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 61 days in advance, which can save you up to 44% on flights from Illinois to London 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 $910. For sooner than that we have options available in the next 3 days from $1,146.

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

Flights from Illinois to London lean towards being more expensive in July. Prices are generally better when you fly from Illinois to London in October, with the cheapest ticket starting at $445.

Cheap flights from Illinois to London in March, April 2021

19 Apr - 28 Apr
$502pp
ORD
Chicago O'Hare Intl
Icelandair
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
Icelandair
 
1 STOP
ORD
Chicago O'Hare Intl
28 Mar - 4 Apr
$508pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
30 Apr - 10 May
$511pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl

Illinois to London 2021 flight deals

5 Sep - 16 Sep
$325pp
ORD
Chicago O'Hare Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
ORD
Chicago O'Hare Intl
25 Nov - 2 Dec
$333pp
ORD
Chicago O'Hare Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
ORD
Chicago O'Hare Intl
1 Oct - 4 Nov
$339pp
ORD
Chicago O'Hare Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
ORD
Chicago O'Hare Intl

Non-stop flights to London from Illinois

18 Apr - 30 Apr
$535pp
ORD
Chicago O'Hare Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
ORD
Chicago O'Hare Intl
5 May - 12 May
$549pp
ORD
Chicago O'Hare Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
ORD
Chicago O'Hare Intl
1 May - 13 May
$585pp
ORD
Chicago O'Hare Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Illinois to London

16 Mar - 19 Mar
$626pp
ORD
Chicago O'Hare Intl
Multiple Airlines
     
3 STOPS
LGW
London Gatwick
LGW
London Gatwick
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
12 Mar - 19 Mar
$629pp
ORD
Chicago O'Hare Intl
Turkish Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Turkish Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
12 Mar - 19 Mar
$634pp
ORD
Chicago O'Hare Intl
Turkish Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Turkish Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to London from Illinois

2:25 am - 7:35 pm
Multiple Airlines
2 Stops
35h 10m
ORD - STN
Multiple Airlines
$197
FlyFar
2:20 pm - 7:35 pm
Multiple Airlines
2 Stops
23h 15m
ORD - STN
Multiple Airlines
$199
FlyFar
6:15 am - 7:35 pm
Multiple Airlines
2 Stops
31h 20m
ORD - STN
Multiple Airlines
$203
FlyFar

Related info for your journey

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 TAP AIR PORTUGAL for just $366, but on average you can expect to pay $419.

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 $651.

Are there last-minute flights available from Illinois to London for under $700?

There are currently 20+ open flights from Illinois to London within the next 7 days for less than $700.

What days are nonstop flights available from Illinois to London?

Nonstop flights can be found on the following days: Tuesday.

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

The most popular airlines flying from Illinois to London are Major Airline, American Airlines and Air Canada. 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 Midway - London Heathrow 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 $1,772, our data shows the cheapest flight currently is $226. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $380 for that flight.

What are the most reliable airlines from Illinois to London?

The top 3 most reliable airlines when flying from Illinois to London are United Airlines (90%), Qatar Airways (84%) and EL AL (84%).

How long is the flight from Illinois to London?

There are many flights that can get you from Illinois to London in 7h 55m. Fly via Finnair, British Airways, or United Airlines 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 ($366), offers the cheapest pricing from Illinois to London.

Destination information for London

Today's exchange rate
$1 = £0.73
Flight duration
8h 17m
Average temperature for March in London
53.6 °F
Avg rainfall for March in London
1.4 ″

Airports servicing

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

Airports servicing London

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

Top 10 airlines flying from Illinois to London

Airline Cheapest Average Flexibility On-time COVID-19 safety
Norwegian
$334 $477 No cancel fee 74%
Norwegian Air UK
$330 $566 No cancel fee N/A
Air France
$409 $576 No cancel fee 77%
Delta
$395 $599 No cancel fee N/A
Brussels Airlines
$371 $600 No cancel fee N/A
SAS
$288 $632 No cancel fee 77%
KLM
$386 $632 No cancel fee 75%
TAP AIR PORTUGAL
$452 $641 No cancel fee N/A
Austrian Airlines
$399 $699 No cancel fee 78%
Air Canada
$362 $730 No cancel fee 67%
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