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Cheap flights from London Gatwick Airport to Illinois from £289

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
21 Apr — 28 Apr1
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 22 March 2026.

Wed 15/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Sun 19/422:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 20/3£444
Fri 17/415:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Fri 24/422:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 18/3£447
Tue 14/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Tue 21/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 17/3£447
Fri 24/415:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Mon 27/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 21/3£448
Mon 20/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Mon 27/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 21/3£450
Thu 16/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Tue 21/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 20/3£452
Thu 16/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 23/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 19/3£453
Mon 20/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Mon 4/519:25
ORD
-
LGW
1 stop10h 20m
Icelandair
Deal found 18/3£454
Thu 30/413:00
LGW
-
ORD
1 stop11h 15m
Icelandair
Wed 6/519:25
ORD
-
LGW
1 stop10h 20m
Icelandair
Deal found 20/3£456
Wed 29/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Sat 9/519:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 21/3£457
Sun 19/414:00
LGW
-
MDW
1 stop24h 04m
Multiple Airlines
Sun 26/414:00
MDW
-
LGW
1 stop14h 00m
Multiple Airlines
Deal found 21/3£552
Wed 22/414:00
LGW
-
MDW
1 stop23h 26m
Multiple Airlines
Wed 29/407:30
MDW
-
LGW
2 stops20h 15m
Multiple Airlines
Deal found 19/3£580

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 22 March 2026.

Round-trip from

£444

One-way from

£289

Popular in

July

Cheapest in

September

Average price

£562
Icelandair
  • Icelandair
  • 15/4-19/4
  • 2 total stops
  • 42h 50m total
  • London to Illinois
Search Deals
29/5
  • 29/5
  • 1 total stop
  • 16h 21m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£56 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 March 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 22 March 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
Fastest return journey

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 17/4

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Sun 19/4

22:25-14:40

1 stop10h 15m

£476

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Wed 22/4

14:00-07:26

1 stop23h 26m

Chicago Midway

Wed 29/4

07:30-09:45

2 stops20h 15m

£580

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sun 19/4

14:00-08:04

1 stop24h 04m

Chicago Midway

Sun 26/4

07:30-06:20

1 stop16h 50m

£585

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 28/4

09:25-15:55

1 stop12h 30m

Chicago O'Hare Intl

Tue 5/5

21:30-17:50

2 stops14h 20m

£612

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Wed 6/5

10:25-22:28

2 stops18h 03m

Chicago Midway

Wed 13/5

13:59-09:25

2 stops13h 26m

£624

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sat 11/4

14:00-23:05

1 stop15h 05m

Chicago Midway

Sat 25/4

19:34-10:00

2 stops32h 26m

£630

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 29/6

12:20-19:25

1 stop13h 05m

Chicago O'Hare Intl

Wed 29/7

10:48-09:35

1 stop16h 47m

£632

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 14/4

09:25-15:55

1 stop12h 30m

Chicago O'Hare Intl

Mon 20/4

21:30-17:50

2 stops14h 20m

£644

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 17/4

12:05-16:05

2 stops34h 00m

Chicago O'Hare Intl

Sun 19/4

18:00-11:20

2 stops35h 20m

£646

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Wed 16/9

10:25-21:46

2 stops17h 21m

Chicago Midway

Wed 23/9

17:59-16:00

2 stops16h 01m

£654

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 56 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 £220). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £516). 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 22 March 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
625 reviews
Check prices

Entertainment

7.0

Food

6.2

Boarding

7.2

Crew

8.0

Overall

7.0

Comfort

6.9

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
7.0
Good
625 reviews
Icelandair
7.0
Good
625 reviews
Check prices

Entertainment

7.0

Food

6.2

Boarding

7.2

Crew

8.0

Overall

7.0

Comfort

6.9

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 45m. Fly via Icelandair, SWISS, or Delta 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 £220). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £516). 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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£344Average£508FlexibilityNo 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.

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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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