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

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

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 51 days in advance, which can save you up to 38% on flights from Illinois to London compared to booking the week you need them. Waiting 51 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 $813. For sooner than that we have options available in the next 3 days from $886.

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

Flights from Illinois to London lean towards being more expensive in June. Prices are generally better when you fly from Illinois to London in February, with the cheapest ticket starting at $394.

Cheap flights from Illinois to London in October, November 2020

The best prices found for Illinois to LON flights for October, November
8 Nov - 20 Nov
$370pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
8 Nov - 20 Nov
$371pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
1 Nov - 20 Nov
$379pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl

Illinois to London 2020 flight deals

Cheap flights to London from Illinois found for this year
8 Nov - 20 Nov
$370pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
8 Nov - 20 Nov
$371pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
1 Nov - 20 Nov
$379pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
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
26 Dec - 16 Jan
$601pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl
7 Dec - 14 Dec
$607pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl
11 Jan - 26 Apr
$609pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
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
25 Oct - 4 Dec
$395pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
25 Oct - 9 Nov
$404pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
ORD
Chicago O'Hare Intl
25 Oct - 9 Nov
$405pp
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
1:20 pm - 7:40 am
TAP AIR PORTUGAL
1 Stop
12h 20m
ORD - LHR
TAP AIR PORTUGAL
$118
Gotogate
3:20 pm - 1:30 pm
TAP AIR PORTUGAL
1 Stop
17h 10m
ORD - LHR
TAP AIR PORTUGAL
$126
mytrip.com
1:20 pm - 12:30 pm
TAP AIR PORTUGAL
1 Stop
17h 10m
ORD - LHR
TAP AIR PORTUGAL
$133
mytrip.com

Related info for your journey

Useful info, stats and facts about Illinois to London flights.

Flight FAQs

From Illinois to London

Are flight prices decreasing from Illinois to London 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 Illinois and London 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.

What safety measures are being taken by airlines flying from Illinois to London to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Illinois to London. Policies will vary by airline.

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 $370, but on average you can expect to pay $390.

Are there nonstop flights from Illinois to London for under $700 on Cheapflights?

Cheapflights has at least 20 direct flights from Illinois to London under $700. A good price for a nonstop flight from Illinois to London is less than $622.

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

The most popular airlines flying from Illinois to London are American Airlines, Finnair and British Airways. Something to consider prior to booking your flight.

What are the most popular routes from Illinois to London?

When deciding which route to take from Illinois to London consider Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City as they are the most popular.

What are the cheapest Flights from Illinois to London?

While on average a flight from Illinois to London is generally $468, our data shows the cheapest flight currently is $219. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $423 for that flight.

How long is the flight from Illinois to London?

There are many flights that can get you from Illinois to London in 9h 40m. Fly via Delta, KLM, or Virgin Atlantic to get the fastest option. Both multi-stop and nonstop flights can be found to your destination and back.

What is the cheapest airline to fly from Illinois to London round-trip?

According to our current data, TAP AIR PORTUGAL ($386), offers the cheapest pricing from Illinois to London.

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

To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $118.

Destination information for London

Things to know before you go. Useful info for your trip from Illinois to London
Today's exchange rate
$1 = £0.78
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

Heathrow (LHR)
Luton (LTN)
Stansted (STN)
City (LCY)
Southend (SEN)
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