What is the cheapest airline that flies from United Kingdom to Illinois?

JetBlue, Lufthansa, and United Airlines are the most popular carriers operating from United Kingdom to Illinois

How long is the flight from United Kingdom to Illinois?

The average flight duration from United Kingdom to Illinois depends on which airport you fly into and out of. Flying from Edinburgh to Chicago O'Hare Intl Airport is 8h 30m on average, while flying from London to Chicago O'Hare Intl Airport is 10h 05m on average. Chicago O'Hare Intl Airport is the most popular airport in Illinois.

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

As of July 2026, 405 flights take off from United Kingdom and land in Illinois each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.

Which airlines fly to Illinois?

British Airways, Aer Lingus and Icelandair are the top three most popular airlines that fly to Illinois from United Kingdom according to our data. British Airways is the first choice among our users, with 40% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 16 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between United Kingdom and Illinois is 57 per day as of July 2026. The most frequent departure time is 11:00, with 50% of daily flights leaving at midday.

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

Prices for flights from United Kingdom to Illinois are updated daily.

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

There are 18 operators available for flights from United Kingdom to Illinois as of July 2026.

How old do you have to be to fly from United Kingdom 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 United Kingdom to Illinois.

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

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£218 Cheap Flights from the United Kingdom to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United Kingdom to Illinois

Return

One-way

Last minute

Direct

Recent return flight deals from the United Kingdom to Illinois

Enter your travel dates to find the best prices.

06:00 - 14:00

EDI

ORD

14h 00m

1 stop

20:10 - 15:20

ORD

EDI

13h 10m

1 stop

£464Multiple Airlines

Wed, 11 Nov - Mon, 16 Nov

07:20 - 09:00

EDI

ORD

31h 40m

3 stops

09:50 - 10:10

ORD

EDI

18h 20m

1 stop

£493Multiple Airlines

Wed, 23 Sep - Wed, 30 Sep

11:00 - 13:45

LHR

ORD

8h 45mdirect

21:50 - 11:35

ORD

LHR

7h 45mdirect

£496British Airways

Thu, 26 Nov - Tue, 1 Dec

15:40 - 21:25

LGW

ORD

11h 45m

1 stop

22:25 - 14:40

ORD

LGW

10h 15m

1 stop

£497Icelandair

Wed, 2 Sep - Tue, 8 Sep

13:05 - 21:25

LHR

ORD

14h 20m

1 stop

19:25 - 11:55

ORD

LHR

10h 30m

1 stop

£497Icelandair

Wed, 2 Sep - Tue, 8 Sep

15:40 - 18:45

LHR

ORD

9h 05mdirect

21:50 - 11:35

ORD

LHR

7h 45mdirect

£497British Airways

Mon, 30 Nov - Thu, 3 Dec

13:00 - 18:15

LGW

ORD

11h 15m

1 stop

19:25 - 14:40

ORD

LGW

13h 15m

1 stop

£497Icelandair

Tue, 1 Sep - Tue, 15 Sep

12:00 - 20:47

LHR

STL

14h 47m

1 stop

13:36 - 12:25

STL

LHR

16h 49m

1 stop

£506United Airlines

Wed, 23 Sep - Fri, 2 Oct

06:40 - 23:58

LHR

STL

23h 18m

2 stops

15:54 - 17:40

STL

LHR

19h 46m

2 stops

£568Scandinavian Airlines

Fri, 28 Aug - Sun, 13 Sep

06:40 - 23:48

LHR

STL

22h 08m

2 stops

12:00 - 18:30

STL

LHR

24h 30m

2 stops

£570Scandinavian Airlines

Fri, 30 Oct - Sun, 8 Nov

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Icelandair flights from United Kingdom to Illinois

Our best Icelandair deals on United Kingdom to Illinois flight tickets

Icelandair

2 Sept

LGW15:40London Gatwick

11h 45m

1 stop

ORD21:25Chicago O'Hare Intl

8 Sept

ORD22:25Chicago O'Hare Intl

10h 15m

1 stop

LGW14:40London Gatwick

£497

Icelandair

1 Sept

LGW13:00London Gatwick

11h 15m

1 stop

ORD18:15Chicago O'Hare Intl

15 Sept

ORD19:25Chicago O'Hare Intl

13h 15m

1 stop

LGW14:40London Gatwick

£497

Icelandair

2 Sept

LGW15:40London Gatwick

11h 45m

1 stop

ORD21:25Chicago O'Hare Intl

9 Sept

ORD19:25Chicago O'Hare Intl

10h 20m

1 stop

LGW11:45London Gatwick

£498

TAP AIR PORTUGAL flights from United Kingdom to Illinois

Our best TAP AIR PORTUGAL deals on United Kingdom to Illinois flight tickets

TAP AIR PORTUGAL

6 Sept

LHR08:00London Heathrow

14h 00m

1 stop

ORD16:00Chicago O'Hare Intl

13 Sept

ORD18:00Chicago O'Hare Intl

12h 45m

1 stop

LHR12:45London Heathrow

£500

TAP AIR PORTUGAL

15 Sept

LGW16:25London Gatwick

29h 35m

1 stop

ORD16:00Chicago O'Hare Intl

23 Sept

ORD18:00Chicago O'Hare Intl

14h 00m

1 stop

LGW14:00London Gatwick

£501

TAP AIR PORTUGAL

25 Aug

LHR19:50London Heathrow

24h 55m

1 stop

ORD14:45Chicago O'Hare Intl

6 Sept

ORD18:00Chicago O'Hare Intl

12h 45m

1 stop

LHR12:45London Heathrow

£502

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 11/11

06:00-14:00

1 stop14h 00m

Chicago O'Hare Intl

Mon 16/11

20:10-15:20

1 stop13h 10m

£464

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 23/9

07:20-09:00

3 stops31h 40m

Chicago O'Hare Intl

Wed 30/9

09:50-10:10

1 stop18h 20m

£493

Fastest return journey

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 26/11

11:00-13:45

Nonstop8h 45m

Chicago O'Hare Intl

Tue 1/12

21:50-11:35

Nonstop7h 45m

£496

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 2/9

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Tue 8/9

22:25-14:40

1 stop10h 15m

£497

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 2/9

13:05-21:25

1 stop14h 20m

Chicago O'Hare Intl

Tue 8/9

19:25-11:55

1 stop10h 30m

£497

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 30/11

15:40-18:45

Nonstop9h 05m

Chicago O'Hare Intl

Thu 3/12

21:50-11:35

Nonstop7h 45m

£497

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 1/9

13:00-18:15

1 stop11h 15m

Chicago O'Hare Intl

Tue 15/9

19:25-14:40

1 stop13h 15m

£497

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 23/9

12:00-20:47

1 stop14h 47m

Lambert-St Louis

Fri 2/10

13:36-12:25

1 stop16h 49m

£506

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 28/8

06:40-23:58

2 stops23h 18m

Lambert-St Louis

Sun 13/9

15:54-17:40

2 stops19h 46m

£568

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 30/10

06:40-23:48

2 stops22h 08m

Lambert-St Louis

Sun 8/11

12:00-18:30

2 stops24h 30m

£570

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United Kingdom 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 month of February is, on average, the cheapest month to fly to Illinois from United Kingdom, with most prices found around £477. If you aren’t able to travel to Illinois during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £515.

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

The cheapest day to depart on your flight to Illinois is on a Thursday when prices can be found for as low as £673. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to Illinois on a Monday will generally be more expensive and average around £687. 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 data shows that the cheapest United Kingdom to Illinois flights are usually those with departure times at midday. Our users have found flights to Illinois at midday for as low as £660. In the afternoon is when there is more demand to fly to Illinois, so prices are often more expensive at around £687 per ticket.

What is the cheapest United Kingdom to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around £617 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from United Kingdom for as low as £576 on momondo.

What cabin class options are available on United Kingdom to Illinois flights?

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

No. A direct flight is the cheapest option for a flight between United Kingdom to Illinois.

Cheap United Kingdom to Illinois flight deals and tips

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

Best price found	£553
Fastest flight time	8h 30m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from United Kingdom in the past 72 hours is £553. The best return flight deal from United Kingdom to Illinois found on momondo in the last 72 hours is £631.

The fastest flight from United Kingdom to Illinois takes 8h 30m

Direct flights go from United Kingdom to Illinois every day.

There are 98 airports in Illinois. From United Kingdom there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from the United Kingdom to Illinois

When did momondo last update prices for flights from United Kingdom to Illinois?
Prices for flights from United Kingdom to Illinois are updated daily.
How many operators does momondo search for flights from United Kingdom to Illinois?
There are 18 operators available for flights from United Kingdom to Illinois as of July 2026.
How old do you have to be to fly from United Kingdom 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 United Kingdom to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United Kingdom to Illinois?
Based on momondo bookings for flights between United Kingdom and Illinois, the leading plane model is Boeing 767-300, making up 28.72% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 26.26%, Boeing 777 with 14.34%, and Boeing 787-10 Dreamliner with 9.34%.

Best airlines flying from United Kingdom to Illinois

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

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom £36	Free Cancellation	Rating 6.9 5,440 reviews	Search Ryanair flights
Icelandair	PriceFrom £203	Free Cancellation	Rating 7.0 715 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £303	Free Cancellation	Rating 7.5 693 reviews	Search Virgin Atlantic flights
Aer Lingus	PriceFrom £364	Free Cancellation	Rating 7.3 1,678 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom £376	Free Cancellation	Rating 7.4 1,894 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom £388	Free Cancellation	Rating 7.2 2,342 reviews	Search TAP AIR PORTUGAL flights
Brussels Airlines	PriceFrom £396	Free Cancellation	Rating 7.2 422 reviews	Search Brussels Airlines flights
British Airways	PriceFrom £413	Free Cancellation	Rating 6.7 8,124 reviews	Search British Airways flights
Lufthansa	PriceFrom £418	Free Cancellation	Rating 6.8 8,153 reviews	Search Lufthansa flights
United Airlines	PriceFrom £430	Free Cancellation	Rating 7.4 10,020 reviews	Search United Airlines flights

Why use momondo?

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

Finding the right flight to Illinois from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

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

Flights from United Kingdom 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 United Kingdom to Illinois?

Once you have performed a search for United Kingdom to Illinois 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 United Kingdom to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from United Kingdom to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.

An easier way to manage your Illinois trip

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Popular Cities in Illinois

Flights to New Yorkfrom £316

Flights to Orlandofrom £295

Flights to Los Angelesfrom £400

Flights to Miamifrom £383

Flights to San Franciscofrom £408

Flights to Bostonfrom £336

Flights to Washington, D.C.from £330

Flights to Chicagofrom £374

Flights to Las Vegasfrom £409

Flights to Atlantafrom £425

Flights to Dallasfrom £520

Flights to Tampafrom £456

Cheap flights from the United Kingdom to Illinois from £218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Illinois departing on 25/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from the United Kingdom to Illinois

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Icelandair flights from United Kingdom to Illinois

Our best Icelandair deals on United Kingdom to Illinois flight tickets

TAP AIR PORTUGAL flights from United Kingdom to Illinois

Our best TAP AIR PORTUGAL deals on United Kingdom to Illinois flight tickets

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See travel insights to Illinois from

How to get the cheapest flight ticket from United Kingdom 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 United Kingdom to Illinois flight route?

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

What cabin class options are available on United Kingdom to Illinois flights?

Can stopping save me money on United Kingdom to Illinois flights?

What is the cheapest airline that flies from United Kingdom to Illinois?

Which airlines fly to Illinois?

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

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

How long is the flight from United Kingdom to Illinois?

Cheap United Kingdom to Illinois flight deals and tips

Best price found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from the United Kingdom to Illinois

Best airlines flying from United Kingdom to Illinois

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

Why use momondo?

An easier way to manage your Illinois 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 Illinois

Popular Cities in Illinois

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

United Kingdom flight routes

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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