What is the cheapest airline that flies from London Gatwick to Illinois?

Iberia, British Airways, and Finnair are the most popular carriers operating from London Gatwick to Illinois

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

As of December 2025, there is 1 operator available to choose from for flights from London Gatwick Airport to Illinois.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Gatwick Airport to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$358 Cheap Flights from London Gatwick Airport to Illinois in 2025/26

1 adult

0 bags

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Find the cheapest flights from London Gatwick Airport to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:00 pm - 11:33 pm

LGW

STL

15h 33m1 stop

10:16 am - 10:00 am

STL

LGW

17h 44m1 stop

$470Multiple Airlines

Thu, Jan 22 - Mon, Jan 26

2:00 pm - 11:33 pm

LGW

STL

15h 33m1 stop

11:18 am - 10:00 am

STL

LGW

16h 42m1 stop

$509Multiple Airlines

Fri, Jan 30 - Fri, Feb 6

2:00 pm - 11:33 pm

LGW

STL

15h 33m1 stop

11:18 am - 10:00 am

STL

LGW

16h 42m1 stop

$552Multiple Airlines

Fri, Jan 30 - Fri, Feb 6

2:00 pm - 6:51 am

LGW

STL

22h 51m2 stops

10:16 am - 10:00 am

STL

LGW

17h 44m1 stop

$556Multiple Airlines

Thu, Jan 22 - Mon, Jan 26

2:00 pm - 11:33 pm

LGW

STL

15h 33m1 stop

11:18 am - 10:00 am

STL

LGW

16h 42m1 stop

$567Multiple Airlines

Mon, Feb 2 - Fri, Feb 6

2:00 pm - 6:51 am

LGW

STL

22h 51m2 stops

11:18 am - 10:00 am

STL

LGW

16h 42m1 stop

$589Multiple Airlines

Fri, Jan 30 - Fri, Feb 6

2:00 pm - 11:47 am

LGW

ORD

27h 47m2 stops

10:48 am - 10:00 am

ORD

LGW

17h 12m1 stop

$604Multiple Airlines

Mon, Jan 19 - Mon, Jan 26

2:00 pm - 5:52 pm

LGW

ORD

33h 52m1 stop

12:44 pm - 10:00 am

ORD

LGW

15h 16m1 stop

$608Multiple Airlines

Mon, Jan 12 - Fri, Jan 16

1:00 pm - 6:15 pm

LGW

ORD

11h 15m1 stop

7:25 pm - 11:45 am

ORD

LGW

10h 20m1 stop

$621Icelandair

Thu, May 7 - Mon, May 11

10:35 am - 8:31 pm

LGW

STL

15h 56m2 stops

2:18 pm - 9:15 am

STL

LGW

12h 57m2 stops

$1,245WestJet

Thu, Jun 4 - Mon, Jun 8

Icelandair flights from London Gatwick Airport to Illinois

Our best Icelandair deals on London Gatwick Airport to Illinois flight tickets

Icelandair

May 7

LGW1:00 pmLondon Gatwick

11h 15m

1 stop

ORD6:15 pmChicago O'Hare Intl

May 11

ORD7:25 pmChicago O'Hare Intl

10h 20m

1 stop

LGW11:45 amLondon Gatwick

$621

Find similar

Icelandair

Feb 18

LGW11:55 amLondon Gatwick

11h 25m

1 stop

ORD5:20 pmChicago O'Hare Intl

Mar 16

ORD7:30 pmChicago O'Hare Intl

10h 25m

1 stop

LGW10:55 amLondon Gatwick

$622

Find similar

Icelandair

Feb 18

LGW11:55 amLondon Gatwick

11h 25m

1 stop

ORD5:20 pmChicago O'Hare Intl

Mar 16

ORD7:30 pmChicago O'Hare Intl

10h 25m

1 stop

LGW10:55 amLondon Gatwick

$623

Find similar

Iberia flights from London Gatwick Airport to Illinois

Our best Iberia deals on London Gatwick Airport to Illinois flight tickets

Iberia

Feb 16

LGW7:40 pmLondon Gatwick

25h 15m

1 stop

ORD2:55 pmChicago O'Hare Intl

Feb 23

ORD5:40 pmChicago O'Hare Intl

19h 20m

1 stop

LGW7:00 pmLondon Gatwick

$630

Find similar

Iberia

Feb 12

LGW7:40 pmLondon Gatwick

25h 15m

1 stop

ORD2:55 pmChicago O'Hare Intl

Feb 19

ORD5:40 pmChicago O'Hare Intl

19h 20m

1 stop

LGW7:00 pmLondon Gatwick

$655

Find similar

Iberia

Feb 21

LGW7:40 pmLondon Gatwick

25h 15m

1 stop

ORD2:55 pmChicago O'Hare Intl

Mar 19

ORD6:40 pmChicago O'Hare Intl

19h 20m

1 stop

LGW7:00 pmLondon Gatwick

$671

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 1/22

2:00 pm-11:33 pm

1 stop15h 33m

Lambert-St Louis

Mon 1/26

10:16 am-10:00 am

1 stop17h 44m

$470

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 1/30

2:00 pm-11:33 pm

1 stop15h 33m

Lambert-St Louis

Fri 2/6

11:18 am-10:00 am

1 stop16h 42m

$509

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 1/30

2:00 pm-11:33 pm

1 stop15h 33m

Lambert-St Louis

Fri 2/6

11:18 am-10:00 am

1 stop16h 42m

$552

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 1/22

2:00 pm-6:51 am

2 stops22h 51m

Lambert-St Louis

Mon 1/26

10:16 am-10:00 am

1 stop17h 44m

$556

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 2/2

2:00 pm-11:33 pm

1 stop15h 33m

Lambert-St Louis

Fri 2/6

11:18 am-10:00 am

1 stop16h 42m

$567

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 1/30

2:00 pm-6:51 am

2 stops22h 51m

Lambert-St Louis

Fri 2/6

11:18 am-10:00 am

1 stop16h 42m

$589

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 1/19

2:00 pm-11:47 am

2 stops27h 47m

Chicago O'Hare Intl

Mon 1/26

10:48 am-10:00 am

1 stop17h 12m

$604

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 1/12

2:00 pm-5:52 pm

1 stop33h 52m

Chicago O'Hare Intl

Fri 1/16

12:44 pm-10:00 am

1 stop15h 16m

$608

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 5/7

1:00 pm-6:15 pm

1 stop11h 15m

Chicago O'Hare Intl

Mon 5/11

7:25 pm-11:45 am

1 stop10h 20m

$621

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 6/4

10:35 am-8:31 pm

2 stops15h 56m

Lambert-St Louis

Mon 6/8

2:18 pm-9:15 am

2 stops12h 57m

$1,245

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Gatwick Airport 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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from London Gatwick Airport is in November. Flight prices, which tend to average around $443, 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 $499.

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

The cheapest day to depart from London Gatwick Airport to Illinois is on a Sunday when prices can be found for as low as $585. Flights from London Gatwick Airport to Illinois on a Monday will generally be more expensive and average around $1,037. 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 London Gatwick Airport to Illinois during this time can be as low as $713. Flights at noon are often more expensive with an average ticket price of $773.

Cheap London Gatwick Airport to Illinois flight deals and tips

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

Fastest flight time	11h 15m
Direct flights	None

The fastest flight from London Gatwick Airport to Illinois takes 11h 15m

There are no direct flights from London Gatwick Airport to Illinois. There are no popular flight routes from London Gatwick Airport to Illinois.

Search flight deals

When did momondo last update prices for flights from London Gatwick Airport to Illinois?
Prices for flights from London Gatwick Airport to Illinois refresh daily.
How many operators does momondo search for flights from London Gatwick Airport to Illinois?
As of December 2025, there is 1 operator available to choose from for flights from London Gatwick Airport to Illinois.
How old do you have to be to fly from London Gatwick Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Gatwick Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from London Gatwick Airport to Illinois

Compare and see reviews for airlines that fly from London Gatwick Airport to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $453	Free Cancellation	Rating 7.0 591 reviews		Search Icelandair flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Illinois for you.

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

Yes. momondo enables you to select and highlight flights to Illinois from London with this policy.

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

momondo helps you find the best flight between London 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 London to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.