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Cheap flights from London Gatwick Airport to Illinois from £272

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
29 Jul — 5 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 29 June 2026.

Tue 25/820:45
LGW
-
ORD
3 stops30h 40m
Multiple Airlines
Mon 31/819:25
ORD
-
LGW
2 stops18h 05m
Multiple Airlines
Deal found 28/6£525
Thu 5/1116:00
LGW
-
ORD
1 stop29h 30m
TAP AIR PORTUGAL
Sun 8/1120:10
ORD
-
LGW
2 stops18h 25m
TAP AIR PORTUGAL
Deal found 28/6£526
Wed 7/1016:25
LGW
-
ORD
1 stop26h 15m
TAP AIR PORTUGAL
Wed 14/1018:00
ORD
-
LGW
2 stops20h 30m
TAP AIR PORTUGAL
Deal found 26/6£527
Wed 2/914:00
LGW
-
ORD
1 stop15h 08m
Multiple Airlines
Sat 5/922:25
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 27/6£532
Fri 2/1015:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Tue 6/1019:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 29/6£532
Wed 9/906:00
LGW
-
ORD
3 stops22h 05m
Multiple Airlines
Wed 23/915:45
ORD
-
LGW
3 stops35h 25m
Multiple Airlines
Deal found 27/6£533
Mon 20/712:20
LGW
-
ORD
1 stop12h 55m
JetBlue
Sat 25/713:09
ORD
-
LGW
1 stop14h 26m
JetBlue
Deal found 25/6£535
Tue 15/915:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 1/1019:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 27/6£535
Fri 4/914:00
LGW
-
ORD
2 stops31h 59m
Multiple Airlines
Sun 6/922:25
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 25/6£536
Thu 3/914:00
LGW
-
ORD
1 stop15h 08m
Multiple Airlines
Sat 5/922:25
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 26/6£537
Wed 9/916:25
LGW
-
ORD
1 stop26h 15m
TAP AIR PORTUGAL
Wed 23/918:00
ORD
-
LGW
1 stop14h 00m
TAP AIR PORTUGAL
Deal found 28/6£538
Fri 17/709:40
LGW
-
MDW
2 stops30h 00m
Multiple Airlines
Wed 22/710:25
MDW
-
LGW
2 stops17h 25m
Multiple Airlines
Deal found 24/6£648

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 29 June 2026.

Round-trip from

£525

One-way from

£272

Popular in

July

Cheapest in

February

Average price

£682
25/8-31/8
  • 25/8-31/8
  • 5 total stops
  • 48h 45m total
  • London to Illinois
Search Deals
21/9
  • 21/9
  • 2 total stops
  • 49h 40m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£82 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 June 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 29 June 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

Wed 9/9

16:25-12:40

1 stop26h 15m

Chicago O'Hare Intl

Wed 23/9

18:00-14:00

1 stop14h 00m

£538

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 4/9

12:20-19:26

1 stop13h 06m

Chicago O'Hare Intl

Sat 5/9

13:49-09:35

1 stop13h 46m

£557

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 14/7

21:15-12:40

2 stops45h 25m

Chicago O'Hare Intl

Thu 23/7

16:45-11:20

2 stops36h 35m

£637

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 18/12

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Tue 22/12

18:30-10:55

1 stop10h 25m

£663

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 20/12

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 23/12

18:30-10:55

1 stop10h 25m

£663

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 24/7

12:20-19:15

1 stop12h 55m

Chicago O'Hare Intl

Tue 28/7

10:56-09:35

1 stop16h 39m

£685

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 17/7

09:40-09:40

2 stops30h 00m

Chicago Midway

Sat 25/7

10:25-11:20

2 stops18h 55m

£692

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 23/7

12:20-19:15

1 stop12h 55m

Chicago O'Hare Intl

Tue 28/7

10:56-09:35

1 stop16h 39m

£700

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 21/7

21:15-16:00

2 stops24h 45m

Chicago O'Hare Intl

Thu 6/8

19:45-20:25

2 stops18h 40m

£707

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
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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 £176). Flying from London Gatwick Airport to Illinois in June is currently the most expensive (average of £600). 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 29 June 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
692 reviews
Check prices

Entertainment

6.9

Food

6.2

Crew

8.0

Overall

7.0

Comfort

6.9

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.
Icelandair
7.0
Good
692 reviews
Icelandair
7.0
Good
692 reviews
Check prices

Entertainment

6.9

Food

6.2

Crew

8.0

Overall

7.0

Comfort

6.9

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.

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 13h 06m. Fly via TAP AIR PORTUGAL, JetBlue, 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 - 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 £176). Flying from London Gatwick Airport to Illinois in June is currently the most expensive (average of £600). 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 29 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£355Average£492FlexibilityNo 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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