$260 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 9/29. 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

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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Best Illinois Flight Deals from Gatwick

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
St. Louis
St. Louis1 stop$791
St. Louis
St. Louis1 stop$791

Cheap Flights from Gatwick to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Gatwick to Illinois

Wed, Nov 12 - Wed, Nov 19
Icelandair Logo
11:55 am - 5:20 pmLGW-ORD
11h 25m1 stop
Icelandair Logo
6:30 pm - 10:55 amORD-LGW
10h 25m1 stop
$426Icelandair
Find Deal
Fri, Dec 12 - Wed, Dec 17
Icelandair Logo
11:55 am - 5:20 pmLGW-ORD
11h 25m1 stop
Icelandair Logo
6:30 pm - 10:55 amORD-LGW
10h 25m1 stop
$438Icelandair
Find Deal
Thu, Oct 30 - Sun, Nov 9
TAP AIR PORTUGAL Logo
3:55 pm - 4:15 pmLGW-ORD
29h 20m1 stop
TAP AIR PORTUGAL Logo
8:20 pm - 3:45 pmORD-LGW
13h 25m1 stop
$454TAP AIR PORTUGAL
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Sun, Sep 14 - Sun, Sep 21
TAP AIR PORTUGAL Logo
10:35 am - 4:40 pmLGW-ORD
36h 05m1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 3:10 pmORD-LGW
15h 10m1 stop
$457TAP AIR PORTUGAL
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Thu, Aug 28 - Wed, Oct 1
 Logo
10:00 am - 9:22 amLGW-ORD
29h 22m1 stop
 Logo
1:03 pm - 10:00 amORD-LGW
14h 57m1 stop
Mon, Aug 25 - Fri, Sep 19
 Logo
10:00 am - 9:22 amLGW-ORD
29h 22m1 stop
 Logo
3:11 pm - 7:00 amORD-LGW
33h 49m1 stop
Sat, Aug 30 - Mon, Sep 15
SWISS Logo
6:40 pm - 12:10 pmLGW-ORD
23h 30m1 stop
SWISS Logo
3:45 pm - 5:50 pmORD-LGW
20h 05m1 stop
$516SWISS
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Thu, Oct 9 - Mon, Oct 13
British Airways Logo
2:30 pm - 7:29 pmLGW-ORD
34h 59m1 stop
British Airways Logo
6:45 pm - 1:50 pmORD-LGW
13h 05m1 stop
$540British Airways
Find Deal
Thu, Nov 13 - Sun, Nov 30
SWISS Logo
6:40 pm - 4:15 pmLGW-ORD
27h 35m1 stop
SWISS Logo
5:55 pm - 5:50 pmORD-LGW
41h 55m2 stops
$546SWISS
Find Deal
Fri, Nov 7 - Tue, Nov 11
British Airways Logo
11:00 am - 11:00 amLGW-ORD
30h 00m2 stops
British Airways Logo
4:45 pm - 10:15 amORD-LGW
11h 30m1 stop
$553British Airways
Find Deal
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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 $528 (return) on average. On the other hand, the most expensive months are March and August, when the average cost of round-trip tickets is $1,394 and $1,051 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.

Your flight ticket price will generally be cheaper if you fly to Illinois on a Sunday and more expensive on a Thursday. On your return trip to London Gatwick Airport, you should consider flying back on a Saturday, and avoid Fridays for better deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from London Gatwick Airport to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.


Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$260
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from London Gatwick Airport to Chicago

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 travelers 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 round-trip 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 round-trip flights cost $713 on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $773.

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 502 reviews
8.0Crew
7.0Entertainment
6.9Comfort
6.2Food
7.1Boarding
Airline reviews

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..

2.0 MediocreKelly, Jun 2025KEF - ORD
Read more Icelandair reviews

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..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

I had an exit row and so was Comfortable on the long flight.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

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.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

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

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