Cheap flights from London to Illinois

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How to find the cheapest flight from
London (LON) to Illinois

All the information you need to plan the best LON to ORD flight in 2021: compare London to Illinois flight prices with the expected peak season, weather and rainfall in Illinois.
How far in advance should I book a flight from London to Illinois?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 32% on flights from London to Illinois compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £386. For sooner than that we have options available in the next 3 days from £466.

What is the cheapest month to fly from London to Illinois?

The best pricing can be found in the month of October. Prices to Illinois from London average £361. You can even find prices in October for less than £361, as users have found deals to Illinois from as low as £253. The month of July appears to be one of the more expensive times to travel to Illinois from London. Flying in the targeted month can save you up to 33%.

When is the cheapest time to fly from London to Illinois (LON - USIL)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Illinois as you normally would.

Cheap flights from London to Illinois in September, October 2021

The best prices found for LON to Illinois flights in September, October
20 Oct - 3 Nov
£190pp
LTN
London Luton
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
4 Oct - 25 Oct
£249pp
STN
London Stansted
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
4 Oct - 11 Oct
£255pp
STN
London Stansted
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted

London to Illinois 2021 flight deals

Cheap flights to Illinois from London found for this year
20 Oct - 3 Nov
£190pp
LTN
London Luton
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
7 Nov - 14 Nov
£247pp
LTN
London Luton
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
4 Oct - 25 Oct
£249pp
STN
London Stansted
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted

Direct flights to Illinois from London

Save time with London to Illinois direct flight deals
8 Nov - 16 Nov
£325pp
LHR
London Heathrow
Brussels Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Brussels Airlines
Direct
LHR
London Heathrow
22 Feb - 3 Mar
£327pp
LHR
London Heathrow
Brussels Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Brussels Airlines
Direct
LHR
London Heathrow
16 Nov - 7 Dec
£336pp
LHR
London Heathrow
Brussels Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Brussels Airlines
Direct
LHR
London Heathrow

Last-minute flights from London to Illinois

Late deals on return flights to Illinois from London, departing today and this week
22 Sep - 23 Mar
£302pp
LTN
London Luton
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
24 Sep - 1 Oct
£306pp
STN
London Stansted
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
25 Sep - 4 Oct
£331pp
LGW
London Gatwick
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
     
3 STOPS
LGW
London Gatwick

One-way flights to Illinois from London

The cheapest one-way flights from London to Illinois
14:15 - 10:20
Multiple Airlines
1 stop
26h 05m
STN - ORD
Multiple Airlines
£178
Kiwi.com
14:15 - 10:20
Multiple Airlines
1 stop
26h 05m
STN - ORD
Multiple Airlines
£180
Combigo
14:35 - 10:15
Multiple Airlines
2 stops
25h 40m
LHR - ORD
Multiple Airlines
£145
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">Illinois</span> flights.

Flight FAQs

From London to Illinois

Which airlines flying from London to Illinois have flexible cancellations due to COVID-19?

Some of our airline partners flying from London to Illinois have new flexible policies in place due to COVID-19. British Airways, United Airlines, and Finnair are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

Are flight prices decreasing from London to Illinois due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and Illinois for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from London to Illinois for under £300 on Cheapflights?

Yes, there are multiple flights from London to Illinois for under £300. The cheapest flight booked recently is on Multiple Airlines for just £244, but on average you can expect to pay £270.

Are there direct flights from London to Illinois for under £400 on Cheapflights?

Cheapflights has 20 direct flights from London to Illinois under £400. A good price for a direct flight from London to Illinois is less than £364.

Are there last-minute flights available from London to Illinois for under £400?

There are currently 20+ open flights from London to Illinois within the next 7 days for less than £400.

What days are direct flights available from London to Illinois?

You can find direct flights on the following days: Monday.

How many flights depart from London to Illinois on average per day?

Per day, 2 flights depart from London to Illinois on average.
Morning (6am - Midday) - 100% of flight departures

How long is the flight from London to Illinois?

There are many flights that can get you from London to Illinois in 26h 05m. Fly via Brussels Airlines to get the fastest option. There are 3964 mi between London and Illinois.

COVID Restrictions

View COVID Travel Restrictions for Illinois (IL)

Do I need a COVID test to fly to Illinois from London?

Information is based on travel restrictions from London to Illinois

Most visitors from London will not be allowed to enter Illinois.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Illinois.

Quarantine requirements
Visitors from London are not required to quarantine after entering Illinois.

Do I need a test to fly back to London from Illinois?

Returning to London from Illinois

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering London.

Hide COVID Travel Restrictions for Illinois (IL)

Destination points for flights from London to Illinois

Select to see more specific information for flights from London to all places in Illinois.

Destination information for Illinois

Things to know before you go - useful duration and weather info for your trip from London to Illinois.
Today's exchange rate
£1 = $1.39

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur Arpt (DEC)
Moline (MLI)
Marion (MWA)

Top 10 airlines flying from London to Illinois

The chart below displays the airlines Cheapflights users travelling from London to Illinois choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Air Canada
£352 £496 No cancel fee 67%
Search Air Canada flights
SWISS
£353 £513 No cancel fee 79%
Search SWISS flights
Norwegian
£344 £520 No cancel fee 74%
Search Norwegian flights
Brussels Airlines
£352 £521 No cancel fee N/A
Search Brussels Airlines flights
Virgin Atlantic
£345 £528 No cancel fee 72%
Search Virgin Atlantic flights
TAP AIR PORTUGAL
£412 £584 No cancel fee N/A
Search TAP AIR PORTUGAL flights
Delta
£330 £585 No cancel fee N/A
Search Delta flights
Norwegian Air UK
£302 £590 No cancel fee N/A
Search Norwegian Air UK flights
Air France
£360 £606 No cancel fee 77%
Search Air France flights
KLM
£368 £610 No cancel fee 75%
Search KLM flights
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