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Cheap flights from the United Kingdom to Illinois from $333

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 9/21. 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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0 bags

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Find the cheapest flights from the United Kingdom to Illinois

Recent round-trip flight deals from the United Kingdom to Illinois

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 7:52 pm
MAN
-
ORD
19h 52m
2 stops
Multiple Airlines Logo
10:25 pm - 11:40 am
ORD
-
MAN
31h 15m
1 stop
$657Multiple Airlines
Thu, Jul 9 - Sat, Jul 25
Multiple Airlines Logo
6:55 am - 5:50 pm
MAN
-
ORD
16h 55m
2 stops
Multiple Airlines Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
$658Multiple Airlines
Thu, Sep 10 - Tue, Sep 22
Scandinavian Airlines Logo
7:05 am - 4:10 pm
LHR
-
ORD
15h 05m
2 stops
Scandinavian Airlines Logo
7:15 pm - 6:50 pm
ORD
-
LHR
17h 35m
2 stops
$702Scandinavian Airlines
Fri, Oct 23 - Mon, Nov 2
TAP AIR PORTUGAL Logo
4:25 pm - 12:40 pm
LGW
-
ORD
26h 15m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 8:30 pm
ORD
-
LGW
20h 30m
2 stops
$703TAP AIR PORTUGAL
Wed, Oct 14 - Wed, Oct 21
Scandinavian Airlines Logo
7:05 am - 4:10 pm
LHR
-
ORD
15h 05m
2 stops
Scandinavian Airlines Logo
7:15 pm - 6:30 pm
ORD
-
LHR
17h 15m
1 stop
$703Scandinavian Airlines
Fri, Oct 23 - Mon, Nov 2
TAP AIR PORTUGAL Logo
4:30 pm - 4:00 pm
LGW
-
ORD
29h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 8:25 pm
ORD
-
LGW
20h 20m
2 stops
$704TAP AIR PORTUGAL
Sat, Oct 10 - Sat, Oct 17
Icelandair Logo
9:25 pm - 9:25 pm
LHR
-
ORD
30h 00m
1 stop
Icelandair Logo
7:25 pm - 11:55 am
ORD
-
LHR
10h 30m
1 stop
$713Icelandair
Thu, Oct 8 - Mon, Oct 12
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
7:25 pm - 2:40 pm
ORD
-
LGW
13h 15m
1 stop
$714Icelandair
Fri, Oct 2 - Mon, Oct 5
British Airways Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
British Airways Logo
12:40 pm - 6:55 am
STL
-
LHR
12h 15m
1 stop
$993British Airways
Tue, Jul 7 - Tue, Jul 21
British Airways Logo
12:00 pm - 8:03 pm
LHR
-
STL
14h 03m
1 stop
British Airways Logo
9:35 pm - 11:35 am
STL
-
LHR
8h 00mnonstop
$998British Airways
Wed, Jul 8 - Tue, Jul 28

Icelandair flights from United Kingdom to Illinois

Our best Icelandair deals on United Kingdom to Illinois flight tickets
Icelandair
Sep 19
LHR1:05 pmLondon Heathrow
11h 10m
1 stop
ORD6:15 pmChicago O'Hare Intl
Sep 22
ORD7:25 pmChicago O'Hare Intl
18h 55m
1 stop
LHR8:20 pmLondon Heathrow
$712
Icelandair
Oct 8
LHR9:25 pmLondon Heathrow
30h 00m
1 stop
ORD9:25 pmChicago O'Hare Intl
Oct 12
ORD7:25 pmChicago O'Hare Intl
10h 30m
1 stop
LHR11:55 amLondon Heathrow
$713
Icelandair
Oct 2
LGW3:40 pmLondon Gatwick
11h 45m
1 stop
ORD9:25 pmChicago O'Hare Intl
Oct 5
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
$714

JetBlue flights from United Kingdom to Illinois

Our best JetBlue deals on United Kingdom to Illinois flight tickets
JetBlue
Jun 22
LGW12:20 pmLondon Gatwick
27h 46m
1 stop
ORD10:06 amChicago O'Hare Intl
Jul 8
ORD8:21 pmChicago O'Hare Intl
31h 14m
1 stop
LGW9:35 amLondon Gatwick
$742
JetBlue
Jun 21
LGW12:20 pmLondon Gatwick
27h 46m
1 stop
ORD10:06 amChicago O'Hare Intl
Jul 1
ORD8:20 pmChicago O'Hare Intl
31h 15m
1 stop
LGW9:35 amLondon Gatwick
$743
JetBlue
Jun 23
EDI12:10 pmEdinburgh Turnhouse
15h 19m
1 stop
ORD9:29 pmChicago O'Hare Intl
Jul 2
ORD6:00 amChicago O'Hare Intl
21h 20m
1 stop
EDI9:20 amEdinburgh Turnhouse
$745

momondo Fare Finder

 
Customize your flight search to find flights from United Kingdom to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 31, 2026.
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 round-trip

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 7/9

6:00 am-7:52 pm

2 stops19h 52m

Chicago O'Hare Intl

Sat 7/25

10:25 pm-11:40 am

1 stop31h 15m

$657

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 9/10

6:55 am-5:50 pm

2 stops16h 55m

Chicago O'Hare Intl

Tue 9/22

7:25 pm-11:40 am

1 stop10h 15m

$658

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 10/23

7:05 am-4:10 pm

2 stops15h 05m

Chicago O'Hare Intl

Mon 11/2

7:15 pm-6:50 pm

2 stops17h 35m

$702

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 10/14

4:25 pm-12:40 pm

1 stop26h 15m

Chicago O'Hare Intl

Wed 10/21

6:00 pm-8:30 pm

2 stops20h 30m

$703

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 10/23

7:05 am-4:10 pm

2 stops15h 05m

Chicago O'Hare Intl

Mon 11/2

7:15 pm-6:30 pm

1 stop17h 15m

$703

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 10/10

4:30 pm-4:00 pm

1 stop29h 30m

Chicago O'Hare Intl

Sat 10/17

6:05 pm-8:25 pm

2 stops20h 20m

$704

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 10/8

9:25 pm-9:25 pm

1 stop30h 00m

Chicago O'Hare Intl

Mon 10/12

7:25 pm-11:55 am

1 stop10h 30m

$713

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 10/2

3:40 pm-9:25 pm

1 stop11h 45m

Chicago O'Hare Intl

Mon 10/5

7:25 pm-2:40 pm

1 stop13h 15m

$714
Quickest round-trip

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 7/7

4:25 pm-7:30 pm

Nonstop9h 05m

Lambert-St Louis

Tue 7/21

12:40 pm-6:55 am

1 stop12h 15m

$993

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 7/8

12:00 pm-8:03 pm

1 stop14h 03m

Lambert-St Louis

Tue 7/28

9:35 pm-11:35 am

Nonstop8h 00m

$998

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from United Kingdom is in November. Flight prices, which tend to average around $594, 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 November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $634.

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

The cheapest day to depart from United Kingdom to Illinois is on a Wednesday when prices can be found for as low as $853. Flights from United Kingdom to Illinois on a Saturday will generally be more expensive and average around $963. 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 in the morning. Flights from United Kingdom to Illinois during this time can be as low as $908. Flights in the afternoon are often more expensive with an average ticket price of $991.

What is the cheapest United Kingdom to Illinois flight route?

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

How far in advance should I book a flight from the United Kingdom 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 $781 when searching weeks out. 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 $639 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?

You could potentially save up to 19% on your flight if you consider stops on a United Kingdom to Illinois flight.

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

$680

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 $680. The best round-trip flight deal from United Kingdom to Illinois found on momondo in the last 72 hours is $1,044.
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?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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?

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
Aer LingusPriceFrom $117Free CancellationRating
7.3
1,589 reviews
Search Aer Lingus flights
Scandinavian AirlinesPriceFrom $468Free CancellationRating
7.4
1,803 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $485Free CancellationRating
7.4
9,769 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $530Free CancellationRating
7.6
921 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $531Free CancellationRating
6.7
8,014 reviews
Search British Airways flights
American AirlinesPriceFrom $583Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights
LufthansaPriceFrom $618Free CancellationRating
6.8
8,033 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $653Free CancellationRating
7.2
2,263 reviews
Search TAP AIR PORTUGAL flights
IberiaPriceFrom $778Free CancellationRating
7.0
3,222 reviews
Search Iberia 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?

momondo helps you find the best flight between United Kingdom and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of United Kingdom 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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