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Cheap flights from London Gatwick Airport to Illinois from £338

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
30 May — 6 Jun1
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 30 April 2026.

Fri 5/616:25
LGW
-
ORD
2 stops31h 50m
Multiple Airlines
Sun 14/619:25
ORD
-
LGW
3 stops31h 05m
Multiple Airlines
Deal found 28/4£517
Wed 7/1015:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Mon 12/1019:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 27/4£518
Tue 2/609:40
LGW
-
ORD
2 stops16h 36m
Multiple Airlines
Sat 6/614:00
ORD
-
LGW
1 stop14h 45m
Multiple Airlines
Deal found 29/4£523
Tue 16/618:00
LGW
-
ORD
2 stops33h 25m
Multiple Airlines
Wed 24/619:25
ORD
-
LGW
2 stops20h 20m
Multiple Airlines
Deal found 29/4£524
Thu 14/508:40
LGW
-
ORD
1 stop16h 35m
Multiple Airlines
Wed 27/521:00
ORD
-
LGW
1 stop17h 10m
Multiple Airlines
Deal found 28/4£525
Wed 9/915:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Wed 23/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 28/4£525
Thu 5/1111:35
LGW
-
ORD
1 stop12h 20m
Multiple Airlines
Sun 8/1115:55
ORD
-
LGW
1 stop10h 30m
Multiple Airlines
Deal found 28/4£527
Mon 11/508:40
LGW
-
ORD
1 stop16h 35m
Multiple Airlines
Mon 25/521:00
ORD
-
LGW
1 stop14h 55m
Multiple Airlines
Deal found 26/4£528
Mon 1/612:20
LGW
-
ORD
1 stop25h 40m
JetBlue
Sun 7/608:49
ORD
-
LGW
1 stop18h 46m
JetBlue
Deal found 26/4£531
Mon 14/915:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Mon 28/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 30/4£533
Wed 28/1011:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Wed 11/1118:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 27/4£534
Sat 30/511:35
LGW
-
MDW
2 stops33h 00m
Multiple Airlines
Sat 6/610:15
MDW
-
LGW
2 stops17h 35m
Multiple Airlines
Deal found 29/4£627

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 30 April 2026.

Round-trip from

£517

One-way from

£338

Popular in

July

Cheapest in

February

Average price

£554
5/6-14/6
  • 5/6-14/6
  • 5 total stops
  • 62h 55m total
  • London to Illinois
Search Deals
30/5
  • 30/5
  • 1 total stop
  • 15h 57m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 30 April 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

09:25-15:55

1 stop12h 30m

Chicago O'Hare Intl

Tue 6/10

21:35-17:50

2 stops14h 15m

£622

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sat 30/5

11:35-14:35

2 stops33h 00m

Chicago Midway

Sat 6/6

10:15-09:50

2 stops17h 35m

£627

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 21/9

10:25-21:45

2 stops17h 20m

Chicago O'Hare Intl

Mon 5/10

07:00-09:40

2 stops20h 40m

£642

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Thu 28/5

10:45-14:35

2 stops33h 50m

Chicago Midway

Thu 4/6

15:20-10:45

1 stop13h 25m

£690

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 22/9

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Tue 29/9

14:15-14:40

2 stops18h 25m

£708

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Mon 29/6

11:35-09:40

2 stops28h 05m

Chicago Midway

Wed 8/7

10:25-09:50

2 stops17h 25m

£708

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 18/8

21:15-16:00

2 stops24h 45m

Chicago O'Hare Intl

Thu 20/8

19:50-09:45

1 stop31h 55m

£713

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 5/7

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Sat 11/7

11:25-13:10

1 stop19h 45m

£725
Fastest return journey

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 24/6

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Fri 3/7

19:25-14:40

1 stop13h 15m

£737

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Mon 22/6

15:40-09:40

2 stops24h 00m

Chicago Midway

Thu 25/6

15:20-10:45

1 stop13h 25m

£740

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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 £172). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £510). 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 30 April 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
646 reviews
Check prices

Entertainment

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.0

Comfort

6.9

Reviews

1 / 20
10.0
Excellent

Ásmundur,Apr 2026

CDG - KEF

The flight was uneventfull and ahead of schedule. The crew was attentive and the service good.
Icelandair
7.0
Good
646 reviews
Icelandair
7.0
Good
646 reviews
Check prices

Entertainment

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.0

Comfort

6.9

Reviews

1 / 20
10.0
Excellent

Ásmundur,Apr 2026

CDG - KEF

The flight was uneventfull and ahead of schedule. The crew was attentive and the service good.

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 SWISS, Virgin Atlantic, or Icelandair 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 £172). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £510). 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 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£347Average£510FlexibilityNo 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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