Cheap flights from Heathrow to Illinois

LHR — ORD
30 May — 6 Jun1
Return
1 adult
Economy
From?
To?
Mon 30/5
Mon 6/6

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

To save up to 32% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from London Heathrow Airport to Illinois from £426 1-2 weeks out and tickets from £514 for flights departing within the next 72 hours.

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

October can be a great time to fly to Illinois from London Heathrow Airport with a flight ticket averaging about £398. Cheapflights users have found deals in the month of October for as cheap as £279. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from London Heathrow Airport to Illinois (LHR - IL)?

When flying from London Heathrow Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from Heathrow to Illinois in May, June 2022

The best prices found for LHR to Illinois flights in May, June
23 Jun - 29 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 40m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

20h 10m
£374

Multiple Airlines

View Deal

Deal found 23/5/22

22 Jun - 29 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 40m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

20h 10m
£377

Multiple Airlines

View Deal

Deal found 23/5/22

23 Jun - 28 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 40m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

20h 10m
£393

Multiple Airlines

View Deal

Deal found 23/5/22

Heathrow to Illinois 2022 flight deals

Cheap flights to Illinois from Heathrow found for this year
12 Sep - 26 Sep
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

17h 50m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

23h 25m
£330

Multiple Airlines

View Deal

Deal found 23/5/22

12 Sep - 26 Sep
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

17h 50m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

23h 25m
£332

Multiple Airlines

View Deal

Deal found 24/5/22

23 Nov - 30 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 45m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

21h 30m
£344

Multiple Airlines

View Deal

Deal found 25/5/22

Cheap American Airlines flights from Heathrow to Illinois

1 Nov - 8 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

13h 05m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

32h 10m
£410

American Airlines

View Deal

Deal found 23/5/22

1 Nov - 8 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

15h 55m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

32h 10m
£411

American Airlines

View Deal

Deal found 25/5/22

1 Nov - 8 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

13h 05m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

18h 00m
£411

American Airlines

View Deal

Deal found 24/5/22

Cheap Icelandair flights from Heathrow to Illinois

20 Sep - 28 Sep
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

11h 15m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

10h 30m
£414

Icelandair

View Deal

Deal found 24/5/22

24 Oct - 31 Oct
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

26h 55m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

10h 15m
£415

Icelandair

View Deal

Deal found 24/5/22

2 Jun - 15 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

14h 25m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

1 stop

15h 30m
£502

Icelandair

View Deal

Deal found 22/5/22

Direct flights to Illinois from Heathrow

Save time with Heathrow to Illinois direct flight deals
1 Nov - 28 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

9h 00m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 40m
£414

British Airways

View Deal

Deal found 23/5/22

1 Nov - 8 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 55m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 40m
£421

British Airways

View Deal

Deal found 25/5/22

2 Nov - 24 Nov
LHR

London Heathrow

ORD

Chicago O'Hare Intl

Nonstop

8h 50m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

Nonstop

7h 35m
£430

British Airways

View Deal

Deal found 24/5/22

Last-minute flights from Heathrow to Illinois

Late deals on return flights to Illinois from Heathrow, departing today and this week
2 Jun - 5 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 40m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

29h 40m
£422

Multiple Airlines

View Deal

Deal found 23/5/22

2 Jun - 5 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

1 stop

13h 45m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

29h 40m
£431

Multiple Airlines

View Deal

Deal found 23/5/22

4 Jun - 8 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

16h 40m
ORD

Chicago O'Hare Intl

LHR

London Heathrow

2 stops

14h 35m
£438

Multiple Airlines

View Deal

Deal found 24/5/22

One-way flights to Illinois from Heathrow

The cheapest one-way flights from Heathrow to Illinois
30 Aug
LHR

London Heathrow

ORD

Chicago O'Hare Intl

3 stops

38h 11m
£272

Multiple Airlines

View Deal

Deal found 24/5/22

14 Jun
LHR

London Heathrow

ORD

Chicago O'Hare Intl

3 stops

38h 50m
£287

Multiple Airlines

View Deal

Deal found 25/5/22

7 Sep
LHR

London Heathrow

ORD

Chicago O'Hare Intl

2 stops

29h 18m
£289

Multiple Airlines

View Deal

Deal found 23/5/22

Related info for your journey

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

Which airlines flying from London Heathrow to Illinois have flexible cancellations due to COVID-19?

Some of our airline partners flying from London Heathrow to Illinois have new flexible policies in place due to COVID-19. Finnair, British Airways, and Virgin Atlantic are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Finnair with this kind of flexibility.

Can I find flights from London Heathrow Airport to Illinois for under £400 on Cheapflights?

Yes, there are multiple flights from London Heathrow Airport to Illinois for under £400. The cheapest flight booked recently is on Multiple Airlines for just £330, but on average you can expect to pay £368.

Are there nonstop flights from London Heathrow Airport to Illinois for under £500 on Cheapflights?

Cheapflights has at least 20 direct flights from London Heathrow Airport to Illinois under £500. A good price for a nonstop flight from London Heathrow Airport to Illinois is less than £459.

Are there last-minute flights available from London Heathrow Airport to Illinois for under £500?

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

What days are nonstop flights available from London Heathrow Airport to Illinois?

Days when nonstop flights are available for this flight are: Sunday, Wednesday, Thursday, Friday.

How many flights depart from London Heathrow Airport to Illinois on average per day?

Per day, 15 flights depart from London Heathrow Airport to Illinois on average.
Morning (6am - Noon) - 67% of flight departures
Afternoon (Noon - 6pm) - 33% of flight departures

How long is the flight from London Heathrow Airport to Illinois?

Departing from London Heathrow Airport to Illinois will take you 14h 05m. The distance from London Heathrow Airport to Illinois is about 3964 mi.

What are the most popular routes from London Heathrow Airport to Illinois?

The most popular flight routes from London Heathrow Airport to Illinois are London Heathrow - Chicago O'Hare Intl, London Heathrow - Chicago Midway and London Heathrow - Lambert-St Louis.

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

When booking a flight from London Heathrow Airport to Illinois, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

What are the most reliable airlines from London Heathrow Airport to Illinois?

Before booking your flight to Illinois from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (98%), Gulf Air (95%), Qatar Airways( 94%).

What are the cheapest flights from London Heathrow Airport to Illinois?

Looking at all options, your cheapest flight can be booked for £511. While the most popular route (London Heathrow - Chicago O'Hare Intl) can be booked for £346 on average our data indicates £1,793 when flying from London Heathrow Airport to Illinois.

Destination points for flights from Heathrow to Illinois

Select to see more specific information for flights from Heathrow to all places in Illinois

Top 5 airlines flying from Heathrow to Illinois

The chart below displays the airlines Cheapflights users travelling from Heathrow to Illinois choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
DeltaCheapest£264Average£457FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
TAP AIR PORTUGALCheapest£298Average£429FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£352Average£568FlexibilityNo cancel feeOn-time72%COVID-19 safety
Search Virgin Atlantic flights
IcelandairCheapest£388Average£518FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Icelandair flights
Scandinavian AirlinesCheapest£390Average£553FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Scandinavian Airlines flights

Hourly flight availability from Heathrow to Illinois

See what time of day planes typically take off from Heathrow to Illinois
1%of flight departuresEarly morningMidnight to 6 am
87%of flight departuresMorning6 am to noon
12%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM