When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 14% on flights from London to Illinois compared to booking the week you need them. Waiting 50 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 £542. For sooner than that we have options available in the next 3 days from £584.
February is one of the best times of the year to fly to Illinois from London. Prices for February average £529 per person but you can even find prices for as low as £308. The most expensive prices can be found in the month of July. Opting for a February flight can save you 28% on your journey compared to booking in July
When flying from London 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.
Fly from
Fly to
Budget
£370 - £445
Route
Depart
Return
Price
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Tue 4/6
1 stop28h 29m
Chicago O'Hare Intl
Tue 10/9
1 stop14h 11m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Sat 21/9
1 stop16h 10m
Chicago O'Hare Intl
Sun 6/10
1 stop12h 45m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 15/5
1 stop15h 55m
Chicago O'Hare Intl
Sun 19/5
1 stop31h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 8/5
1 stop13h 35m
Chicago O'Hare Intl
Wed 15/5
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 8/5
2 stops16h 03m
Chicago O'Hare Intl
Wed 15/5
1 stop13h 40m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 29/5
1 stop14h 00m
Chicago O'Hare Intl
Tue 3/12
1 stop14h 05m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 15/5
Nonstop8h 40m
Chicago O'Hare Intl
Sun 19/5
Nonstop7h 45m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Tue 28/5
1 stop14h 05m
Chicago O'Hare Intl
Mon 23/9
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Fri 17/5
1 stop11h 40m
Chicago O'Hare Intl
Tue 21/5
1 stop12h 55m
No data available for this route at this time. Please check back soon.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
Boarding
Crew
Food
Overall
Comfort
Entertainment
Reviews
Terrible flight crew that skipped our row for service multiple times.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
62%of flight departures | Morning6 am to noon |
37%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
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