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?

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 June, July 2021

The best prices found for Illinois to LON flights for June, July
26 Jun - 5 Jul
$463pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
27 Jun - 5 Jul
$474pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
26 Jun - 1 Jul
$481pp
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

Cheap flights to London from Illinois found for this year
7 Oct - 10 Oct
$309pp
ORD
Chicago O'Hare Intl
SAS
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
ORD
Chicago O'Hare Intl
21 Oct - 24 Oct
$310pp
ORD
Chicago O'Hare Intl
SAS
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
ORD
Chicago O'Hare Intl
17 Sep - 19 Sep
$311pp
ORD
Chicago O'Hare Intl
SAS
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
ORD
Chicago O'Hare Intl

Non-stop flights to London from Illinois

Save time with Illinois to London direct flight deals
27 Oct - 3 Nov
$630pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
ORD
Chicago O'Hare Intl
20 Oct - 27 Oct
$632pp
ORD
Chicago O'Hare Intl
Iberia
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
ORD
Chicago O'Hare Intl
20 Oct - 27 Oct
$633pp
ORD
Chicago O'Hare Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
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
26 Jun - 5 Jul
$463pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
27 Jun - 5 Jul
$474pp
ORD
Chicago O'Hare Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
26 Jun - 1 Jul
$481pp
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
4:00 pm - 5:40 am
Iberia
Nonstop
7h 40m
ORD - LHR
Iberia
$261
SnapTravelAir
12:35 pm - 6:35 am
Iberia
1 Stop
12h 00m
ORD - LHR
Iberia
$278
SnapTravelAir
1:49 am - 7:50 pm
Multiple Airlines
2 Stops
36h 01m
ORD - STN
Multiple Airlines
$295
Kiwi.com

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

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.

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 SAS for just $310, but on average you can expect to pay $333.

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 $653.

Are there last-minute flights available from Illinois to London for under $500?

There are currently 20+ open flights from Illinois to London within the next 7 days for less than $500.

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 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 $1,628, our data shows the cheapest flight currently is $224. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $310 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 (89%) and EL AL (89%).

How long is the flight from Illinois to London?

There are many flights that can get you from Illinois to London in 9h 54m. Fly via British Airways, Delta, or Air Canada 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, SAS ($310), 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 Iberia, which is currently one of the cheapest options available, starting at $261.

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 June in London
69.8 °F
Avg rainfall for June in London
1.7 ″

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

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
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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