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Cheap flights from the United Kingdom to Illinois from $292

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 8/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 2:00 pm
EDI
-
ORD
14h 00m
1 stop
Multiple Airlines Logo
8:10 pm - 3:20 pm
ORD
-
EDI
13h 10m
1 stop
$622Multiple Airlines
Wed, Nov 11 - Mon, Nov 16
Multiple Airlines Logo
7:20 am - 9:00 am
EDI
-
ORD
31h 40m
3 stops
Multiple Airlines Logo
9:50 am - 10:10 am
ORD
-
EDI
18h 20m
1 stop
$661Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
British Airways Logo
11:00 am - 1:45 pm
LHR
-
ORD
8h 45mnonstop
British Airways Logo
9:50 pm - 11:35 am
ORD
-
LHR
7h 45mnonstop
$665British Airways
Thu, Nov 26 - Tue, Dec 1
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
10:25 pm - 2:40 pm
ORD
-
LGW
10h 15m
1 stop
$666Icelandair
Wed, Sep 2 - Tue, Sep 8
Icelandair Logo
1:05 pm - 9:25 pm
LHR
-
ORD
14h 20m
1 stop
Icelandair Logo
7:25 pm - 11:55 am
ORD
-
LHR
10h 30m
1 stop
$666Icelandair
Wed, Sep 2 - Tue, Sep 8
British Airways Logo
3:40 pm - 6:45 pm
LHR
-
ORD
9h 05mnonstop
British Airways Logo
9:50 pm - 11:35 am
ORD
-
LHR
7h 45mnonstop
$667British Airways
Mon, Nov 30 - Thu, Dec 3
Icelandair Logo
1:00 pm - 6:15 pm
LGW
-
ORD
11h 15m
1 stop
Icelandair Logo
7:25 pm - 2:40 pm
ORD
-
LGW
13h 15m
1 stop
$667Icelandair
Tue, Sep 1 - Tue, Sep 15
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
7:25 pm - 11:45 am
ORD
-
LGW
10h 20m
1 stop
$668Icelandair
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
8:00 am - 6:16 pm
LHR
-
STL
16h 16m
1 stop
United Airlines Logo
1:36 pm - 12:25 pm
STL
-
LHR
16h 49m
1 stop
$679United Airlines
Wed, Sep 23 - Sat, Oct 3
Lufthansa Logo
6:30 am - 1:25 pm
LHR
-
STL
12h 55m
1 stop
Lufthansa Logo
1:29 pm - 6:45 am
STL
-
LHR
11h 16m
1 stop
$811Lufthansa
Tue, Sep 15 - Tue, Sep 29

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Icelandair flights from United Kingdom to Illinois

Our best Icelandair deals on United Kingdom to Illinois flight tickets
Icelandair
Sep 2
LGW3:40 pmLondon Gatwick
11h 45m
1 stop
ORD9:25 pmChicago O'Hare Intl
Sep 8
ORD10:25 pmChicago O'Hare Intl
10h 15m
1 stop
LGW2:40 pmLondon Gatwick
$666
Icelandair
Sep 1
LGW1:00 pmLondon Gatwick
11h 15m
1 stop
ORD6:15 pmChicago O'Hare Intl
Sep 15
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
$667
Icelandair
Sep 2
LGW3:40 pmLondon Gatwick
11h 45m
1 stop
ORD9:25 pmChicago O'Hare Intl
Sep 9
ORD7:25 pmChicago O'Hare Intl
10h 20m
1 stop
LGW11:45 amLondon Gatwick
$668

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
Sep 6
LHR8:00 amLondon Heathrow
14h 00m
1 stop
ORD4:00 pmChicago O'Hare Intl
Sep 13
ORD6:00 pmChicago O'Hare Intl
12h 45m
1 stop
LHR12:45 pmLondon Heathrow
$671
TAP AIR PORTUGAL
Sep 15
LGW4:25 pmLondon Gatwick
29h 35m
1 stop
ORD4:00 pmChicago O'Hare Intl
Sep 23
ORD6:00 pmChicago O'Hare Intl
14h 00m
1 stop
LGW2:00 pmLondon Gatwick
$672
TAP AIR PORTUGAL
Aug 25
LHR7:50 pmLondon Heathrow
24h 55m
1 stop
ORD2:45 pmChicago O'Hare Intl
Sep 6
ORD6:00 pmChicago O'Hare Intl
12h 45m
1 stop
LHR12:45 pmLondon Heathrow
$673

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 July 22, 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

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 11/11

6:00 am-2:00 pm

1 stop14h 00m

Chicago O'Hare Intl

Mon 11/16

8:10 pm-3:20 pm

1 stop13h 10m

$622

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 9/23

7:20 am-9:00 am

3 stops31h 40m

Chicago O'Hare Intl

Wed 9/30

9:50 am-10:10 am

1 stop18h 20m

$661
Quickest round-trip

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 11/26

11:00 am-1:45 pm

Nonstop8h 45m

Chicago O'Hare Intl

Tue 12/1

9:50 pm-11:35 am

Nonstop7h 45m

$665

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 9/2

3:40 pm-9:25 pm

1 stop11h 45m

Chicago O'Hare Intl

Tue 9/8

10:25 pm-2:40 pm

1 stop10h 15m

$666

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/2

1:05 pm-9:25 pm

1 stop14h 20m

Chicago O'Hare Intl

Tue 9/8

7:25 pm-11:55 am

1 stop10h 30m

$666

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 11/30

3:40 pm-6:45 pm

Nonstop9h 05m

Chicago O'Hare Intl

Thu 12/3

9:50 pm-11:35 am

Nonstop7h 45m

$667

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 9/1

1:00 pm-6:15 pm

1 stop11h 15m

Chicago O'Hare Intl

Tue 9/15

7:25 pm-2:40 pm

1 stop13h 15m

$667

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 9/2

3:40 pm-9:25 pm

1 stop11h 45m

Chicago O'Hare Intl

Wed 9/9

7:25 pm-11:45 am

1 stop10h 20m

$668

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/23

8:00 am-6:16 pm

1 stop16h 16m

Lambert-St Louis

Sat 10/3

1:36 pm-12:25 pm

1 stop16h 49m

$679

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 9/15

6:30 am-1:25 pm

1 stop12h 55m

Lambert-St Louis

Tue 9/29

1:29 pm-6:45 am

1 stop11h 16m

$811

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 February. Flight prices, which tend to average around $640, 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 February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $691.

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 Thursday when prices can be found for as low as $898. Flights from United Kingdom to Illinois on a Saturday will generally be more expensive and average around $1,036. 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 United Kingdom to Illinois during this time can be as low as $907. Flights in the morning are often more expensive with an average ticket price of $945.

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 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 $828 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 $772 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 11% 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

$731

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 $731. The best round-trip flight deal from United Kingdom to Illinois found on momondo in the last 72 hours is $853.
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
IcelandairPriceFrom $421Free CancellationRating
7.0
715 reviews
Search Icelandair flights
Aer LingusPriceFrom $446Free CancellationRating
7.3
1,678 reviews
Search Aer Lingus flights
Scandinavian AirlinesPriceFrom $468Free CancellationRating
7.4
1,894 reviews
Search Scandinavian Airlines flights
Austrian AirlinesPriceFrom $530Free CancellationRating
7.6
950 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $531Free CancellationRating
6.7
8,124 reviews
Search British Airways flights
United AirlinesPriceFrom $572Free CancellationRating
7.4
10,019 reviews
Search United Airlines flights
American AirlinesPriceFrom $583Free CancellationRating
7.1
11,835 reviews
Search American Airlines flights
LufthansaPriceFrom $703Free CancellationRating
6.8
8,158 reviews
Search Lufthansa 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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