay

8,238 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,226 reviews

United Airlines

7.4

Good

10,222 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 London to Illinois?
There are many flights that can get you from London to Illinois in 13h 20m. Fly via SWISS, British Airways, or Scandinavian Airlines to get the fastest option. Airlines will cover a distance of 3957 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from London to Illinois one-way?
For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £312. Users have also found prices from £316 and £324 on Aer Lingus and Austrian Airlines, respectively.
What are the most popular routes from London to Illinois?
While some choose either London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl, London Heathrow - Chicago O'Hare Intl is the most popular route from London to Illinois.
What are the most reliable airlines from London to Illinois?
Before booking your flight to Illinois from London, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).
What are the cheapest flights from London to Illinois?
Looking for the cheapest flight from London to Illinois? While on average our users pay £1,755, our data indicates the cheapest price to be £416. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £279.
Can I find deals for flights from London to Illinois that include hotel bookings?
Yes. In addition to deals on London to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Illinois.
Can I find deals for business class flights from London to Illinois?
Yes. Cheapflights offers flight deals from London 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 London to Illinois?
Currently, February is the cheapest month in which you can book a flight from London to Illinois (average of £483). Flying from London to Illinois in August is currently the most expensive (average of £796). 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

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Alternative routes for London to Illinois

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Gatwick to Las Vegas flights

Gatwick to San Francisco flights

London City to San Francisco flights

Luton to LaGuardia flights

Top 10 airlines flying from London to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£212	Average£652	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£356	Average£513	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£385	Average£685	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Scandinavian Airlines	Cheapest£388	Average£547	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£389	Average£583	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£396	Average£668	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£419	Average£692	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£429	Average£714	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£431	Average£766	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£434	Average£772	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London 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 London today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from London to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from London today and book when prices fit your budget.

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 London to Illinois from £315

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Illinois

Cheapest flights from London to IllinoisExplore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from London to IllinoisDiscover carefully curated flight deals from London to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Discover carefully curated flight deals from London to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Direct flights from London to IllinoisExplore direct flight options from London to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Explore direct flight options from London to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Last-minute flights from London to IllinoisDiscover last-minute flight deals from London to Illinois. Data last updated 21 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Illinois. Data last updated 21 September 2026 and is based on user searches.

One-way flights from London to IllinoisSearch for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Find flight deals from London 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 London to Illinois that are best for you.

Best time to book a flight from London to Illinois

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

Cheapflights Insights

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

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

Find hourly flight availability from London 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 21 September 2026.

When flying from London 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 London to Illinois

Explore weekly flight availability from London to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 September 2026.

The most flights from LON to USIL are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 on average).

How much does it cost for a return flight from London to Illinois?

Airfare is typical for this route at the moment.

London to Illinois flights typically cost between £535 and £714 in November.The cheapest return price found within the last 5 days was £536 on SWISS (13 Nov–23 Nov).

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

The best time to book flights from London to Illinois is 62 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.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from London to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Illinois?

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

What are the most popular routes from London to Illinois?

What are the most reliable airlines from London to Illinois?

What are the cheapest flights from London to Illinois?

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

How can I find direct flights from London to Illinois?

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

What is the cheapest month to book a flight from London 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.

Alternative routes for London 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 London to Illinois by cabin class

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

London and Illinois flights

Browse other London and Illinois flight options. Last updated on 21 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

London to Illinois flights

Consider these flights travelling from London to Illinois.

Top 10 airlines flying from London to Illinois

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Cheapest flights from London to Illinois
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from London to Illinois
Discover carefully curated flight deals from London to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Direct flights from London to Illinois
Explore direct flight options from London to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 September 2026.

Last-minute flights from London to Illinois
Discover last-minute flight deals from London to Illinois. Data last updated 21 September 2026 and is based on user searches.

One-way flights from London to Illinois
Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

London to Illinois flights typically cost between £535 and £714 in November.
The cheapest return price found within the last 5 days was £536 on SWISS (13 Nov–23 Nov).