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Cheap flights from London Gatwick Airport to Illinois from £275

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ORD
10 Jul — 17 Jul1
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 10 June 2026.

Wed 9/921:15
LGW
-
ORD
2 stops21h 25m
TAP AIR PORTUGAL
Wed 23/918:00
ORD
-
LGW
1 stop14h 00m
TAP AIR PORTUGAL
Deal found 6/6£544
Sun 30/815:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Fri 2/1022:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 7/6£546
Fri 10/712:20
LGW
-
ORD
1 stop12h 55m
JetBlue
Fri 17/720:10
ORD
-
LGW
1 stop31h 25m
JetBlue
Deal found 7/6£547
Tue 25/821:35
LGW
-
ORD
2 stops28h 17m
Multiple Airlines
Tue 8/922:25
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 7/6£548
Mon 15/609:40
LGW
-
ORD
2 stops33h 30m
Multiple Airlines
Sun 28/615:00
ORD
-
LGW
2 stops26h 10m
Multiple Airlines
Deal found 8/6£549
Wed 8/712:20
LGW
-
ORD
1 stop13h 11m
JetBlue
Wed 15/720:10
ORD
-
LGW
1 stop31h 25m
JetBlue
Deal found 7/6£550
Sun 30/813:00
LGW
-
ORD
1 stop14h 25m
Icelandair
Mon 28/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 7/6£551
Thu 17/918:35
LGW
-
ORD
1 stop24h 00m
SWISS
Sun 20/914:20
ORD
-
LGW
1 stop12h 05m
SWISS
Deal found 6/6£552
Tue 14/712:20
LGW
-
ORD
1 stop12h 55m
JetBlue
Fri 24/720:10
ORD
-
LGW
1 stop31h 25m
JetBlue
Deal found 6/6£553
Thu 3/921:30
LGW
-
ORD
2 stops28h 22m
Multiple Airlines
Thu 10/919:25
ORD
-
LGW
1 stop13h 15m
Multiple Airlines
Deal found 7/6£554
Mon 15/615:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Thu 24/919:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 6/6£555
Fri 4/912:20
LGW
-
ORD
1 stop13h 05m
JetBlue
Sun 6/910:56
ORD
-
LGW
1 stop16h 39m
JetBlue
Deal found 6/6£556

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 10 June 2026.

Round-trip from

£544

One-way from

£275

Popular in

July

Cheapest in

February

Average price

£658
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 9/9-23/9
  • 3 total stops
  • 35h 25m total
  • London to Illinois
Search Deals
2/9
  • 2/9
  • 2 total stops
  • 48h 52m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£74 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 10 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 - MDW

LGWMDW

London Gatwick

Tue 30/6

09:40-14:35

2 stops34h 55m

Chicago Midway

Mon 6/7

10:25-09:50

2 stops17h 25m

£612

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Wed 1/7

11:35-09:40

2 stops28h 05m

Chicago Midway

Fri 10/7

10:25-07:55

2 stops15h 30m

£619

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 22/6

12:20-19:25

1 stop13h 05m

Chicago O'Hare Intl

Thu 23/7

10:56-09:35

1 stop16h 39m

£644

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 26/6

12:20-19:25

1 stop13h 05m

Chicago O'Hare Intl

Fri 24/7

10:56-09:35

1 stop16h 39m

£646

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 3/7

09:40-09:40

2 stops30h 00m

Chicago Midway

Fri 10/7

10:25-07:55

2 stops15h 30m

£656

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Thu 25/6

11:35-09:40

2 stops28h 05m

Chicago Midway

Tue 14/7

10:25-07:55

2 stops15h 30m

£662

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 16/9

15:40-21:25

1 stop11h 45m

Chicago O'Hare Intl

Wed 23/9

14:15-14:40

2 stops18h 25m

£671

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Wed 24/6

11:35-14:35

2 stops33h 00m

Chicago Midway

Tue 30/6

10:25-07:55

2 stops15h 30m

£683

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 21/11

16:35-15:30

1 stop28h 55m

Chicago O'Hare Intl

Wed 25/11

19:00-10:00

2 stops33h 00m

£688

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 10/7

09:40-09:40

2 stops30h 00m

Chicago Midway

Mon 13/7

10:25-09:50

2 stops17h 25m

£694

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 59 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 £173). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £514). 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 10 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
670 reviews
Check prices

Boarding

7.2

Entertainment

6.9

Overall

7.0

Comfort

6.9

Food

6.2

Crew

8.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
7.0
Good
670 reviews
Icelandair
7.0
Good
670 reviews
Check prices

Boarding

7.2

Entertainment

6.9

Overall

7.0

Comfort

6.9

Food

6.2

Crew

8.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

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 JetBlue, Icelandair, or TAP AIR PORTUGAL 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 £173). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £514). 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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£352Average£508FlexibilityNo 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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