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Cheap flights from London Gatwick Airport to Illinois from £257

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Illinois

Keep the following information in mind while searching for Gatwick to Illinois flight deals. Data was last updated 16 January 2026.

Round-trip from

£399

One-way from

£257

Popular in

July

Cheapest in

February

Average price

£465
Icelandair
  • Icelandair
  • 4/5-14/5
  • 2 total stops
  • 45h 50m total
  • London to Illinois
Search Deals
23/1
  • 23/1
  • 2 total stops
  • 22h 51m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£66 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Gatwick to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Illinois
Explore the most affordable flight options available from Gatwick to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 January 2026.

Mon 4/515:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 14/519:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 14/1£399
Thu 22/116:00
LGW
-
ORD
1 stop29h 25m
TAP AIR PORTUGAL
Wed 4/219:10
ORD
-
LGW
1 stop13h 55m
TAP AIR PORTUGAL
Deal found 14/1£400
Wed 18/218:40
LGW
-
ORD
1 stop27h 40m
SWISS
Sun 22/218:50
ORD
-
LGW
1 stop17h 00m
SWISS
Deal found 14/1£402
Sat 7/216:35
LGW
-
ORD
1 stop28h 10m
TAP AIR PORTUGAL
Wed 18/219:10
ORD
-
LGW
1 stop13h 55m
TAP AIR PORTUGAL
Deal found 14/1£406
Sat 28/211:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Sat 7/318:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 14/1£408
Wed 11/218:40
LGW
-
ORD
1 stop24h 05m
SWISS
Wed 18/218:50
ORD
-
LGW
1 stop17h 00m
SWISS
Deal found 14/1£409
Thu 22/111:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Wed 4/218:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 15/1£409
Thu 26/211:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Sun 29/322:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 15/1£413
Sat 21/212:30
LGW
-
ORD
1 stop15h 04m
American Airlines
Sat 28/214:31
ORD
-
LGW
1 stop12h 29m
American Airlines
Deal found 14/1£415
Fri 23/114:00
LGW
-
MDW
2 stops24h 43m
Multiple Airlines
Mon 26/113:00
MDW
-
LGW
1 stop15h 00m
Multiple Airlines
Deal found 15/1£471
Fri 6/214:00
LGW
-
STL
1 stop15h 33m
Multiple Airlines
Fri 13/220:20
STL
-
LGW
2 stops51h 40m
Multiple Airlines
Deal found 14/1£529
Fri 6/214:00
LGW
-
STL
1 stop15h 33m
Multiple Airlines
Sat 14/220:17
STL
-
LGW
2 stops27h 43m
Multiple Airlines
Deal found 14/1£531

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick 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, Cheapflights users made 858,174 searches. Data last updated 16 January 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Illinois that are best for you.

Fly from

Gatwick

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 16/3

11:55-18:20

1 stop11h 25m

Chicago O'Hare Intl

Mon 23/3

19:30-10:55

1 stop10h 25m

£415

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 2/3

14:00-11:22

2 stops27h 22m

Chicago O'Hare Intl

Mon 9/3

12:44-10:00

1 stop16h 16m

£418

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 27/5

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Sun 31/5

22:25-14:40

1 stop10h 15m

£439

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 15/2

10:20-19:15

2 stops38h 55m

Chicago O'Hare Intl

Sun 8/3

17:44-09:00

1 stop34h 16m

£462

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 26/5

13:00-18:15

1 stop11h 15m

Chicago O'Hare Intl

Thu 11/6

19:25-14:40

1 stop13h 15m

£474

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 14/2

10:10-14:45

2 stops34h 35m

Chicago O'Hare Intl

Fri 27/2

20:15-15:45

1 stop13h 30m

£482

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 13/2

10:45-14:45

2 stops58h 00m

Chicago O'Hare Intl

Fri 20/2

20:15-08:20

2 stops30h 05m

£517

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 17/2

09:40-15:00

2 stops35h 20m

Chicago O'Hare Intl

Tue 10/3

19:30-16:20

2 stops15h 50m

£518

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 13/2

19:40-14:55

1 stop25h 15m

Chicago O'Hare Intl

Fri 20/2

06:04-10:50

2 stops22h 46m

£519

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 6/2

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Fri 13/2

20:20-06:00

2 stops51h 40m

£529

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 60 results
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2
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Best time to book a flight from Gatwick to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Gatwick with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Illinois

What is the cheapest month to book a flight from London Gatwick Airport to Illinois?

Currently, December is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of £218). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £513). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 16 January 2026.
See what other customers who have flown with Icelandair and British Airways from London Gatwick Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.1
Good
596 reviews
Check prices

Comfort

7.0

Overall

7.1

Entertainment

7.0

Food

6.2

Boarding

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
Icelandair
7.1
Good
596 reviews
Icelandair
7.1
Good
596 reviews
Check prices

Comfort

7.0

Overall

7.1

Entertainment

7.0

Food

6.2

Boarding

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
British Airways
6.7
Okay
7,680 reviews
Icelandair
7.1
Good
596 reviews
Check prices

Comfort

7.0

Overall

7.1

Entertainment

7.0

Food

6.2

Boarding

7.2

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Gatwick Airport to Illinois?

    There are many flights that can get you from London Gatwick Airport to Illinois in 11h 25m. Fly via Icelandair, British Airways, or Air France to get the fastest option. The distance between London Gatwick Airport and Illinois is about 3960 mi. This flight may include one or multiple stops.

  • What are the most popular routes from London Gatwick Airport to Illinois?

    The most popular route from London Gatwick Airport to Illinois is London Gatwick - Chicago O'Hare Intl. You may also consider London Gatwick - Lambert-St Louis or London Gatwick - Chicago Midway.

  • Can I find deals for flights from Gatwick to Illinois that include hotel bookings?

    Yes. In addition to deals on Gatwick to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Illinois.

  • Can I find deals for business class flights from Gatwick to Illinois?

    Yes. Cheapflights offers flight deals from Gatwick to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Gatwick Airport to Illinois?

    Currently, December is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of £218). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £513). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Gatwick to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Gatwick to Illinois

Discover the top airline that operate flights from Gatwick to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£314Average£515FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Gatwick to Illinois?

When you search for this flight from Gatwick to Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Illinois?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Gatwick to Illinois for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Gatwick to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Gatwick shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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