How long is the flight from London Gatwick Airport to Illinois?

Airlines like British Airways and Icelandair fly from London Gatwick Airport to Illinois in about 15h 01m. The time it takes to get you to your destination can typically vary by up to 17h 34m. London Gatwick Airport and Illinois are separated by a distance of 3960 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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

The most popular flight routes from London Gatwick Airport to Illinois are London Gatwick - Chicago O'Hare Intl, London Gatwick - Chicago Midway and London Gatwick - Lambert-St Louis.

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

To save on the cost of your flight from London Gatwick Airport to Illinois, book at least 56 days before your planned departure. Booking around this time can save you about 35% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $674 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $901.

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Illinois. Flights to Illinois from London Gatwick Airport in February are about $696 on average during February, but can be found for as low as $429.

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.

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 vacation 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.

$382+ Flights from London Gatwick Airport to Illinois

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Cheap flight deals from Gatwick to Illinois

Round-trip from	$567 (Booking.com)
One-way from	$382 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$840

From London Gatwick to Illinois

Search Deals

One-way flight from London Gatwick to Illinois

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($113 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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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 August 28, 2025.

Sat 9/62:00 pmLGW - MDW

1 stop25h 18mMultiple Airlines

Sun 10/510:13 amMDW - LGW

1 stop17h 57mMultiple Airlines

Deal found 8/26

$567

Wed 9/172:00 pmLGW - ORD

1 stop32h 12mMultiple Airlines

Wed 10/17:20 amORD - LGW

2 stops20h 40mMultiple Airlines

Deal found 8/28

$568

Sun 9/142:00 pmLGW - MDW

2 stops23h 11mMultiple Airlines

Mon 10/68:15 amMDW - LGW

2 stops19h 45mMultiple Airlines

Deal found 8/27

$569

Sat 8/3010:00 amLGW - ORD

2 stops19h 33mMultiple Airlines

Sun 10/58:49 pmORD - LGW

1 stop31h 11mMultiple Airlines

Deal found 8/26

$569

Sat 9/68:50 amLGW - ORD

1 stop16h 10mMultiple Airlines

Mon 9/159:15 pmORD - LGW

1 stop15h 20mMultiple Airlines

Deal found 8/28

$570

Fri 9/510:00 amLGW - MDW

2 stops19h 20mMultiple Airlines

Mon 9/298:19 amMDW - LGW

1 stop19h 41mMultiple Airlines

Deal found 8/27

$571

Wed 9/175:25 pmLGW - ORD

2 stops23h 30mMultiple Airlines

Thu 9/2511:13 amORD - LGW

1 stop13h 07mMultiple Airlines

Deal found 8/28

$571

Mon 9/88:10 pmLGW - ORD

3 stops43h 41mMultiple Airlines

Mon 9/226:44 pmORD - LGW

2 stops29h 36mMultiple Airlines

Deal found 8/28

$572

Fri 10/33:40 pmLGW - ORD

1 stop11h 35mIcelandair

Fri 10/107:25 pmORD - LGW

1 stop13h 15mIcelandair

Deal found 8/27

$573

Sun 9/142:00 pmLGW - MDW

1 stop23h 23mMultiple Airlines

Wed 10/158:05 amMDW - LGW

2 stops19h 55mMultiple Airlines

Deal found 8/26

$574

Tue 9/233:40 pmLGW - ORD

1 stop32h 35mIcelandair

Thu 10/27:25 pmORD - LGW

1 stop13h 15mIcelandair

Deal found 8/28

$574

Thu 9/42:00 pmLGW - ORD

1 stop32h 12mMultiple Airlines

Mon 9/228:49 pmORD - LGW

2 stops27h 31mMultiple Airlines

Deal found 8/28

$575

Best flights from Gatwick to Illinois
Discover carefully curated flight deals from Gatwick to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 28, 2025.

Wed 9/172:00 pmLGW - ORD

1 stop32h 12mMultiple Airlines

Wed 10/17:20 amORD - LGW

2 stops20h 40mMultiple Airlines

Deal found 8/28

$568

Sat 9/1310:40 amLGW - ORD

1 stop15h 01mBritish Airways

Fri 10/171:43 pmORD - LGW

1 stop12h 27mBritish Airways

Deal found 8/26

$569

Fri 10/243:40 pmLGW - ORD

1 stop32h 35mIcelandair

Thu 11/66:30 pmORD - LGW

1 stop10h 25mIcelandair

Deal found 8/26

$569

Mon 9/810:00 amLGW - ORD

2 stops19h 20mMultiple Airlines

Thu 9/2510:27 amORD - LGW

1 stop14h 33mMultiple Airlines

Deal found 8/27

$568

Tue 9/1610:40 amLGW - ORD

1 stop15h 01mBritish Airways

Wed 10/151:43 pmORD - LGW

1 stop12h 27mBritish Airways

Deal found 8/26

$569

Tue 10/213:40 pmLGW - ORD

1 stop32h 35mIcelandair

Tue 10/287:30 pmORD - LGW

1 stop10h 25mIcelandair

Deal found 8/27

$569

Sun 9/142:00 pmLGW - MDW

2 stops23h 11mMultiple Airlines

Mon 10/68:15 amMDW - LGW

2 stops19h 45mMultiple Airlines

Deal found 8/27

$569

Tue 9/1610:40 amLGW - ORD

1 stop15h 01mBritish Airways

Fri 10/171:43 pmORD - LGW

1 stop12h 27mBritish Airways

Deal found 8/26

$569

Sat 9/1310:40 amLGW - ORD

1 stop15h 01mBritish Airways

Sat 10/181:40 pmORD - LGW

1 stop12h 30mBritish Airways

Deal found 8/26

$569

Thu 9/189:05 pmLGW - ORD

2 stops25h 25mMultiple Airlines

Sat 9/276:44 pmORD - LGW

2 stops29h 36mMultiple Airlines

Deal found 8/27

$570

Sat 9/1310:40 amLGW - ORD

1 stop15h 01mBritish Airways

Wed 10/151:43 pmORD - LGW

1 stop12h 27mBritish Airways

Deal found 8/26

$569

Thu 9/112:00 pmLGW - MDW

2 stops23h 11mMultiple Airlines

Thu 10/1611:49 amMDW - LGW

1 stop16h 11mMultiple Airlines

Deal found 8/26

$571

Last-minute flights from Gatwick to Illinois
Discover last-minute flight deals from Gatwick to Illinois. Data last updated August 28, 2025 and is based on user searches.

Sat 8/3010:00 amLGW - ORD

2 stops19h 33mMultiple Airlines

Sun 10/58:49 pmORD - LGW

1 stop31h 11mMultiple Airlines

Deal found 8/26

$569

Thu 9/42:00 pmLGW - ORD

1 stop32h 12mMultiple Airlines

Mon 9/228:49 pmORD - LGW

2 stops27h 31mMultiple Airlines

Deal found 8/28

$575

Fri 9/510:00 amLGW - MDW

2 stops19h 20mMultiple Airlines

Mon 9/298:19 amMDW - LGW

1 stop19h 41mMultiple Airlines

Deal found 8/27

$571

Sat 9/62:00 pmLGW - MDW

1 stop25h 18mMultiple Airlines

Sun 10/510:13 amMDW - LGW

1 stop17h 57mMultiple Airlines

Deal found 8/26

$567

Sat 9/68:50 amLGW - ORD

1 stop16h 10mMultiple Airlines

Mon 9/159:15 pmORD - LGW

1 stop15h 20mMultiple Airlines

Deal found 8/28

$570

Mon 9/88:10 pmLGW - ORD

3 stops43h 41mMultiple Airlines

Mon 9/226:44 pmORD - LGW

2 stops29h 36mMultiple Airlines

Deal found 8/28

$572

Thu 9/112:00 pmLGW - MDW

2 stops23h 11mMultiple Airlines

Sun 10/1912:09 pmMDW - LGW

1 stop16h 01mMultiple Airlines

Deal found 8/26

$577

Sun 9/142:00 pmLGW - MDW

2 stops23h 11mMultiple Airlines

Mon 10/68:15 amMDW - LGW

2 stops19h 45mMultiple Airlines

Deal found 8/27

$569

Sun 9/142:00 pmLGW - MDW

1 stop23h 23mMultiple Airlines

Wed 10/158:05 amMDW - LGW

2 stops19h 55mMultiple Airlines

Deal found 8/26

$574

Wed 9/172:00 pmLGW - ORD

1 stop32h 12mMultiple Airlines

Wed 10/17:20 amORD - LGW

2 stops20h 40mMultiple Airlines

Deal found 8/28

$568

Wed 9/175:25 pmLGW - ORD

2 stops23h 30mMultiple Airlines

Thu 9/2511:13 amORD - LGW

1 stop13h 07mMultiple Airlines

Deal found 8/28

$571

Tue 9/233:40 pmLGW - ORD

1 stop32h 35mIcelandair

Thu 10/27:25 pmORD - LGW

1 stop13h 15mIcelandair

Deal found 8/28

$574

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 August 28, 2025.

Wed 9/172:00 pmLGW - STL

2 stops25h 54mMultiple Airlines

Deal found 8/27

$382

Thu 10/302:00 pmLGW - STL

1 stop28h 17mMultiple Airlines

Deal found 8/28

$400

Wed 9/241:05 pmLGW - STL

1 stop16h 39mMultiple Airlines

Deal found 8/28

$496

Thu 10/161:05 pmLGW - STL

3 stops39h 09mMultiple Airlines

Deal found 8/26

$519

Thu 10/3010:10 pmLGW - ORD

3 stops41h 03mMultiple Airlines

Deal found 8/28

$549

Sun 9/142:00 pmLGW - MDW

2 stops31h 53mMultiple Airlines

Deal found 8/26

$550

Mon 9/152:00 pmLGW - MDW

2 stops55h 58mMultiple Airlines

Deal found 8/26

$551

Tue 12/1611:55 amLGW - ORD

1 stop11h 25mIcelandair

Deal found 8/25

$551

Fri 10/102:00 pmLGW - MDW

1 stop31h 11mMultiple Airlines

Deal found 8/26

$552

Fri 10/102:00 pmLGW - ORD

1 stop33h 27mMultiple Airlines

Deal found 8/27

$552

Mon 9/2910:00 amLGW - MDW

2 stops19h 20mMultiple Airlines

Deal found 8/27

$553

Wed 9/172:00 pmLGW - ORD

1 stop35h 44mMultiple Airlines

Deal found 8/28

$553

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

Wed 9/17

2:00 pm-4:12 pm

1 stop32h 12m

Chicago O'Hare Intl

Wed 10/1

7:20 am-10:00 am

2 stops20h 40m

$568

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 9/8

10:00 am-11:20 pm

2 stops19h 20m

Chicago O'Hare Intl

Thu 9/25

10:27 am-7:00 am

1 stop14h 33m

$568

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 9/13

10:40 am-7:41 pm

1 stop15h 01m

Chicago O'Hare Intl

Fri 10/17

1:43 pm-8:10 am

1 stop12h 27m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 10/24

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

Thu 11/6

6:30 pm-10:55 am

1 stop10h 25m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 9/16

10:40 am-7:41 pm

1 stop15h 01m

Chicago O'Hare Intl

Wed 10/15

1:43 pm-8:10 am

1 stop12h 27m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 10/21

3:40 pm-6:15 pm

1 stop32h 35m

Chicago O'Hare Intl

Tue 10/28

7:30 pm-10:55 am

1 stop10h 25m

$569

LondonChicago

LGW - MDW

LGWMDW

London Gatwick

Sun 9/14

2:00 pm-7:11 am

2 stops23h 11m

Chicago Midway

Mon 10/6

8:15 am-10:00 am

2 stops19h 45m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 9/16

10:40 am-7:41 pm

1 stop15h 01m

Chicago O'Hare Intl

Fri 10/17

1:43 pm-8:10 am

1 stop12h 27m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 9/13

10:40 am-7:41 pm

1 stop15h 01m

Chicago O'Hare Intl

Sat 10/18

1:40 pm-8:10 am

1 stop12h 30m

$569

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Sat 9/13

10:40 am-7:41 pm

1 stop15h 01m

Chicago O'Hare Intl

Wed 10/15

1:43 pm-8:10 am

1 stop12h 27m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/27

Showing 1-10 of 50 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 round-trip 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, August is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of $245). Flying from London Gatwick Airport to Illinois in March is currently the most expensive (average of $321). 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 a feel of what it's like to fly with Icelandair from London Gatwick Airport to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Icelandair

7.0

Good

537 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

Icelandair

7.0

Good

537 reviews

Icelandair

7.0

Good

537 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

Related info for your journey

How long is the flight from London Gatwick Airport to Illinois?
Airlines like British Airways and Icelandair fly from London Gatwick Airport to Illinois in about 15h 01m. The time it takes to get you to your destination can typically vary by up to 17h 34m. London Gatwick Airport and Illinois are separated by a distance of 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 flight routes from London Gatwick Airport to Illinois are London Gatwick - Chicago O'Hare Intl, London Gatwick - Chicago Midway and 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 vacation 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, August is the cheapest month in which you can book a flight from London Gatwick Airport to Illinois (average of $245). Flying from London Gatwick Airport to Illinois in March is currently the most expensive (average of $321). 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

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Complete your trip

Illinois car rentals

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Quincy Regional Airport car rentals

Top airline flying from Gatwick to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$390	Average$558	FlexibilityNo cancel fee	On-time76%

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$382+ Cheap flights from Gatwick (LGW) to Illinois

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Gatwick to Illinois with Cheapflights

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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 August 28, 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 August 28, 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 August 28, 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?

Reviews of airlines servicing Illinois

Get a feel of what it's like to fly with Icelandair from London Gatwick Airport to Illinois by reading reviews from past customers. You can also see how each airline compares 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.

How long is the flight from London Gatwick Airport to Illinois?

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 airline flying from Gatwick to Illinois

100% Free

Book with Flexibility

Travel Smart

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 August 28, 2025.