Find flights
When to book
Airlines
FAQs

Cheap flights from London Gatwick Airport to Illinois from £285

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 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
21 Mar — 28 Mar1
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 19 February 2026.

Sun 1/311:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Tue 10/319:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 15/2£398
Tue 24/211:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Tue 3/318:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 15/2£399
Thu 23/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Wed 29/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 17/2£402
Sun 12/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Sat 25/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 17/2£402
Mon 13/415:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Mon 27/419:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 17/2£403
Thu 5/310:40
LGW
-
ORD
1 stop34h 45m
TAP AIR PORTUGAL
Sun 8/321:25
ORD
-
LGW
1 stop31h 25m
TAP AIR PORTUGAL
Deal found 18/2£404
Wed 11/311:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Tue 17/319:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 16/2£405
Tue 3/311:55
LGW
-
ORD
1 stop11h 25m
Icelandair
Tue 10/319:30
ORD
-
LGW
1 stop10h 25m
Icelandair
Deal found 16/2£407
Thu 26/216:00
LGW
-
ORD
1 stop29h 25m
TAP AIR PORTUGAL
Sun 1/320:25
ORD
-
LGW
1 stop31h 25m
TAP AIR PORTUGAL
Deal found 16/2£408
Fri 13/314:00
LGW
-
MDW
1 stop14h 51m
Multiple Airlines
Fri 20/321:51
MDW
-
LGW
1 stop31h 14m
Multiple Airlines
Deal found 15/2£456
Fri 24/413:05
LGW
-
MDW
1 stop29h 55m
Multiple Airlines
Sat 16/507:30
MDW
-
LGW
1 stop16h 50m
Multiple Airlines
Deal found 17/2£485
Wed 13/514:00
LGW
-
MDW
1 stop24h 04m
Multiple Airlines
Sun 17/507:30
MDW
-
LGW
1 stop16h 50m
Multiple Airlines
Deal found 17/2£505

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 19 February 2026.

Round-trip from

£398

One-way from

£285

Popular in

July

Cheapest in

September

Average price

£433
Icelandair
  • Icelandair
  • 1/3-10/3
  • 2 total stops
  • 21h 50m total
  • London to Illinois
Search Deals
26/2
  • 26/2
  • 1 total stop
  • 15h 59m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£58 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 February 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 19 February 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 13/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Thu 23/4

19:25-14:40

1 stop13h 15m

£414

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 19/4

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Tue 12/5

19:25-14:40

1 stop13h 15m

£419

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 20/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Tue 12/5

19:25-14:40

1 stop13h 15m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 18/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Sat 9/5

19:25-11:45

1 stop10h 20m

£420

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 15/5

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Sun 17/5

22:25-14:40

1 stop10h 15m

£422

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 22/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Mon 11/5

19:25-11:45

1 stop10h 20m

£430

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 4/3

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Tue 10/3

19:30-10:55

1 stop10h 25m

£433

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 27/4

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Mon 4/5

19:25-11:45

1 stop10h 20m

£436

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 5/3

16:00-15:25

1 stop29h 25m

Chicago O'Hare Intl

Sun 8/3

21:25-20:35

2 stops18h 10m

£453

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 13/3

14:00-23:51

1 stop14h 51m

Chicago Midway

Fri 20/3

21:51-10:05

1 stop31h 14m

£456

Flights are sorted by cheapest return flights first.

Deals found on 15/2

Showing 1-10 of 59 results
1
2
3
...
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 £216). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £508). 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 19 February 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
615 reviews
Check prices

Food

6.2

Boarding

7.2

Comfort

7.0

Entertainment

7.0

Overall

7.1

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
615 reviews
Icelandair
7.1
Good
615 reviews
Check prices

Food

6.2

Boarding

7.2

Comfort

7.0

Entertainment

7.0

Overall

7.1

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
7,752 reviews
Icelandair
7.1
Good
615 reviews
Check prices

Food

6.2

Boarding

7.2

Comfort

7.0

Entertainment

7.0

Overall

7.1

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 27h 48m. Fly via Icelandair, British Airways, or Iberia to get the fastest option. The distance between London Gatwick Airport and Illinois is about 4065 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 £216). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £508). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Gatwick to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
Heathrow to Dallas/Fort Worth flights
London City to John F Kennedy Intl flights
Heathrow to Orlando flights
Heathrow to Miami flights
Gatwick to John F Kennedy Intl flights
Stansted to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Gatwick to LaGuardia flights
London City to Newark flights
Heathrow to Boston flights
Luton to John F Kennedy Intl flights
Heathrow to San Francisco flights
Gatwick to Orlando flights
Gatwick to Dallas/Fort Worth flights
Luton to Newark flights
Heathrow to Las Vegas flights
Stansted to Newark flights
Heathrow to Seattle flights
Heathrow to O'Hare Intl flights
Gatwick to Miami flights
Heathrow to Dulles Intl flights
Gatwick to Boston flights
Heathrow to Hobby flights
London City to Dallas/Fort Worth flights
Stansted to Dallas/Fort Worth flights
London City to Miami flights
Heathrow to Atlanta flights
Stansted to Miami flights
Gatwick to Los Angeles flights
Heathrow to Tampa flights
Stansted to Orlando flights
Stansted to Los Angeles flights
Heathrow to George Bush Intcntl flights
Heathrow to Love Field flights
Luton to Dallas/Fort Worth flights
Heathrow to Baltimore flights
London City to Los Angeles flights
London City to Boston flights
London City to Orlando flights
Luton to Miami flights
Heathrow to Denver flights
Gatwick to Las Vegas flights
Heathrow to Ontario flights
Heathrow to Nashville flights
Heathrow to Fort Lauderdale flights
Stansted to Boston flights

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 19 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£339Average£503FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.