£251 Find Cheap Flights from London Gatwick Airport to Illinois – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Gatwick to Illinois departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Gatwick to Illinois

Cheapest return prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop£486
Peoria
Peoria2 stops£932
Champaign
Champaign2 stops£2,900
Bloomington
Bloomington2 stops£830
Chicago
Chicago1 stop£486
Peoria
Peoria2 stops£932
Champaign
Champaign2 stops£2,900
Bloomington
Bloomington2 stops£830

Book Cheap Gatwick to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Gatwick to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Gatwick to Illinois

Mon, 11 Jan - Tue, 18 May
Icelandair Logo
11:55 - 17:20
LGW
-
ORD
11h 25m
1 stop
Icelandair Logo
19:25 - 14:40
ORD
-
LGW
13h 15m
1 stop
£486Icelandair
Wed, 9 Sep - Sat, 12 Sep
Icelandair Logo
15:40 - 21:25
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
19:25 - 11:45
ORD
-
LGW
10h 20m
1 stop
£486Icelandair
Wed, 16 Sep - Wed, 23 Sep
Multiple Airlines Logo
10:00 - 21:25
LGW
-
ORD
17h 25m
2 stops
Multiple Airlines Logo
19:25 - 16:20
ORD
-
LGW
14h 55m
2 stops
£486Multiple Airlines
Wed, 9 Sep - Sat, 12 Sep
Icelandair Logo
15:40 - 21:25
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
22:25 - 14:35
ORD
-
LGW
10h 10m
1 stop
£486Icelandair
Thu, 3 Sep - Tue, 8 Sep
Icelandair Logo
13:00 - 18:15
LGW
-
ORD
11h 15m
1 stop
Icelandair Logo
22:25 - 11:45
ORD
-
LGW
31h 20m
1 stop
£486Icelandair
Tue, 8 Sep - Tue, 24 Nov
Icelandair Logo
13:00 - 18:15
LGW
-
ORD
11h 15m
1 stop
Icelandair Logo
18:30 - 10:55
ORD
-
LGW
10h 25m
1 stop
£486Icelandair
Tue, 1 Sep - Tue, 8 Sep
Icelandair Logo
13:00 - 18:15
LGW
-
ORD
11h 15m
1 stop
Icelandair Logo
22:25 - 11:45
ORD
-
LGW
31h 20m
1 stop
£486Icelandair
Thu, 15 Oct - Mon, 19 Oct
Multiple Airlines Logo
14:00 - 23:55
LGW
-
ORD
15h 55m
1 stop
Multiple Airlines Logo
06:05 - 10:00
ORD
-
LGW
21h 55m
1 stop
£487Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Icelandair Logo
15:40 - 21:25
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
22:25 - 14:40
ORD
-
LGW
10h 15m
1 stop
£489Icelandair
Fri, 23 Oct - Sat, 31 Oct
Multiple Airlines Logo
19:55 - 16:10
LGW
-
ORD
26h 15m
2 stops
Multiple Airlines Logo
20:15 - 19:55
ORD
-
LGW
18h 40m
2 stops
£489Multiple Airlines
Booking Insights

KAYAK's insights & trends for Gatwick to Illinois flights

Get data-powered insights and trends into flights from Gatwick to Illinois to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Gatwick Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Gatwick Airport to Illinois is September, when tickets cost £374 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of return tickets is £869 and £720 respectively.

Good to know - Cheap tickets from London Gatwick Airport to Illinois

Low season

October

Cheapest flight

£251
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly and prices are also 8% lower on average.
Flight from London Gatwick Airport to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from London Gatwick Airport to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Gatwick Airport to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Gatwick Airport to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Gatwick Airport to Illinois is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Gatwick Airport to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Gatwick Airport to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Gatwick Airport to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London Gatwick Airport to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Gatwick to Illinois

 
See real verified KAYAK customer reviews for airlines flying from London to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Gatwick to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IcelandairOverall score based on 716 reviews
6.1Food
6.9Comfort
7.2Boarding
6.9Entertainment
8.0Crew
Airline reviews

1. No food on a 8 hr flight is a travesty! The fare was not that low. 2. The entertainment was pretty bad and you had to buy headphones!!! 3. Only 2 toilets for the whole Economy section!!

4.0 OkayAnonymous, Jul 2026
LGW - KEF
Read more Icelandair reviews

1. No food on a 8 hr flight is a travesty! The fare was not that low. 2. The entertainment was pretty bad and you had to buy headphones!!! 3. Only 2 toilets for the whole Economy section!!

At least one soda free, felt like I was nickeled to death.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

did internet check in but still had to get checked in at the counter and this was not the first time. Bummer!

We had to be bussed to the plane. And it was raining. Not a pleasant experience.

Paying $75 for my bag is disgusting. Got off ground late so I missed my connections. Kept us waiting for passengers in the cold. Will not use them again.

Everything you need to know for your flight from Gatwick to Illinois

Information on your arrival and departure airports