Find flights
When to book
FAQs & Tips
Airlines
Deals

Find cheap flights from London to Illinois from $296

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Illinois departing on 5/13. 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
0 bags
Fri 5/24
Fri 5/31

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

In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

High season

March

Cheapest flight

$296
Most popular time to fly with an average 158% increase in price.
Flight from London to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from London 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 to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from London 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 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 to Illinois with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London 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 to Illinois from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 34% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top airline flying from London to Illinois

 
Need help choosing which airline to fly with from London 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.
7.4
United AirlinesOverall score based on 11255 reviews
7.7boarding
7.2comfort
6.7food
7.1entertainment
8.1crew
Airline reviews

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

2.0 MediocreMichelle, Apr 2024ELP - ORD
Read more about United Airlines reviews

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Unfortunately this is not a happy ending comment. Positive: flown United before no issue Negative: it only takes one bad experience to not plan future travel with United Cancún departure was delayed by 1h20 minutes, connection in Chicago was 1h30 minutes. Flight departure time 6:08 Miraculously 7 of us ran 4 kilometres through Chicago to arrive at 6:00 to be told very rudely by the 2 unprofessional United attendants you missed your flight and that we should of arrived early. Did I mention that reason I was flying? I received a call that my brother was dying and to get home. They provided no assistance would not answer any of our questions, ignorantly walked away. Deplorable

The seat is too hard and my back and bottom are having servers pain

Book cheap flights from London to Illinois

Recent round-trip flight deals

5/31Fri
1 stop
11h 50mYXU-ORD
6/5Wed
2 stops
20h 01mORD-YXU
$587
5/31Fri
1 stop
11h 50mYXU-ORD
6/5Wed
1 stop
4h 46mORD-YXU
$589
8/9Fri
1 stopAir Canada
6h 24mYXU-ORD
8/10Sat
1 stopAir Canada
5h 45mORD-YXU
$599
10/3Thu
1 stopUnited Airlines
4h 03mYXU-ORD
10/6Sun
2 stopsUnited Airlines
7h 47mORD-YXU
$600
5/21Tue
1 stopAir Canada
4h 54mYXU-ORD
5/28Tue
1 stopAir Canada
4h 46mORD-YXU
$601
5/16Thu
1 stopAir Canada
4h 04mYXU-ORD
5/19Sun
1 stopAir Canada
6h 21mORD-YXU
$604
10/3Thu
2 stopsUnited Airlines
9h 02mYXU-ORD
10/6Sun
2 stopsUnited Airlines
7h 47mORD-YXU
$606
9/15Sun
1 stopUnited Airlines
6h 03mYXU-ORD
9/18Wed
1 stopUnited Airlines
4h 47mORD-YXU
$609
9/15Sun
1 stopUnited Airlines
4h 08mYXU-ORD
9/18Wed
2 stopsUnited Airlines
7h 47mORD-YXU
$617
5/31Fri
1 stop
11h 50mYXU-ORD
6/5Wed
3 stops
31h 12mORD-YXU
$624

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/13Mon
2 stops
35h 00mYXU-ORD
$296
5/13Mon
1 stopAir Canada
4h 04mYXU-ORD
$321

Search by stops

Search by airline

Search by price

London - Illinois Flights

Departure:

London (YXU)Canada

Return flight deals:

Illinois - London

Cabin classes:

Browse destinations: