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

As of November 2025, 37 flights take off from Illinois and land in London each day. The most common flight departure time for this route is 21:00, with 68% of daily flights taking off in the evening.

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

Scandinavian Airlines, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from Illinois to London

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

As of November 2025, 260 flights take off from Illinois and land in London each week. The most common flight departure day for this route is Sat, with 17% of weekly flights taking off on this day.

How long does it take to fly to London?

Flight times from Illinois to London vary, but if you’re flying out of Chicago and flying into London Heathrow Airport (one of the most popular routes), then the duration is 9h 20m on average. Another popular route from Illinois to London is flying from Peoria to London Heathrow Airport, which will take roughly 10h 25m. Keep in mind that layovers or delays could extend your travel time.

Which airlines fly to London?

British Airways, Iberia and Finnair are the top three most popular airlines that fly to London from Illinois according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when travelling to London. Keep in mind that there are 7 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to London refresh daily.

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

As of November 2025, there are 10 operators available to choose from for flights from Illinois to London.

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

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 Illinois to London.

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

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£229 Cheap Flights from Illinois to London in 2025/26

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18:30 - 10:50ORD-LHR

10h 20m1 stop

20:35 - 17:20LHR-ORD

26h 45m1 stop

£426Icelandair

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Sun, 7 Dec - Tue, 16 Dec

19:25 - 14:40ORD-LGW

13h 15m1 stop

15:40 - 18:15LGW-ORD

32h 35m1 stop

£426Icelandair

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Wed, 8 Apr - Sat, 18 Apr

19:20 - 21:40ORD-LHR

20h 20m1 stop

15:35 - 16:45LHR-ORD

31h 10m2 stops

£427Scandinavian Airlines

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Thu, 22 Jan - Tue, 10 Feb

19:20 - 23:05ORD-STN

21h 45m2 stops

21:45 - 16:55STN-ORD

25h 10m2 stops

£427Multiple Airlines

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Sat, 7 Feb - Sat, 14 Feb

20:20 - 08:55ORD-LHR

31h 35m2 stops

06:40 - 17:55LHR-ORD

16h 15m1 stop

£428Scandinavian Airlines

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Mon, 9 Mar - Fri, 13 Mar

13:30 - 19:25ORD-LTN

24h 55m3 stops

20:50 - 17:45LTN-ORD

25h 55m2 stops

£428Multiple Airlines

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Wed, 11 Mar - Sun, 15 Mar

16:10 - 08:40ORD-LCY

34h 30m1 stop

09:15 - 16:20LCY-ORD

13h 05m1 stop

£475SWISS

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Sun, 7 Dec - Tue, 16 Dec

12:50 - 06:25MDW-LHR

11h 35m1 stop

06:30 - 16:34LHR-MDW

16h 04m2 stops

£478Delta

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Wed, 3 Dec - Wed, 10 Dec

12:50 - 07:50MDW-LHR

13h 00m1 stop

08:40 - 18:18LHR-MDW

15h 38m2 stops

£480Delta

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Tue, 2 Dec - Tue, 9 Dec

18:50 - 12:55ORD-LCY

12h 05m1 stop

17:50 - 16:20LCY-ORD

28h 30m1 stop

£481SWISS

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Wed, 14 Jan - Mon, 19 Jan

Icelandair flights from Illinois to London

Our best Icelandair deals on Illinois to London flight tickets

Icelandair

7 Dec

ORD18:30Chicago O'Hare Intl

10h 20m

1 stop

LHR10:50London Heathrow

16 Dec

LHR20:35London Heathrow

26h 45m

1 stop

ORD17:20Chicago O'Hare Intl

£426

Find similar

Icelandair

17 May

ORD19:25Chicago O'Hare Intl

13h 15m

1 stop

LGW14:40London Gatwick

3 Jun

LGW15:40London Gatwick

12h 00m

1 stop

ORD21:40Chicago O'Hare Intl

£428

Find similar

Icelandair

22 Apr

ORD19:25Chicago O'Hare Intl

10h 30m

1 stop

LHR11:55London Heathrow

27 Apr

LHR13:05London Heathrow

11h 10m

1 stop

ORD18:15Chicago O'Hare Intl

£430

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Scandinavian Airlines flights from Illinois to London

Our best Scandinavian Airlines deals on Illinois to London flight tickets

Scandinavian Airlines

22 Jan

ORD19:20Chicago O'Hare Intl

20h 20m

1 stop

LHR21:40London Heathrow

10 Feb

LHR15:35London Heathrow

31h 10m

2 stops

ORD16:45Chicago O'Hare Intl

£427

Find similar

Scandinavian Airlines

9 Mar

ORD20:20Chicago O'Hare Intl

31h 35m

2 stops

LHR08:55London Heathrow

13 Mar

LHR06:40London Heathrow

16h 15m

1 stop

ORD17:55Chicago O'Hare Intl

£428

Find similar

Scandinavian Airlines

7 Mar

ORD19:20Chicago O'Hare Intl

20h 20m

1 stop

LHR21:40London Heathrow

15 Mar

LHR10:20London Heathrow

12h 25m

1 stop

ORD17:45Chicago O'Hare Intl

£429

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Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 7/12

18:30-10:50

1 stop10h 20m

London Heathrow

Tue 16/12

20:35-17:20

1 stop26h 45m

£426

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 8/4

19:25-14:40

1 stop13h 15m

London Gatwick

Sat 18/4

15:40-18:15

1 stop32h 35m

£426

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 22/1

19:20-21:40

1 stop20h 20m

London Heathrow

Tue 10/2

15:35-16:45

2 stops31h 10m

£427

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 7/2

19:20-23:05

2 stops21h 45m

London Stansted

Sat 14/2

21:45-16:55

2 stops25h 10m

£427

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 9/3

20:20-08:55

2 stops31h 35m

London Heathrow

Fri 13/3

06:40-17:55

1 stop16h 15m

£428

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 11/3

13:30-19:25

3 stops24h 55m

London Luton

Sun 15/3

20:50-17:45

2 stops25h 55m

£428

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Sun 7/12

16:10-08:40

1 stop34h 30m

London City

Tue 16/12

09:15-16:20

1 stop13h 05m

£475

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Wed 3/12

12:50-06:25

1 stop11h 35m

London Heathrow

Wed 10/12

06:30-16:34

2 stops16h 04m

£478

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

Tue 2/12

12:50-07:50

1 stop13h 00m

London Heathrow

Tue 9/12

08:40-18:18

2 stops15h 38m

£480

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Wed 14/1

18:50-12:55

1 stop12h 05m

London City

Mon 19/1

17:50-16:20

1 stop28h 30m

£481

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How to get the cheapest flight ticket from Illinois to London

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 London?

The cheapest month to fly to London from Illinois is in February. Flight prices, which tend to average around £498, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Illinois averaging around £501.

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

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to London for around £715.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £575. Flights at midday are often more expensive, with an average ticket price of £836.

What is the cheapest Illinois to London flight route?

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

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

You are more likely to see cheaper flights to London from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £607 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Illinois for as low as £536 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to London 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 Illinois to London flights?

You could potentially save up to 37% on your flight if you consider stops on a Illinois to London flight.

Cheap Illinois to London flight deals and tips

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

Best price found	£304
Fastest flight time	7h 40m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Illinois in the past 72 hours is £304. The best return flight deal from Illinois to London found on momondo in the last 72 hours is £500.

The fastest flight from Illinois to London takes 7h 40m

Direct flights go from Illinois to London every day.

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

When did momondo last update prices for flights from Illinois to London?
Prices for flights from Illinois to London refresh daily.
How many operators does momondo search for flights from Illinois to London?
As of November 2025, there are 10 operators available to choose from for flights from Illinois to London.
How old do you have to be to fly from Illinois to London?
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 Illinois to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to London?
Based on momondo bookings for flights between Illinois and London, the leading plane model is Boeing 787-9 Dreamliner, making up 38.70% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 18.69%, Boeing 767-300 with 16.41%, and Boeing 777 with 15.64%.

Best airlines flying from Illinois to London

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

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £368	Free Cancellation	Rating 6.8 7,581 reviews	Search Lufthansa flights
American Airlines	PriceFrom £396	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Finnair	PriceFrom £425	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Iberia	PriceFrom £458	Free Cancellation	Rating 7.0 3,032 reviews	Search Iberia flights
Aer Lingus	PriceFrom £461	Free Cancellation	Rating 7.2 1,378 reviews	Search Aer Lingus flights
British Airways	PriceFrom £462	Free Cancellation	Rating 6.7 7,535 reviews	Search British Airways flights
United Airlines	PriceFrom £474	Free Cancellation	Rating 7.4 9,036 reviews	Search United Airlines flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Dover

Colchester

Chelmsford

Hayes

Worthing

Ramsgate

Dartford

Bedford

Winchester

Why use momondo?

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

It is quick and easy to find Illinois to London 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 London that suits you.

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

All flight searches from Illinois to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Illinois to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to London from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

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Flights to Manchesterfrom £32

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Flights to Aberdeenfrom £44

Flights to Liverpoolfrom £31

Flights to Leedsfrom £40

Flights to Invernessfrom £37

Flights to Newquayfrom £34

Cheap flights from Illinois to London from £229

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 8/1. 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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Icelandair flights from Illinois to London

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Scandinavian Airlines flights from Illinois to London

Our best Scandinavian Airlines deals on Illinois to London flight tickets

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How to get the cheapest flight ticket from Illinois to London

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

What is the cheapest month to fly to London?

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

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to London for around £715.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £575. Flights at midday are often more expensive, with an average ticket price of £836.

What is the cheapest Illinois to London flight route?

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

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

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

There are 4 cabin classes available to choose from on Illinois to London 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 Illinois to London flights?

You could potentially save up to 37% on your flight if you consider stops on a Illinois to London flight.

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

Scandinavian Airlines, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from Illinois to London

Which airlines fly to London?

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

As of November 2025, 37 flights take off from Illinois and land in London each day. The most common flight departure time for this route is 21:00, with 68% of daily flights taking off in the evening.

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

As of November 2025, 260 flights take off from Illinois and land in London each week. The most common flight departure day for this route is Sat, with 17% of weekly flights taking off on this day.

How long does it take to fly to London?

Cheap Illinois to London flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in London

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

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

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

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

What is the most popular plane model from Illinois to London?

Best airlines flying from Illinois to London

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

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London trip

We make it super easy to schedule, organise 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 the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London