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Cheap flights from Illinois to London from $151

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 2/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 pm - 6:55 pm
ORD
-
LGW
15h 55m
1 stop
Multiple Airlines Logo
8:50 am - 7:15 pm
LGW
-
ORD
16h 25m
1 stop
$517Multiple Airlines
Wed, Feb 11 - Wed, Feb 18
Icelandair Logo
6:30 pm - 10:55 am
ORD
-
LGW
10h 25m
1 stop
Icelandair Logo
11:55 am - 5:20 pm
LGW
-
ORD
11h 25m
1 stop
$518Icelandair
Sun, Feb 15 - Tue, Feb 24
Multiple Airlines Logo
6:40 am - 7:50 am
ORD
-
LGW
43h 10m
2 stops
Multiple Airlines Logo
2:00 pm - 5:46 pm
LGW
-
ORD
33h 46m
1 stop
$519Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
10:00 am - 12:45 pm
ORD
-
LGW
20h 45m
2 stops
Multiple Airlines Logo
8:35 pm - 2:10 pm
LGW
-
ORD
22h 35m
2 stops
$520Multiple Airlines
Sun, Mar 1 - Mon, Mar 9
Icelandair Logo
7:25 pm - 2:40 pm
ORD
-
LGW
13h 15m
1 stop
Icelandair Logo
3:40 pm - 6:15 pm
LGW
-
ORD
32h 35m
1 stop
$521Icelandair
Thu, Apr 23 - Sat, May 16
Icelandair Logo
7:25 pm - 11:45 am
ORD
-
LGW
10h 20m
1 stop
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
$522Icelandair
Fri, May 1 - Wed, May 13
British Airways Logo
1:29 pm - 8:20 pm
STL
-
LGW
24h 51m
2 stops
British Airways Logo
11:30 am - 8:57 am
LGW
-
STL
27h 27m
2 stops
$653British Airways
Sun, Apr 12 - Mon, Apr 27
Iberia Logo
12:11 pm - 10:50 am
STL
-
LGW
16h 39m
2 stops
Iberia Logo
9:05 pm - 10:14 pm
LGW
-
STL
31h 09m
2 stops
$660Iberia
Mon, Apr 20 - Mon, Apr 27
Delta Logo
5:59 pm - 3:45 pm
STL
-
LGW
15h 46m
2 stops
Delta Logo
10:35 am - 9:06 pm
LGW
-
STL
16h 31m
2 stops
$662Delta
Mon, Mar 30 - Tue, Apr 7
Delta Logo
5:59 pm - 3:45 pm
STL
-
LGW
15h 46m
2 stops
Delta Logo
10:35 am - 9:06 pm
LGW
-
STL
16h 31m
2 stops
$663Delta
Mon, Mar 30 - Tue, Apr 7

Iberia flights from Illinois to London Gatwick Airport

Our best Iberia deals on Illinois to London Gatwick Airport flight tickets
Iberia
Apr 20
STL12:11 pmLambert-St Louis
16h 39m
2 stops
LGW10:50 amLondon Gatwick
Apr 27
LGW9:05 pmLondon Gatwick
31h 09m
2 stops
STL10:14 pmLambert-St Louis
$660
Iberia
Jan 29
STL11:05 amLambert-St Louis
25h 55m
2 stops
LGW7:00 pmLondon Gatwick
Feb 5
LGW7:00 amLondon Gatwick
21h 44m
2 stops
STL10:44 pmLambert-St Louis
$827
Iberia
May 5
STL11:14 amLambert-St Louis
26h 46m
2 stops
LGW8:00 pmLondon Gatwick
May 14
LGW3:25 pmLondon Gatwick
38h 23m
2 stops
STL11:48 pmLambert-St Louis
$889

Icelandair flights from Illinois to London Gatwick Airport

Our best Icelandair deals on Illinois to London Gatwick Airport flight tickets
Icelandair
Feb 15
ORD6:30 pmChicago O'Hare Intl
10h 25m
1 stop
LGW10:55 amLondon Gatwick
Feb 24
LGW11:55 amLondon Gatwick
11h 25m
1 stop
ORD5:20 pmChicago O'Hare Intl
$518
Icelandair
Apr 23
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
May 16
LGW3:40 pmLondon Gatwick
32h 35m
1 stop
ORD6:15 pmChicago O'Hare Intl
$521
Icelandair
May 1
ORD7:25 pmChicago O'Hare Intl
10h 20m
1 stop
LGW11:45 amLondon Gatwick
May 13
LGW3:40 pmLondon Gatwick
11h 45m
1 stop
ORD9:25 pmChicago O'Hare Intl
$522

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to London Gatwick Airport 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 January 23, 2026.
Use the filters below to find and compare flights from Illinois to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 2/11

9:00 pm-6:55 pm

1 stop15h 55m

London Gatwick

Wed 2/18

8:50 am-7:15 pm

1 stop16h 25m

$517

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 2/15

6:30 pm-10:55 am

1 stop10h 25m

London Gatwick

Tue 2/24

11:55 am-5:20 pm

1 stop11h 25m

$518

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 2/23

6:40 am-7:50 am

2 stops43h 10m

London Gatwick

Mon 3/2

2:00 pm-5:46 pm

1 stop33h 46m

$519

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 3/1

10:00 am-12:45 pm

2 stops20h 45m

London Gatwick

Mon 3/9

8:35 pm-2:10 pm

2 stops22h 35m

$520

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 4/23

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Sat 5/16

3:40 pm-6:15 pm

1 stop32h 35m

$521

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 5/1

7:25 pm-11:45 am

1 stop10h 20m

London Gatwick

Wed 5/13

3:40 pm-9:25 pm

1 stop11h 45m

$522

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Sun 4/12

1:29 pm-8:20 pm

2 stops24h 51m

London Gatwick

Mon 4/27

11:30 am-8:57 am

2 stops27h 27m

$653

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 4/20

12:11 pm-10:50 am

2 stops16h 39m

London Gatwick

Mon 4/27

9:05 pm-10:14 pm

2 stops31h 09m

$660

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 3/30

5:59 pm-3:45 pm

2 stops15h 46m

London Gatwick

Tue 4/7

10:35 am-9:06 pm

2 stops16h 31m

$662

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 3/30

5:59 pm-3:45 pm

2 stops15h 46m

London Gatwick

Tue 4/7

10:35 am-9:06 pm

2 stops16h 31m

$663

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 London from

How to get the cheapest flight ticket from Illinois to London Gatwick Airport

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 Gatwick Airport?

In general, November is the cheapest month to fly from Illinois to London Gatwick Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $521. If you are unable to visit London Gatwick Airport during the month of November, then departing from Illinois during the month February is also very affordable. Most momondo users find prices during this month for around $589.

Can stopping save me money on Illinois to London Gatwick Airport flights?

You could potentially save up to 21% on your flight if you consider stops on a Illinois to London Gatwick Airport flight.

Cheap Illinois to London Gatwick Airport flight deals and tips

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

Fastest flight time

10h 15m

Direct flights

None
The fastest flight from Illinois to London Gatwick Airport takes 10h 15m
There are no direct flights from Illinois to London Gatwick Airport. There are no popular flight routes from Illinois to London Gatwick Airport.
Search flight deals

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

    Prices for flights from Illinois to London Gatwick Airport were last updated today.

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

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

    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 Illinois to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to London Gatwick Airport

Compare and see reviews for airlines that fly from Illinois to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $469Free CancellationRating
7.1
602 reviews
Search Icelandair flights
DeltaPriceFrom $712Free CancellationRating
7.9
8,092 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Luton
Milton Keynes
Dover
Slough
Guildford
Wembley
Crawley
Dartford
Hayes
Brentwood
Watford
Cobham
Folkestone
Romford
Stansted
Harrow
Croydon
Richmond

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to London. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to London from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Illinois and London 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 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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