£278 Find Cheap Flights from London Gatwick Airport to Illinois

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

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Illinois, as well as popular online travel agencies
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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£565
Peoria
Peoria2 stops£789
Champaign
Champaign2 stops£841
Chicago
Chicago1 stop£565
Peoria
Peoria2 stops£789
Champaign
Champaign2 stops£841

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

Sun, 5 Jul - Sat, 11 Jul
Icelandair Logo
15:40 - 18:15
LGW
-
ORD
32h 35m
1 stop
Icelandair Logo
19:25 - 11:45
ORD
-
LGW
10h 20m
1 stop
£565Icelandair
Sun, 6 Sep - Thu, 17 Sep
Multiple Airlines Logo
14:00 - 23:14
LGW
-
ORD
15h 14m
1 stop
Multiple Airlines Logo
19:25 - 14:40
ORD
-
LGW
13h 15m
1 stop
£567Multiple Airlines
Wed, 2 Sep - Thu, 17 Sep
Multiple Airlines Logo
14:00 - 23:14
LGW
-
ORD
15h 14m
1 stop
Multiple Airlines Logo
19:25 - 14:40
ORD
-
LGW
13h 15m
1 stop
£568Multiple Airlines
Fri, 10 Jul - Fri, 17 Jul
JetBlue Logo
12:20 - 19:15
LGW
-
ORD
12h 55m
1 stop
JetBlue Logo
20:10 - 09:35
ORD
-
LGW
31h 25m
1 stop
£569JetBlue
Tue, 14 Jul - Tue, 21 Jul
Multiple Airlines Logo
08:50 - 19:52
LGW
-
ORD
17h 02m
2 stops
Multiple Airlines Logo
22:25 - 11:45
ORD
-
LGW
31h 20m
1 stop
£569Multiple Airlines
Fri, 10 Jul - Tue, 21 Jul
JetBlue Logo
12:20 - 19:15
LGW
-
ORD
12h 55m
1 stop
JetBlue Logo
10:56 - 09:35
ORD
-
LGW
16h 39m
1 stop
£571JetBlue
Fri, 10 Jul - Mon, 13 Jul
JetBlue Logo
12:20 - 19:15
LGW
-
ORD
12h 55m
1 stop
JetBlue Logo
20:10 - 09:35
ORD
-
LGW
31h 25m
1 stop
£572JetBlue
Sat, 27 Jun - Mon, 29 Jun
Air Transat Logo
11:35 - 14:35
LGW
-
MDW
33h 00m
2 stops
Air Transat Logo
15:20 - 07:55
MDW
-
LGW
34h 35m
2 stops
£589Air Transat
Tue, 25 Aug - Tue, 8 Sep
Iberia Logo
11:30 - 19:27
LGW
-
STL
37h 57m
2 stops
Iberia Logo
13:25 - 20:00
STL
-
LGW
24h 35m
2 stops
£751Iberia
Wed, 14 Oct - Sun, 18 Oct
Iberia Logo
20:40 - 20:08
LGW
-
STL
29h 28m
2 stops
Iberia Logo
09:47 - 10:50
STL
-
LGW
19h 03m
2 stops
£775Iberia
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.

How much is a return flight from London Gatwick Airport to Illinois?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Gatwick Airport to Illinois departing in July.

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 December, when tickets cost £173 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £689 and £531 respectively.

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

Low seasonSeptember
Cheapest flight£278
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly and prices are also 7% 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 678 reviews
6.9Comfort
6.9Entertainment
6.2Food
8.0Crew
7.2Boarding
Airline reviews

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

2.0 Mediocre3J, Jun 2026
KEF - DEN
Read more Icelandair reviews

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

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

Pleasant, attentive flight attendants, but they’ve got to upgrade their seats to be a true “business class” carrier.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

Was a bit surprised that Icelandair flies a domestically configured 757s on long-haul flights to Iceland (no lie-flat seats in business class).

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

The most uncomfortable seat i’ve ever had on a flight

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

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