£346 Find Cheap Flights from London Gatwick Airport to Illinois – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Gatwick to Illinois

Cheapest return flight prices found by our users on KAYAK in the last 5 days
Chicago
Chicago1 stop£528
Peoria
Peoria2 stops£840
Champaign
Champaign2 stops£1,134
Chicago
Chicago1 stop£528
Peoria
Peoria2 stops£840
Champaign
Champaign2 stops£1,134
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?

The cheapest month for flights from London Gatwick Airport to Illinois is May, when tickets cost £471 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of return tickets is £1,690 and £868 respectively.

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

Low season

October

Cheapest flight

£346
Best time to beat the crowds (40% less expensive on average)
Most popular time to fly and prices are also 23% lower on average.
Flight from London Gatwick Airport to Chicago Midway Airport

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

 
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.
6.9
IcelandairOverall score based on 743 reviews
6.1Food
7.2Boarding
6.9Comfort
8.0Crew
6.9Entertainment
Airline reviews

Let's just say I won't do it again.

6.0 GoodLolu, Aug 2026
Read more Icelandair reviews

Let's just say I won't do it again.

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.

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.

More options for your flight from Gatwick to Illinois

Complete your trip to Illinois with a hotel stay or car hire