What are the cheapest airlines to fly from London Gatwick Airport to Illinois one-way?

One-way options have recently been found by users for as low as £421 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Icelandair from £439 and WestJet from £471 one-way.

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.

How far in advance should I book a flight from London Gatwick Airport to Illinois?

Users have found that booking a flight from London Gatwick Airport to Illinois at least 45 days early can save you up to 16% on average compared to booking a flight this week. If booking 45 days before your flight isn’t an option for you, users have found flights from London Gatwick Airport to Illinois for as little as £523 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £610 for flights departing within the next 3 days.

What is the cheapest month to fly from London Gatwick Airport to Illinois?

February is one of the best times of the year to fly to Illinois from London Gatwick Airport. Prices for February average £529 per person but you can even find prices for as low as £319. The most expensive prices can be found in the month of August. Opting for a February flight can save you 27% on your journey compared to booking in August

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.

£260+ Flights from London Gatwick Airport to Illinois - Compare & Save Big

Cheap flight deals from Gatwick to Illinois

Round-trip from	£414
One-way from	£260
Popular in	August
Cheapest in	February
Average price	£504

Finnair
15/5-19/5
3 total stops
38h 17m total
London to Illinois

Search Deals

29/5
1 total stop
15h 52m total
London to Illinois

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Gatwick to Illinois

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 2025.

Thu 15/510:40LGW - ORD

1 stop16h 42mFinnair

Mon 19/505:00ORD - LGW

2 stops21h 35mFinnair

Deal found 30/4£414

Thu 25/915:40LGW - ORD

1 stop32h 35mIcelandair

Mon 29/919:25ORD - LGW

1 stop13h 10mIcelandair

Deal found 29/4£416

Tue 20/513:40LGW - ORD

2 stops23h 47mMultiple Airlines

Fri 11/713:03ORD - LGW

1 stop14h 57mMultiple Airlines

Deal found 29/4£438

Sun 10/814:45LGW - ORD

2 stops21h 31mAmerican Airlines

Tue 9/912:49ORD - LGW

1 stop13h 21mAmerican Airlines

Deal found 30/4£438

Fri 30/512:40LGW - MDW

1 stop26h 05mMultiple Airlines

Mon 2/609:40MDW - LGW

2 stops18h 10mMultiple Airlines

Deal found 29/4£461

Sun 10/814:45LGW - ORD

1 stop34h 17mBritish Airways

Tue 9/920:25ORD - LGW

1 stop29h 45mBritish Airways

Deal found 30/4£464

Tue 17/612:00LGW - ORD

1 stop15h 43mVirgin Atlantic

Tue 24/611:20ORD - LGW

2 stops16h 40mVirgin Atlantic

Deal found 30/4£488

Tue 10/611:35LGW - ORD

1 stop13h 15mIberia

Wed 25/616:30ORD - LGW

1 stop21h 30mIberia

Deal found 30/4£494

Tue 13/518:35LGW - ORD

1 stop24h 10mSWISS

Sun 18/519:05ORD - LGW

1 stop16h 45mSWISS

Deal found 29/4£510

Wed 18/614:00LGW - STL

1 stop15h 53mMultiple Airlines

Sat 21/617:47STL - LGW

1 stop34h 23mMultiple Airlines

Deal found 29/4£597

Fri 12/910:40LGW - STL

2 stops18h 43mFinnair

Sat 20/907:34STL - LGW

2 stops18h 36mFinnair

Deal found 29/4£791

Mon 16/612:20LGW - STL

2 stops17h 39mAmerican Airlines

Mon 30/607:50STL - LGW

2 stops16h 45mAmerican Airlines

Deal found 28/4£878

Best flights from Gatwick to Illinois
Discover carefully curated flight deals from Gatwick to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Thu 15/510:40LGW - ORD

1 stop16h 42mFinnair

Mon 19/505:00ORD - LGW

2 stops21h 35mFinnair

Deal found 30/4£414

Thu 25/915:40LGW - ORD

1 stop32h 35mIcelandair

Mon 29/919:25ORD - LGW

1 stop13h 10mIcelandair

Deal found 29/4£416

Tue 20/513:40LGW - ORD

2 stops23h 47mMultiple Airlines

Fri 11/713:03ORD - LGW

1 stop14h 57mMultiple Airlines

Deal found 29/4£438

Sun 10/814:45LGW - ORD

2 stops21h 31mAmerican Airlines

Tue 9/912:49ORD - LGW

1 stop13h 21mAmerican Airlines

Deal found 30/4£438

Sun 10/814:45LGW - ORD

1 stop34h 17mBritish Airways

Tue 9/920:25ORD - LGW

1 stop29h 45mBritish Airways

Deal found 30/4£464

Tue 17/612:00LGW - ORD

1 stop15h 43mVirgin Atlantic

Tue 24/611:20ORD - LGW

2 stops16h 40mVirgin Atlantic

Deal found 30/4£488

Tue 10/611:35LGW - ORD

1 stop13h 15mIberia

Wed 25/616:30ORD - LGW

1 stop21h 30mIberia

Deal found 30/4£494

Tue 13/518:35LGW - ORD

1 stop24h 10mSWISS

Sun 18/519:05ORD - LGW

1 stop16h 45mSWISS

Deal found 29/4£510

Thu 29/512:00LGW - STL

2 stops17h 26mDelta

Thu 5/613:09STL - LGW

2 stops14h 51mDelta

Deal found 29/4£899

Fri 30/512:40LGW - MDW

1 stop26h 05mMultiple Airlines

Mon 2/609:40MDW - LGW

2 stops18h 10mMultiple Airlines

Deal found 29/4£461

Thu 16/1005:20LGW - STL

2 stops38h 59mTurkish Airlines

Tue 21/1015:30STL - LGW

2 stops42h 45mTurkish Airlines

Deal found 29/4£1,086

Wed 18/614:00LGW - STL

1 stop15h 53mMultiple Airlines

Sat 21/617:47STL - LGW

1 stop34h 23mMultiple Airlines

Deal found 29/4£597

Last-minute flights from Gatwick to Illinois
Discover last-minute flight deals from Gatwick to Illinois. Data last updated 30 April 2025 and is based on user searches.

Wed 30/410:40LGW - STL

2 stops18h 53mAmerican Airlines

Wed 7/509:29STL - LGW

2 stops16h 41mAmerican Airlines

Deal found 29/4£1,154

Fri 2/515:40LGW - ORD

1 stop11h 35mIcelandair

Thu 5/622:15ORD - LGW

1 stop31h 30mIcelandair

Deal found 29/4£418

Mon 5/518:35LGW - ORD

1 stop27h 20mSWISS

Sat 28/320:15ORD - LGW

2 stops15h 35mSWISS

Deal found 29/4£873

Mon 5/514:00LGW - STL

2 stops30h 47mTurkish Airlines

Mon 12/515:43STL - LGW

2 stops36h 12mTurkish Airlines

Deal found 29/4£1,390

Mon 5/514:00LGW - STL

2 stops30h 47mTurkish Airlines

Mon 26/508:10STL - LGW

2 stops32h 10mTurkish Airlines

Deal found 30/4£1,277

Tue 6/521:15LGW - ORD

2 stops24h 55mTAP AIR PORTUGAL

Tue 20/516:03ORD - LGW

2 stops17h 32mTAP AIR PORTUGAL

Deal found 30/4£946

Wed 7/515:40LGW - ORD

1 stop11h 35mIcelandair

Wed 14/519:25ORD - LGW

1 stop10h 20mIcelandair

Deal found 30/4£426

Wed 7/508:50LGW - ORD

2 stops17h 05mMultiple Airlines

Wed 14/519:05ORD - LGW

2 stops19h 35mMultiple Airlines

Deal found 29/4£501

Thu 8/514:00LGW - MDW

1 stop28h 24mMultiple Airlines

Sat 24/509:40MDW - LGW

2 stops18h 10mMultiple Airlines

Deal found 29/4£546

Thu 8/513:05LGW - ORD

2 stops15h 47mNorse Atlantic UK

Sat 24/521:31ORD - LGW

2 stops26h 49mNorse Atlantic UK

Deal found 29/4£736

Thu 8/510:00LGW - ORD

2 stops37h 29mAir Europa

Sat 24/510:31ORD - LGW

2 stops40h 29mAir Europa

Deal found 29/4£2,342

Fri 9/517:15LGW - ORD

1 stop22h 25mTurkish Airlines

Sun 18/519:50ORD - LGW

1 stop20h 35mTurkish Airlines

Deal found 30/4£758

One-way flights from Gatwick to Illinois
Search for one-way flight options from Gatwick to Illinois. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Thu 29/514:00LGW - STL

1 stop15h 52mMultiple Airlines

Deal found 29/4£260

Mon 23/611:35LGW - MDW

2 stops27h 10mMultiple Airlines

Deal found 30/4£390

Fri 10/1018:25LGW - ORD

3 stops34h 45mMultiple Airlines

Deal found 30/4£390

Tue 6/516:25LGW - ORD

1 stop29h 45mTAP AIR PORTUGAL

Deal found 29/4£421

Wed 24/915:40LGW - ORD

1 stop11h 35mIcelandair

Deal found 29/4£439

Tue 30/910:45LGW - ORD

2 stops35h 58mWestJet

Deal found 28/4£471

Sun 29/610:40LGW - ORD

1 stop15h 02mIberia

Deal found 29/4£480

Thu 15/510:55LGW - ORD

1 stop28h 45mTurkish Airlines

Deal found 29/4£652

Sat 5/705:30LGW - STL

2 stops23h 15mTurkish Airlines

Deal found 29/4£845

Mon 2/612:40LGW - MDW

1 stop26h 05mAir Transat

Deal found 30/4£2,128

Cheapflights Fare Finder

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

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 15/5

10:40-21:22

1 stop16h 42m

Chicago O'Hare Intl

Mon 19/5

05:00-08:35

2 stops21h 35m

£414

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 25/9

15:40-18:15

1 stop32h 35m

Chicago O'Hare Intl

Mon 29/9

19:25-14:35

1 stop13h 10m

£416

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 20/5

13:40-07:27

2 stops23h 47m

Chicago O'Hare Intl

Fri 11/7

13:03-10:00

1 stop14h 57m

£438

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 10/8

14:45-06:16

2 stops21h 31m

Chicago O'Hare Intl

Tue 9/9

12:49-08:10

1 stop13h 21m

£438

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Fri 30/5

12:40-08:45

1 stop26h 05m

Chicago Midway

Mon 2/6

09:40-09:50

2 stops18h 10m

£461

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sun 10/8

14:45-19:02

1 stop34h 17m

Chicago O'Hare Intl

Tue 9/9

20:25-08:10

1 stop29h 45m

£464

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 17/6

12:00-21:43

1 stop15h 43m

Chicago O'Hare Intl

Tue 24/6

11:20-10:00

2 stops16h 40m

£488

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 10/6

11:35-18:50

1 stop13h 15m

Chicago O'Hare Intl

Wed 25/6

16:30-20:00

1 stop21h 30m

£494

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 13/5

18:35-12:45

1 stop24h 10m

Chicago O'Hare Intl

Sun 18/5

19:05-17:50

1 stop16h 45m

£510

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 18/6

14:00-23:53

1 stop15h 53m

Lambert-St Louis

Sat 21/6

17:47-10:10

1 stop34h 23m

£597

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 27 results

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, January is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of £595). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £843). 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.

What is the cheapest time of day to fly from LGW to IL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Gatwick Airport to Illinois as you normally would.

Rainfall in Illinois by month

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Peruse reviews from past customers who have flown with Delta, Air Transat and Finnair from London to Illinois to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat

7.8

Good

385 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from London Gatwick Airport to Illinois one-way?
One-way options have recently been found by users for as low as £421 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Icelandair from £439 and WestJet from £471 one-way.
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, January is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of £595). Flying from London Gatwick Airport to Illinois in July is currently the most expensive (average of £843). 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

Alternative routes for Gatwick to Illinois

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

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Heathrow to George Bush Intcntl flights

London City to Los Angeles flights

Heathrow to Atlanta flights

Heathrow to Baltimore flights

London City to Orlando flights

Heathrow to Denver flights

London City to Miami flights

Heathrow to Nashville flights

Heathrow to Detroit flights

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Gatwick to Los Angeles flights

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London City to O'Hare Intl flights

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Heathrow to Austin flights

Luton to Newark flights

Luton to Los Angeles flights

Gatwick to Miami flights

Gatwick to Hobby flights

Stansted to Newark flights

London City to LaGuardia flights

Heathrow to Midway flights

Gatwick to Seattle flights

Complete your trip

Illinois car hire

Chicago O'Hare Intl Airport car hire

Chicago Midway Airport car hire

Moline Quad-City Airport car hire

Greater Peoria Airport car hire

Bloomington-Normal Airport car hire

Springfield Capital Airport car hire

Champaign University-Willard Airport car hire

Chicago Greater Rockford Airport car hire

Belleville Airport car hire

Marion Williamson County Airport car hire

Quincy Regional Airport car hire

Direct flights to United States

Top 2 airlines flying from Gatwick to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£313	Average£472	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£413	Average£561	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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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.

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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Cheap flights from London Gatwick Airport to Illinois from £260

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.

Cheap 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 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Gatwick to Illinois

Cheapest flights from Gatwick to IllinoisExplore 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 2025.

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 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Illinois that are best for you.

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.

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?

What is the cheapest time of day to fly from LGW to IL?

Find hourly flight availability from Gatwick to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

Reviews of airlines servicing Illinois

Peruse reviews from past customers who have flown with Delta, Air Transat and Finnair from London to Illinois to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines to fly from London Gatwick Airport to Illinois one-way?

What are the most popular routes from London Gatwick Airport to Illinois?

Can I find deals for flights from Gatwick to Illinois that include hotel bookings?

How can I find direct flights from Gatwick to Illinois?

Can I find deals for business class flights from Gatwick to Illinois?

What is the cheapest month to book a flight from London Gatwick Airport to Illinois?

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.

Top 2 airlines flying from Gatwick to Illinois

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?

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Illinois?

Can Cheapflights find flights from Gatwick to Illinois with no change fees?

Can Cheapflights notify me if prices for flights from Gatwick to Illinois become cheaper?

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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 2025.