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Cheap flights from London Gatwick Airport to Illinois from £235

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
3 Feb — 10 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 4 January 2026.

Wed 7/1015:40LGW - ORD
1 stop11h 45mIcelandair
Mon 19/1019:25ORD - LGW
1 stop13h 15mIcelandair
Deal found 3/1£406
Mon 26/111:20LGW - ORD
1 stop29h 00mAmerican Airlines
Sat 18/418:47ORD - LGW
1 stop31h 53mAmerican Airlines
Deal found 2/1£406
Fri 23/114:00LGW - MDW
2 stops24h 43mMultiple Airlines
Mon 9/213:00MDW - LGW
1 stop15h 00mMultiple Airlines
Deal found 2/1£407
Tue 24/219:45LGW - ORD
2 stops25h 10mMultiple Airlines
Mon 16/312:05ORD - LGW
1 stop12h 55mMultiple Airlines
Deal found 3/1£407
Mon 16/218:40LGW - ORD
1 stop24h 05mSWISS
Mon 23/218:50ORD - LGW
1 stop17h 00mSWISS
Deal found 2/1£408
Fri 23/114:00LGW - STL
1 stop27h 11mMultiple Airlines
Thu 5/217:42STL - LGW
1 stop34h 18mMultiple Airlines
Deal found 4/1£409
Mon 23/214:00LGW - ORD
1 stop15h 15mMultiple Airlines
Tue 17/312:05ORD - LGW
1 stop12h 55mMultiple Airlines
Deal found 3/1£409
Fri 23/113:00LGW - ORD
1 stop15h 42mMultiple Airlines
Sun 25/120:43ORD - LGW
2 stops27h 17mMultiple Airlines
Deal found 2/1£410
Wed 25/213:00LGW - ORD
1 stop35h 29mMultiple Airlines
Sun 15/316:18ORD - LGW
2 stops32h 42mMultiple Airlines
Deal found 2/1£412
Mon 27/415:40LGW - ORD
1 stop32h 35mIcelandair
Mon 25/519:25ORD - LGW
1 stop10h 20mIcelandair
Deal found 3/1£412
Fri 20/214:00LGW - MDW
1 stop30h 55mMultiple Airlines
Fri 27/207:30MDW - LGW
1 stop20h 30mMultiple Airlines
Deal found 3/1£413
Tue 27/111:45LGW - ORD
2 stops36h 02mBritish Airways
Sat 18/418:47ORD - LGW
1 stop31h 53mBritish Airways
Deal found 2/1£414

Find flight deals from Gatwick to Illinois

Keep the following information in mind while searching for Gatwick to Illinois flight deals. Data was last updated 4 January 2026.

Round-trip from

£406

One-way from

£235

Popular in

July

Cheapest in

February

Average price

£461
American Airlines
  • American Airlines
  • 26/1-18/4
  • 2 total stops
  • 64h 08m total
  • London to Illinois
Search Deals
9/2
  • 9/2
  • 1 total stop
  • 15h 33m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£65 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

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 4 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

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 23/1

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Thu 5/2

17:42-10:00

1 stop34h 18m

£409

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 20/2

14:00-14:55

1 stop30h 55m

Chicago Midway

Fri 27/2

07:30-10:00

1 stop20h 30m

£413

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 28/1

11:45-17:42

2 stops35h 57m

Chicago O'Hare Intl

Tue 21/4

18:47-08:40

1 stop31h 53m

£414

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 30/1

11:45-17:47

2 stops36h 02m

Chicago O'Hare Intl

Sat 18/4

16:55-08:40

1 stop33h 45m

£414

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 31/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Fri 17/4

19:25-14:40

1 stop13h 15m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 27/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Thu 16/4

19:25-14:40

1 stop13h 15m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 30/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Thu 16/4

19:25-14:40

1 stop13h 15m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 26/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Fri 17/4

22:25-14:40

1 stop10h 15m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 27/1

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Fri 17/4

19:25-14:40

1 stop13h 15m

£417

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 1/2

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Thu 16/4

19:25-14:40

1 stop13h 15m

£421

Flights are sorted by cheapest return flights first.

Deals found on 3/1

Showing 1-10 of 60 results
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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 £511). 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 4 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
593 reviews
Check prices

Boarding

7.2

Comfort

6.9

Food

6.2

Overall

7.1

Entertainment

7.0

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
593 reviews
Icelandair
7.1
Good
593 reviews
Check prices

Boarding

7.2

Comfort

6.9

Food

6.2

Overall

7.1

Entertainment

7.0

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
7,643 reviews
Icelandair
7.1
Good
593 reviews
Check prices

Boarding

7.2

Comfort

6.9

Food

6.2

Overall

7.1

Entertainment

7.0

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 British Airways, Icelandair, or Iberia 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 - Chicago Midway or London Gatwick - Lambert-St Louis.

  • 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 £511). 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 4 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£313Average£514FlexibilityNo 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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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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