Cheap flights from Illinois to London (LON)
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.
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.
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.
Cheap flights from Illinois to London in May, June 2022
The best prices found for Illinois to LON flights for May, June
Chicago O'Hare Intl
London Heathrow
2 stops
19h 40mLondon Heathrow
Chicago O'Hare Intl
1 stop
28h 25mScandinavian Airlines
Chicago O'Hare Intl
London Heathrow
2 stops
21h 30mLondon Heathrow
Chicago O'Hare Intl
1 stop
23h 20mScandinavian Airlines
Chicago O'Hare Intl
London Heathrow
2 stops
18h 00mLondon Heathrow
Chicago O'Hare Intl
2 stops
32h 00mScandinavian Airlines
Illinois to London 2022 flight deals
Cheap flights to London from Illinois found for this year
Chicago O'Hare Intl
London Heathrow
1 stop
11h 55mLondon Heathrow
Chicago O'Hare Intl
1 stop
21h 15mScandinavian Airlines
Chicago O'Hare Intl
London Heathrow
2 stops
20h 30mLondon Heathrow
Chicago O'Hare Intl
1 stop
13h 50mScandinavian Airlines
Chicago O'Hare Intl
London Heathrow
2 stops
16h 35mLondon Heathrow
Chicago O'Hare Intl
1 stop
13h 50mScandinavian Airlines
Cheap KLM flights from Illinois to London
Chicago Midway
London Heathrow
1 stop
11h 55mLondon Heathrow
Chicago Midway
1 stop
14h 04mKLM
Chicago Midway
London Heathrow
1 stop
11h 45mLondon Heathrow
Chicago Midway
1 stop
13h 33mKLM
Chicago O'Hare Intl
London City
1 stop
10h 05mLondon City
Chicago O'Hare Intl
1 stop
10h 50mKLM
Cheap Finnair flights from Illinois to London
Lambert-St Louis
London Heathrow
1 stop
13h 02mLondon Heathrow
Lambert-St Louis
2 stops
20h 03mFinnair
Lambert-St Louis
London Heathrow
1 stop
10h 47mLondon Heathrow
Lambert-St Louis
2 stops
33h 29mFinnair
Chicago O'Hare Intl
London Heathrow
Nonstop
7h 40mLondon Heathrow
Chicago O'Hare Intl
Nonstop
8h 55mFinnair
Non-stop flights to London from Illinois
Save time with Illinois to London direct flight deals
Chicago O'Hare Intl
London Heathrow
Nonstop
7h 45mLondon Heathrow
Chicago O'Hare Intl
Nonstop
8h 45mBritish Airways
Chicago O'Hare Intl
London Heathrow
Nonstop
7h 45mLondon Heathrow
Chicago O'Hare Intl
Nonstop
8h 45mBritish Airways
Chicago O'Hare Intl
London Heathrow
Nonstop
7h 40mLondon Heathrow
Chicago O'Hare Intl
Nonstop
8h 55mBritish Airways
Last minute flights from Illinois to London
Late deals on return flights to London from Illinois, departing today and this week
Chicago O'Hare Intl
London Heathrow
3 stops
34h 50mLondon Heathrow
Chicago O'Hare Intl
3 stops
32h 55mMultiple Airlines
Chicago O'Hare Intl
London Heathrow
3 stops
30h 30mLondon Heathrow
Chicago O'Hare Intl
3 stops
32h 55mMultiple Airlines
Chicago O'Hare Intl
London Heathrow
3 stops
35h 29mLondon Heathrow
Chicago O'Hare Intl
3 stops
32h 55mMultiple Airlines
One-way flights to London All airports from Illinois
The cheapest one-way flights from Illinois to London
Chicago O'Hare Intl
London Gatwick
1 stop
10h 25mIcelandair
Chicago O'Hare Intl
London Heathrow
1 stop
10h 15mIcelandair
Chicago O'Hare Intl
London Heathrow
Nonstop
8h 15mLufthansa
Related info for your journey
Useful info, stats and facts about Illinois to London flights.
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, American Airlines, and Iberia. 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 $300 on Cheapflights?
Yes, there are multiple flights from Illinois to London for under $300. The cheapest flight booked recently is on Scandinavian Airlines for just $278, but on average you can expect to pay $357.
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 $625.
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: Wednesday, Thursday, Friday.
How many flights depart from Illinois to London on average per day?
On average, you can expect to see 6 flights from Illinois to London a day.
Afternoon (Noon - 6pm) - 100% of flight departures
How long is the flight from Illinois to London?
For as low as $278, Scandinavian Airlines can have you in London from Illinois in 11h 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 Icelandair. According to our data, you can fly for as low as $264. Users have also found prices from $266 and $275 on Lufthansa and Scandinavian Airlines, respectively.
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 most popular airlines that fly from Illinois to London?
When booking a flight from Illinois to London, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.
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 Air Canada (81%), Austrian Airlines (81%) or United Airlines (81%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Illinois to London?
On average you can expect to pay $3,400 for a flight from Illinois to London. The cheapest flight overall is $26 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $278.
Flights to London from Illinois
Can I fly to London from Illinois right now?
Most visitors from Illinois can enter London without restrictions.
COVID-19 testing requirements
Visitors from Illinois are not required to present a negative COVID-19 PCR test or antigen result upon entering London.
Quarantine requirements
Visitors from Illinois are not required to quarantine after entering London.
Can I fly back to Illinois from London?
COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Illinois.
Quarantine requirements
Visitors from London are not required to quarantine after entering Illinois.
Departure points for flights from Illinois to London
Select to see more specific information for flights to London from all departure points in Illinois
Top 5 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.
Hourly flight availability from Illinois to London
See what time of day planes typically take off from Illinois to London
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 13%of flight departures | Morning6 am to noon |
| 42%of flight departures | AfternoonNoon to 6 pm |
| 44%of flight departures | Evening6 pm to midnight |