How many flights depart from London to Illinois on average per day?

The number of flights available between London and Illinois is 54 per day as of June 2026. The most frequent departure time is 11:00AM, with 51% of daily flights leaving in the afternoon.

What airlines fly to Illinois?

British Airways, American Airlines and Lufthansa are the top three most popular airlines that fly to Illinois from London according to our data. British Airways is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to Illinois?

Lufthansa, United Airlines, and Delta are the most popular carriers operating from London to Illinois

How many flights depart from London to Illinois on average per week?

The number of flights available between London and Illinois is 384 per week as of June 2026. The most frequent departure day is Tue, with 15% of weekly flights leaving on this day.

When did momondo last update prices for flights from London to Illinois?

Prices for flights from London to Illinois refresh daily.

How many operators does momondo search for flights from London to Illinois?

The number of operators available for flights from London to Illinois is 7 as of June 2026.

How old do you have to be to fly from London to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$370 Cheap Flights from London to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 6:15 pm

LGW

ORD

32h 35m

1 stop

7:25 pm - 11:45 am

ORD

LGW

10h 20m

1 stop

$758Icelandair

Sun, Jul 5 - Sat, Jul 11

1:05 pm - 10:16 am

LHR

ORD

27h 11m

3 stops

9:50 am - 11:55 am

ORD

LHR

20h 05m

2 stops

$758Multiple Airlines

Wed, Jul 8 - Wed, Jul 15

8:30 am - 8:12 pm

LHR

ORD

17h 42m

2 stops

1:55 pm - 8:35 am

ORD

LHR

12h 40m

1 stop

$759Air Canada

Wed, Sep 16 - Wed, Sep 23

7:05 am - 4:10 pm

LHR

ORD

15h 05m

2 stops

7:15 pm - 6:50 pm

ORD

LHR

17h 35m

2 stops

$760Scandinavian Airlines

Wed, Oct 7 - Wed, Oct 21

7:05 am - 4:10 pm

LHR

ORD

15h 05m

2 stops

8:15 pm - 9:35 am

ORD

LHR

32h 20m

2 stops

$761Scandinavian Airlines

Fri, Oct 9 - Fri, Oct 30

8:30 am - 6:43 pm

LHR

ORD

16h 13m

2 stops

11:05 am - 6:30 am

ORD

LHR

13h 25m

1 stop

$762Air Canada

Wed, Sep 2 - Wed, Sep 9

11:10 am - 1:50 pm

LHR

ORD

8h 40mnonstop

10:35 pm - 12:15 pm

ORD

LHR

7h 40mnonstop

$767British Airways

Tue, Sep 1 - Fri, Sep 18

6:50 am - 2:00 pm

LCY

ORD

13h 10m

1 stop

8:10 pm - 9:25 pm

ORD

LCY

19h 15m

1 stop

$779British Airways

Tue, Dec 1 - Sat, Dec 5

9:15 am - 9:26 pm

LCY

STL

42h 11m

2 stops

1:13 pm - 5:55 pm

STL

LCY

22h 42m

2 stops

$1,061Lufthansa

Tue, Jul 14 - Mon, Jul 27

9:15 am - 9:26 pm

LCY

STL

18h 11m

2 stops

1:27 pm - 9:15 am

STL

LCY

13h 48m

2 stops

$1,123Lufthansa

Fri, Jul 10 - Tue, Dec 15

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British Airways flights from London to Illinois

Our best British Airways deals on London to Illinois flight tickets

British Airways

Sep 1

LHR11:10 amLondon Heathrow

8h 40m

ORD1:50 pmChicago O'Hare Intl

Sep 18

ORD10:35 pmChicago O'Hare Intl

7h 40m

LHR12:15 pmLondon Heathrow

$767

British Airways

Sep 10

LHR11:10 amLondon Heathrow

8h 40m

ORD1:50 pmChicago O'Hare Intl

Sep 16

ORD9:00 pmChicago O'Hare Intl

7h 50m

LHR10:50 amLondon Heathrow

$769

British Airways

Dec 1

LCY6:50 amLondon City

13h 10m

1 stop

ORD2:00 pmChicago O'Hare Intl

Dec 5

ORD8:10 pmChicago O'Hare Intl

19h 15m

1 stop

LCY9:25 pmLondon City

$779

American Airlines flights from London to Illinois

Our best American Airlines deals on London to Illinois flight tickets

American Airlines

Jun 22

LHR9:45 amLondon Heathrow

8h 40m

ORD12:25 pmChicago O'Hare Intl

Jun 28

ORD1:24 pmChicago O'Hare Intl

14h 16m

1 stop

LHR9:40 amLondon Heathrow

$796

American Airlines

Jun 25

LHR9:45 amLondon Heathrow

8h 40m

ORD12:25 pmChicago O'Hare Intl

Jun 29

ORD1:24 pmChicago O'Hare Intl

14h 16m

1 stop

LHR9:40 amLondon Heathrow

$797

American Airlines

Jun 25

LHR2:45 pmLondon Heathrow

8h 50m

ORD5:35 pmChicago O'Hare Intl

Jun 30

ORD1:24 pmChicago O'Hare Intl

14h 16m

1 stop

LHR9:40 amLondon Heathrow

$798

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 7/5

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

Sat 7/11

7:25 pm-11:45 am

1 stop10h 20m

$758

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 7/8

1:05 pm-10:16 am

3 stops27h 11m

Chicago O'Hare Intl

Wed 7/15

9:50 am-11:55 am

2 stops20h 05m

$758

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/16

8:30 am-8:12 pm

2 stops17h 42m

Chicago O'Hare Intl

Wed 9/23

1:55 pm-8:35 am

1 stop12h 40m

$759

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/7

7:05 am-4:10 pm

2 stops15h 05m

Chicago O'Hare Intl

Wed 10/21

7:15 pm-6:50 pm

2 stops17h 35m

$760

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 10/9

7:05 am-4:10 pm

2 stops15h 05m

Chicago O'Hare Intl

Fri 10/30

8:15 pm-9:35 am

2 stops32h 20m

$761

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/2

8:30 am-6:43 pm

2 stops16h 13m

Chicago O'Hare Intl

Wed 9/9

11:05 am-6:30 am

1 stop13h 25m

$762

Quickest round-trip

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 9/1

11:10 am-1:50 pm

Nonstop8h 40m

Chicago O'Hare Intl

Fri 9/18

10:35 pm-12:15 pm

Nonstop7h 40m

$767

LondonChicago

LCY - ORD

LCYORD

London City

Tue 12/1

6:50 am-2:00 pm

1 stop13h 10m

Chicago O'Hare Intl

Sat 12/5

8:10 pm-9:25 pm

1 stop19h 15m

$779

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 7/14

9:15 am-9:26 pm

2 stops42h 11m

Lambert-St Louis

Mon 7/27

1:13 pm-5:55 pm

2 stops22h 42m

$1,061

LondonSt. Louis

LCY - STL

LCYSTL

London City

Fri 7/10

9:15 am-9:26 pm

2 stops18h 11m

Lambert-St Louis

Tue 12/15

1:27 pm-9:15 am

2 stops13h 48m

$1,123

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from London is in September. Flight prices, which tend to average around $589, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $683.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from London to Illinois is on a Wednesday when prices can be found for as low as $864. Flights from London to Illinois on a Saturday will generally be more expensive and average around $993. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from London to Illinois during this time can be as low as $900. Flights in the afternoon are often more expensive with an average ticket price of $992.

What is the cheapest London to Illinois flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $813 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from London for as low as $698 on momondo.

What cabin class options are available on London to Illinois flights?

There are 4 cabin classes available to choose from on London to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Illinois flights?

You could potentially save up to 4% on your flight if you consider stops on a London to Illinois flight.

Cheap London to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Illinois

Best Price Found	$668
Fastest flight time	8h 40m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from London in the past 72 hours is $668. The best round-trip flight deal from London to Illinois found on momondo in the last 72 hours is $980.

The fastest flight from London to Illinois takes 8h 40m

Direct flights go from London to Illinois every day.

There are 98 airports in Illinois. From London there are direct flights to Chicago O'Hare Intl (ORD), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from London to Illinois

When did momondo last update prices for flights from London to Illinois?
Prices for flights from London to Illinois refresh daily.
How many operators does momondo search for flights from London to Illinois?
The number of operators available for flights from London to Illinois is 7 as of June 2026.
How old do you have to be to fly from London to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Illinois is Boeing 767-300 (30.67% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (23.37%), Boeing 777 (14.93%), and Boeing 787-10 Dreamliner (9.84%).

Best airlines flying from London to Illinois

Compare and see reviews for airlines that fly from London to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $446	Free Cancellation	Rating 7.3 1,603 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom $467	Free Cancellation	Rating 7.4 1,828 reviews	Search Scandinavian Airlines flights
Austrian Airlines	PriceFrom $530	Free Cancellation	Rating 7.6 935 reviews	Search Austrian Airlines flights
United Airlines	PriceFrom $556	Free Cancellation	Rating 7.4 9,830 reviews	Search United Airlines flights
British Airways	PriceFrom $574	Free Cancellation	Rating 6.7 8,050 reviews	Search British Airways flights
American Airlines	PriceFrom $583	Free Cancellation	Rating 7.1 11,661 reviews	Search American Airlines flights
Lufthansa	PriceFrom $618	Free Cancellation	Rating 6.8 8,061 reviews	Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Illinois?

It is quick and easy to find London to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from London to Illinois with flexible booking policies on momondo?

Flights from London to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from London.

I’m not ready to book a flight from London to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in Illinois

Flights to New Yorkfrom $83

Flights to Los Angelesfrom $69

Flights to Miamifrom $76

Flights to Orlandofrom $65

Flights to Chicagofrom $58

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $56

Flights to Bostonfrom $83

Flights to Atlantafrom $50

Flights to Dallasfrom $87

Flights to Fort Lauderdalefrom $55

Cheap flights from London to Illinois from $370

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Illinois departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from London to Illinois

Our best British Airways deals on London to Illinois flight tickets

American Airlines flights from London to Illinois

Our best American Airlines deals on London to Illinois flight tickets

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See travel insights to Illinois from

How to get the cheapest flight ticket from London to Illinois

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest London to Illinois flight route?

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

What cabin class options are available on London to Illinois flights?

Can stopping save me money on London to Illinois flights?

What is the cheapest airline that flies from London to Illinois?

What airlines fly to Illinois?

How many flights depart from London to Illinois on average per day?

How many flights depart from London to Illinois on average per week?

Cheap London to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from London to Illinois

Best airlines flying from London to Illinois

Compare and see reviews for airlines that fly from London to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

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