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Cheap flights from London Gatwick Airport to Illinois from £286

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 20/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
8 Aug — 15 Aug1
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 9 July 2026.

Sat 12/915:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 17/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 6/7£515
Tue 22/921:35
LGW
-
ORD
3 stops28h 13m
Multiple Airlines
Tue 29/919:25
ORD
-
LGW
2 stops21h 25m
Multiple Airlines
Deal found 7/7£515
Fri 18/915:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Thu 24/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 4/7£516
Wed 7/1016:25
LGW
-
ORD
1 stop26h 15m
TAP AIR PORTUGAL
Sun 11/1018:00
ORD
-
LGW
2 stops20h 25m
TAP AIR PORTUGAL
Deal found 5/7£517
Thu 8/1015:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Tue 13/1019:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 6/7£518
Sun 20/915:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Fri 25/922:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 6/7£518
Mon 2/1121:35
LGW
-
ORD
2 stops47h 55m
TAP AIR PORTUGAL
Sun 8/1120:10
ORD
-
LGW
1 stop13h 35m
TAP AIR PORTUGAL
Deal found 8/7£519
Wed 14/1016:25
LGW
-
ORD
1 stop26h 15m
TAP AIR PORTUGAL
Wed 21/1018:00
ORD
-
LGW
2 stops35h 20m
TAP AIR PORTUGAL
Deal found 6/7£521
Thu 27/814:00
LGW
-
ORD
1 stop15h 08m
Multiple Airlines
Sun 20/922:25
ORD
-
LGW
2 stops13h 35m
Multiple Airlines
Deal found 8/7£522
Thu 27/811:05
LGW
-
ORD
2 stops13h 10m
Multiple Airlines
Mon 31/819:25
ORD
-
LGW
2 stops19h 30m
Multiple Airlines
Deal found 4/7£524
Mon 24/806:55
LGW
-
ORD
2 stops20h 30m
Multiple Airlines
Tue 8/922:25
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 7/7£525
Sun 8/1110:00
LGW
-
MDW
2 stops18h 25m
Virgin Atlantic
Thu 12/1112:30
MDW
-
LGW
2 stops14h 30m
Virgin Atlantic
Deal found 6/7£649

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 9 July 2026.

Round-trip from

£515

One-way from

£286

Popular in

July

Cheapest in

February

Average price

£694
Icelandair
  • Icelandair
  • 12/9-17/9
  • 2 total stops
  • 45h 50m total
  • London to Illinois
Search Deals
20/9
  • 20/9
  • 2 total stops
  • 49h 40m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£78 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 July 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 9 July 2026.
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

Cheapest return flight

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 15/9

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Mon 21/9

19:25-14:40

1 stop13h 15m

£566

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 27/8

14:50-16:00

1 stop31h 10m

Chicago O'Hare Intl

Sat 5/9

18:05-20:25

2 stops20h 20m

£613

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 25/8

09:25-15:55

1 stop12h 30m

Chicago O'Hare Intl

Thu 17/9

14:20-08:25

1 stop12h 05m

£640

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 27/7

12:20-19:15

1 stop12h 55m

Chicago O'Hare Intl

Wed 12/8

11:01-09:35

1 stop16h 34m

£695

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 19/8

14:00-16:11

1 stop32h 11m

Lambert-St Louis

Mon 24/8

16:23-10:00

1 stop35h 37m

£712

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 18/8

21:15-16:00

2 stops24h 45m

Chicago O'Hare Intl

Thu 20/8

19:50-20:25

2 stops18h 35m

£713

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 4/12

10:00-16:15

1 stop12h 15m

Chicago O'Hare Intl

Tue 29/12

18:25-15:45

1 stop15h 20m

£717

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Mon 31/8

10:25-22:36

2 stops18h 11m

Chicago Midway

Mon 14/9

10:48-09:40

2 stops16h 52m

£723
Fastest return journey

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 19/8

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Sat 13/3

18:30-10:55

1 stop10h 25m

£729

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 9/9

21:15-12:40

2 stops21h 25m

Chicago O'Hare Intl

Wed 23/9

09:38-09:45

2 stops18h 07m

£743

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 £174). Flying from London Gatwick Airport to Illinois in June is currently the most expensive (average of £592). 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.

How much does it cost for a return flight from London Gatwick Airport to Illinois?

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 9 July 2026.
See what other customers who have flown with Icelandair 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
7.0
Good
702 reviews
Check prices

Food

6.2

Crew

8.0

Overall

7.0

Boarding

7.2

Comfort

6.9

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Sara,Jul 2026

KEF - IAD

It was frustrating to be seated next to two children whose parents were not immediately adjacent to them. The parents were disengaged with their kids and I ended up having to assist/direct children who were not my own.
Icelandair
7.0
Good
702 reviews
Icelandair
7.0
Good
702 reviews
Check prices

Food

6.2

Crew

8.0

Overall

7.0

Boarding

7.2

Comfort

6.9

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Sara,Jul 2026

KEF - IAD

It was frustrating to be seated next to two children whose parents were not immediately adjacent to them. The parents were disengaged with their kids and I ended up having to assist/direct children who were not my own.

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 12h 30m. Fly via Icelandair, TAP AIR PORTUGAL, or SWISS 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 £174). Flying from London Gatwick Airport to Illinois in June is currently the most expensive (average of £592). 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 9 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£351Average£486FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

Can Cheapflights notify me if prices for flights from Gatwick to Illinois become cheaper?

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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