Cheap flights from Illinois to London (LON)

ORD — LON
May 30 — Jun 61

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
May 25 - May 27
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

19h 40m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

28h 25m
$286

Scandinavian Airlines

View Deal

Deal found 5/23/22

May 25 - May 27
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

21h 30m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

23h 20m
$287

Scandinavian Airlines

View Deal

Deal found 5/24/22

May 25 - May 27
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

18h 00m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

32h 00m
$290

Scandinavian Airlines

View Deal

Deal found 5/23/22

Illinois to London 2022 flight deals

Cheap flights to London from Illinois found for this year
Sep 11 - Sep 12
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

11h 55m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

21h 15m
$278

Scandinavian Airlines

View Deal

Deal found 5/24/22

May 23 - May 25
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

20h 30m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

13h 50m
$281

Scandinavian Airlines

View Deal

Deal found 5/22/22

Oct 8 - Oct 10
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

16h 35m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

13h 50m
$282

Scandinavian Airlines

View Deal

Deal found 5/24/22

Cheap KLM flights from Illinois to London

Sep 14 - Sep 19
MDW

Chicago Midway

LHR

London Heathrow

1 stop

11h 55m
LHR

London Heathrow

MDW

Chicago Midway

1 stop

14h 04m
$651

KLM

View Deal

Deal found 5/23/22

Oct 5 - Nov 20
MDW

Chicago Midway

LHR

London Heathrow

1 stop

11h 45m
LHR

London Heathrow

MDW

Chicago Midway

1 stop

13h 33m
$658

KLM

View Deal

Deal found 5/24/22

Oct 4 - Oct 12
ORD

Chicago O'Hare Intl

LCY

London City

1 stop

10h 05m
LCY

London City

ORD

Chicago O'Hare Intl

1 stop

10h 50m
$668

KLM

View Deal

Deal found 5/23/22

Cheap Finnair flights from Illinois to London

Sep 28 - Oct 12
STL

Lambert-St Louis

LHR

London Heathrow

1 stop

13h 02m
LHR

London Heathrow

STL

Lambert-St Louis

2 stops

20h 03m
$720

Finnair

View Deal

Deal found 5/23/22

Sep 28 - Nov 14
STL

Lambert-St Louis

LHR

London Heathrow

1 stop

10h 47m
LHR

London Heathrow

STL

Lambert-St Louis

2 stops

33h 29m
$722

Finnair

View Deal

Deal found 5/23/22

Jun 3 - Dec 15
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 40m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 55m
$800

Finnair

View Deal

Deal found 5/23/22

Non-stop flights to London from Illinois

Save time with Illinois to London direct flight deals
Sep 15 - Sep 29
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 45m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 45m
$608

British Airways

View Deal

Deal found 5/23/22

Sep 29 - Oct 19
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 45m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 45m
$611

British Airways

View Deal

Deal found 5/23/22

Nov 19 - Nov 29
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 40m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 55m
$615

British Airways

View Deal

Deal found 5/23/22

Last minute flights from Illinois to London

Late deals on return flights to London from Illinois, departing today and this week
Jun 2 - Jun 7
ORD

Chicago O'Hare Intl

LHR

London Heathrow

3 stops

34h 50m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

3 stops

32h 55m
$660

Multiple Airlines

View Deal

Deal found 5/22/22

Jun 2 - Jun 8
ORD

Chicago O'Hare Intl

LHR

London Heathrow

3 stops

30h 30m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

3 stops

32h 55m
$664

Multiple Airlines

View Deal

Deal found 5/23/22

Jun 2 - Jun 8
ORD

Chicago O'Hare Intl

LHR

London Heathrow

3 stops

35h 29m
LHR

London Heathrow

ORD

Chicago O'Hare Intl

3 stops

32h 55m
$726

Multiple Airlines

View Deal

Deal found 5/23/22

One-way flights to London All airports from Illinois

The cheapest one-way flights from Illinois to London
Oct 2
ORD

Chicago O'Hare Intl

LGW

London Gatwick

1 stop

10h 25m
$264

Icelandair

View Deal

Deal found 5/25/22

Nov 21
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

10h 15m
$264

Icelandair

View Deal

Deal found 5/22/22

Aug 21
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

8h 15m
$266

Lufthansa

View Deal

Deal found 5/24/22

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.

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.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$20FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
TAP AIR PORTUGALCheapest$323Average$431FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search TAP AIR PORTUGAL flights
Norwegian Air UKCheapest$330Average$566FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Norwegian Air UK flights
NorwegianCheapest$334Average$477FlexibilityNo cancel feeOn-time74%COVID-19 safety
Search Norwegian flights
Scandinavian AirlinesCheapest$369Average$560FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Scandinavian Airlines flights

Hourly flight availability from Illinois to London

See what time of day planes typically take off from Illinois to London
1%of flight departuresEarly morningMidnight to 6 am
13%of flight departuresMorning6 am to noon
42%of flight departuresAfternoonNoon to 6 pm
44%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM