Cheap flights from Illinois (IL) to London (LON)

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

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

Find a great deal and save up to 39% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to London within the next two weeks, with the cheapest ticket starting at $704.

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

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

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

Our data shows that April tends to be the cheapest month to fly to London from Illinois. Users have commonly found prices around $590 for the month, but tickets can be as low as $386. Due to multiple factors, prepare for potentially higher prices in December.

Cheap flights from Illinois to London in October, November 2021

The best prices found for Illinois to LON flights for October, November
10 Nov - 18 Nov
$363pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
14 Nov - 21 Nov
$365pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
10 Nov - 17 Nov
$368pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl

Illinois to London 2021 flight deals

Cheap flights to London from Illinois found for this year
10 Nov - 18 Nov
$363pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
14 Nov - 21 Nov
$365pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
10 Nov - 17 Nov
$368pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl

Non-stop flights to London from Illinois

Save time with Illinois to London direct flight deals
9 Dec - 13 Jan
$545pp
ORD
Chicago O'Hare Intl
Iberia
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl
1 Dec - 9 Dec
$546pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl
23 Nov - 1 Dec
$559pp
ORD
Chicago O'Hare Intl
Iberia
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Illinois to London

Late deals on round-trip flights to London from Illinois, departing today and this week
3 Nov - 7 Nov
$370pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
LTN
London Luton
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
31 Oct - 10 Nov
$394pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
31 Oct - 6 Nov
$398pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl

One-way flights to London from Illinois

The cheapest one-way flights from Illinois to London
2:30 pm - 7:50 am
SWISS
1 Stop
11h 20m
ORD - LCY
SWISS
$242
StudentUniverse
1:00 am - 6:40 pm
Multiple Airlines
3 Stops
35h 40m
ORD - STN
Multiple Airlines
$276
FlyFar
1:00 pm - 2:45 am
Finnair
Nonstop
7h 45m
ORD - LHR
Finnair
$282
StudentUniverse

Related info for your journey

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

Flight FAQs

From Illinois to London

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

Some of the carriers operating flights from Illinois to London that may be offering flexible cancellation policies are British Airways, United Airlines, and American Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Illinois to London for under $400 on Cheapflights?

Yes, there are multiple flights from Illinois to London for under $400. The cheapest flight booked recently is on Multiple Airlines for just $363, but on average you can expect to pay $386.

Are there nonstop flights from Illinois to London for under $600 on Cheapflights?

Cheapflights has at least 20 direct flights from Illinois to London under $600. A good price for a nonstop flight from Illinois to London is less than $573.

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

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

What days are nonstop flights available from Illinois to London?

Nonstop flights can be found on the following days: Wednesday, Friday, Saturday.

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

On average, you can expect to see 15 flights from Illinois to London a day.
Afternoon (Noon - 6pm) - 47% of flight departures
Evening (6pm - Midnight) - 53% of flight departures

How long is the flight from Illinois to London?

For as low as $395, SAS can have you in London from Illinois in 14h 55m. The distance between Illinois and London is about 3964 mi.

What are the cheapest airlines to fly from Illinois to London one-way?

For one-way options, check prices for SWISS. According to our data, you can fly for as low as $242. Users have also found prices from $246 and $282 on TAP AIR PORTUGAL and Finnair, respectively.

What are the most reliable airlines from Illinois to London?

No one likes to see their flight delayed. When booking a flight from Illinois to London consider choosing Malaysia Airlines (80%), Qatar Airways (74%) or EL AL (74%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Illinois to London?

When booking a flight from Illinois to London, you may want to consider flying on Major Airline, American Airlines or Air Canada as they are the most popular for this route.

What are the most popular routes from Illinois to London?

While some choose either Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City, Chicago O'Hare Intl - London Heathrow is the most popular route from Illinois to London.

What are the cheapest flights from Illinois to London?

On average you can expect to pay $1,628 for a flight from Illinois to London. The cheapest flight overall is $223 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $413.

COVID Restrictions

View COVID Travel Restrictions for London, England

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

Information is based on travel restrictions from Illinois to London

Most visitors from Illinois need to provide a negative COVID-19 test result and/or quarantine to enter London.

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.

Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.

Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.

COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.


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

Returning to Illinois from London

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.

Hide COVID Travel Restrictions for London, England

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Illinois to London.
Today's exchange rate
$1 = £0.73
Average temperature for October in London
60.8 °F
Avg rainfall for October in London
2.8 ″

Airports servicing

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

Airports servicing London

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

Top 10 airlines flying from Illinois to London

The chart below displays the airlines Cheapflights users traveling from Illinois to London 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
SAS
$288 $632 No cancel fee 77%
Norwegian Air UK
$330 $566 No cancel fee N/A
Norwegian
$334 $477 No cancel fee 74%
Finnair
$355 $555 No cancel fee 76%
Air Canada
$362 $730 No cancel fee 67%
Lufthansa
$364 $552 No cancel fee 76%
British Airways
$368 $555 No cancel fee 70%
Brussels Airlines
$371 $600 No cancel fee N/A
Iberia
$377 $497 No cancel fee 77%
American Airlines
$379 $1,044 No cancel fee 71%
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