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Cheap flights from Illinois to London from $335

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 9/9. 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.
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
$722Icelandair
Sat, Oct 3 - Sat, Oct 10
Icelandair Logo
10:25 pm - 2:40 pm
ORD
-
LGW
10h 15m
1 stop
Icelandair Logo
3:40 pm - 6:15 pm
LGW
-
ORD
32h 35m
1 stop
$726Icelandair
Fri, Oct 2 - Mon, Oct 5
Icelandair Logo
7:25 pm - 2:40 pm
ORD
-
LGW
13h 15m
1 stop
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
$727Icelandair
Thu, Sep 17 - Wed, Sep 23
Icelandair Logo
10:25 pm - 2:40 pm
ORD
-
LGW
10h 15m
1 stop
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
$728Icelandair
Sun, Aug 23 - Wed, Sep 2
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
$729Icelandair
Sun, Sep 27 - Mon, Oct 5
Multiple Airlines Logo
10:30 am - 7:55 am
MDW
-
LGW
15h 25m
1 stop
Multiple Airlines Logo
2:00 pm - 10:02 pm
LGW
-
MDW
38h 02m
2 stops
$807Multiple Airlines
Thu, May 28 - Mon, Jun 1
Multiple Airlines Logo
4:19 pm - 10:00 am
STL
-
LGW
35h 41m
1 stop
Multiple Airlines Logo
2:00 pm - 5:33 pm
LGW
-
STL
33h 33m
2 stops
$836Multiple Airlines
Mon, May 25 - Mon, Jun 1
Delta Logo
5:58 pm - 4:00 pm
EVV
-
LGW
16h 02m
2 stops
Delta Logo
10:25 am - 9:53 pm
LGW
-
EVV
17h 28m
2 stops
$1,382Delta
Mon, Jun 8 - Mon, Jun 15
Delta Logo
4:19 pm - 4:00 pm
BMI
-
LGW
17h 41m
2 stops
Delta Logo
10:25 am - 10:47 pm
LGW
-
BMI
18h 22m
2 stops
$1,382Delta
Mon, Jun 8 - Mon, Jun 15
British Airways Logo
7:18 pm - 8:00 pm
PIA
-
LGW
18h 42m
2 stops
British Airways Logo
8:40 pm - 6:30 pm
LGW
-
PIA
27h 50m
2 stops
$2,078British Airways
Sun, Jul 26 - Thu, Jul 30

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Icelandair flights from Illinois to London Gatwick Airport

Our best Icelandair deals on Illinois to London Gatwick Airport flight tickets
Icelandair
Oct 3
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
Oct 10
LGW3:40 pmLondon Gatwick
32h 35m
1 stop
ORD6:15 pmChicago O'Hare Intl
$722
Icelandair
Oct 2
ORD10:25 pmChicago O'Hare Intl
10h 15m
1 stop
LGW2:40 pmLondon Gatwick
Oct 5
LGW3:40 pmLondon Gatwick
32h 35m
1 stop
ORD6:15 pmChicago O'Hare Intl
$726
Icelandair
Sep 17
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
Sep 23
LGW3:40 pmLondon Gatwick
11h 45m
1 stop
ORD9:25 pmChicago O'Hare Intl
$727

SWISS flights from Illinois to London Gatwick Airport

Our best SWISS deals on Illinois to London Gatwick Airport flight tickets
SWISS
May 10
ORD2:20 pmChicago O'Hare Intl
12h 05m
1 stop
LGW8:25 amLondon Gatwick
May 19
LGW9:25 amLondon Gatwick
12h 30m
1 stop
ORD3:55 pmChicago O'Hare Intl
$790
SWISS
May 10
ORD2:20 pmChicago O'Hare Intl
12h 05m
1 stop
LGW8:25 amLondon Gatwick
May 19
LGW9:25 amLondon Gatwick
12h 30m
1 stop
ORD3:55 pmChicago O'Hare Intl
$817
SWISS
Apr 29
ORD2:20 pmChicago O'Hare Intl
12h 05m
1 stop
LGW8:25 amLondon Gatwick
May 5
LGW9:25 amLondon Gatwick
12h 30m
1 stop
ORD3:55 pmChicago O'Hare Intl
$819

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 April 27, 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

Cheapest round-trip

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sat 10/3

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Sat 10/10

3:40 pm-6:15 pm

1 stop32h 35m

$722

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 10/2

10:25 pm-2:40 pm

1 stop10h 15m

London Gatwick

Mon 10/5

3:40 pm-6:15 pm

1 stop32h 35m

$726

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 9/17

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Wed 9/23

3:40 pm-9:25 pm

1 stop11h 45m

$727
Quickest round-trip

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 8/23

10:25 pm-2:40 pm

1 stop10h 15m

London Gatwick

Wed 9/2

3:40 pm-9:25 pm

1 stop11h 45m

$728

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 9/27

7:25 pm-2:40 pm

1 stop13h 15m

London Gatwick

Mon 10/5

3:40 pm-6:15 pm

1 stop32h 35m

$729

ChicagoLondon

MDW - LGW

MDWLGW

Chicago Midway

Thu 5/28

10:30 am-7:55 am

1 stop15h 25m

London Gatwick

Mon 6/1

2:00 pm-10:02 pm

2 stops38h 02m

$807

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 5/25

4:19 pm-10:00 am

1 stop35h 41m

London Gatwick

Mon 6/1

2:00 pm-5:33 pm

2 stops33h 33m

$836

EvansvilleLondon

EVV - LGW

EVVLGW

Evansville Dress Regional

Mon 6/8

5:58 pm-4:00 pm

2 stops16h 02m

London Gatwick

Mon 6/15

10:25 am-9:53 pm

2 stops17h 28m

$1,382

BloomingtonLondon

BMI - LGW

BMILGW

Bloomington-Normal

Mon 6/8

4:19 pm-4:00 pm

2 stops17h 41m

London Gatwick

Mon 6/15

10:25 am-10:47 pm

2 stops18h 22m

$1,382

PeoriaLondon

PIA - LGW

PIALGW

Greater Peoria

Sun 7/26

7:18 pm-8:00 pm

2 stops18h 42m

London Gatwick

Thu 7/30

8:40 pm-6:30 pm

2 stops27h 50m

$2,078

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, June 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 $62. If you are unable to visit London Gatwick Airport during the month of June, then departing from Illinois during the month August is also very affordable. Most momondo users find prices during this month for around $81.

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

You could potentially save up to 14% 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

Frequently asked questions about flying from Illinois to London Gatwick Airport

  • 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 $465Free CancellationRating
7.0
642 reviews
Search Icelandair flights
DeltaPriceFrom $712Free CancellationRating
7.9
8,459 reviews
Search Delta flights

Traveling to a place near London?

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

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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