£190 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 15/1. 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
Chicago2 stops£404
Champaign
Champaign2 stops£911
Chicago
Chicago2 stops£404
Champaign
Champaign2 stops£911

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

Thu, 22 Jan - Sat, 24 Jan
Multiple Airlines Logo
14:00 - 09:44LGW-ORD
25h 44m2 stops
Multiple Airlines Logo
10:18 - 10:05ORD-LGW
17h 47m1 stop
£404Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
08:50 - 17:20LGW-ORD
14h 30m2 stops
Multiple Airlines Logo
18:30 - 21:00ORD-LGW
20h 30m2 stops
£405Multiple Airlines
Find Deal
Thu, 16 Apr - Fri, 1 May
TAP AIR PORTUGAL Logo
14:50 - 16:00LGW-ORD
31h 10m1 stop
TAP AIR PORTUGAL Logo
18:00 - 15:40ORD-LGW
15h 40m1 stop
£411TAP AIR PORTUGAL
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Mon, 19 Jan - Tue, 3 Feb
Icelandair Logo
11:55 - 17:20LGW-ORD
11h 25m1 stop
Icelandair Logo
18:30 - 10:55ORD-LGW
10h 25m1 stop
£414Icelandair
Find Deal
Wed, 19 Nov - Mon, 24 Nov
Icelandair Logo
11:55 - 17:20LGW-ORD
11h 25m1 stop
Icelandair Logo
18:30 - 10:55ORD-LGW
10h 25m1 stop
£422Icelandair
Find Deal
Sat, 22 Nov - Sun, 30 Nov
TAP AIR PORTUGAL Logo
16:35 - 14:45LGW-ORD
28h 10m1 stop
TAP AIR PORTUGAL Logo
20:25 - 15:45ORD-LGW
13h 20m1 stop
£436TAP AIR PORTUGAL
Find Deal
Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
11:20 - 18:08LGW-STL
36h 48m2 stops
American Airlines Logo
09:39 - 09:00STL-LGW
18h 21m2 stops
£549American Airlines
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Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
12:30 - 18:08LGW-STL
35h 38m2 stops
American Airlines Logo
05:30 - 09:00STL-LGW
22h 30m2 stops
£552American Airlines
Find Deal
Tue, 21 Apr - Thu, 21 May
British Airways Logo
20:40 - 21:29LGW-CMI
30h 49m2 stops
British Airways Logo
15:02 - 20:00CMI-LGW
22h 58m2 stops
£911British Airways
Find Deal
Fri, 27 Mar - Tue, 31 Mar
British Airways Logo
11:45 - 21:27LGW-CMI
38h 42m2 stops
British Airways Logo
13:16 - 20:00CMI-LGW
24h 44m2 stops
£3,389British Airways
Find Deal
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 January, when tickets cost £401 (return) on average. On the other hand, the most expensive months are March and August, when the average cost of return tickets is £999 and £793 respectively.

What’s the cheapest day of the week to fly from London Gatwick Airport to Illinois?

The average price of all round-trip flights from London Gatwick Airport to Illinois clicked on KAYAK for each day over the last 12 months.

For London Gatwick Airport to Illinois, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from Illinois back to London Gatwick Airport, the best deals are generally found on Thursday, with Sunday being the most expensive.

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

Low seasonJanuary
Cheapest flight£190
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly (37% more expensive 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.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when retur flights cost £511 on average. Morning departures are around 9% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is £626.

Reviews of the top airlines 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.
7.1
IcelandairOverall score based on 562 reviews
6.9Comfort
7.0Entertainment
6.2Food
8.1Crew
7.2Boarding
Airline reviews

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

8.0 ExcellentAnonymous, Oct 2025KEF - SEA
Read more Icelandair reviews

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

There was no lounge at Boston for us to use. Typically flying first class overseas comes with lounge privileges. The seats did not recline even a little. My headset only worked on one side. I felt like I was flying on Ryan Air, not Icelandic Air.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Flight was 3h50 and was only provided with a packet of oat cookies and offered a cold drink. Thankfully i'd had breakfast but for a morning flight of that length some sort of breakfast should be included. There were 2 toilets for economy but due to turbulence we couldn't use them until the last 1hr which meant the queue was then huge. Would've been nice to open up the business one for those closest to the front to use.

The seat pads are past there sell by date now and are uncomfotable. Also, with screens in the back of the seat, the seats shouldnt be able to recline as this puts rhe screen in your face.

It was perfect. The service was exceptional. I would never want to cross the Atlantic in anyone else's sardine tins.

As I have said it sucked, the ticket counter to have to find and pay for another airline to get home. Now I understand this happened over the weekend but they should have someone there to talk to us instead of throwing the regular crew under the bus.

Checking in prior on line and wait time at Gatwick was terrible. I would rate a big fat ZERO.

It was ok. Our flight was delayed 2 hours, and then again on arrival. The explanation given felt feeble.

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

The food was very good and it came multiple times

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

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