When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 28 days in advance, which can save you up to 8% on flights from London to Illinois compared to booking the week you need them. Waiting 28 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 £544. For sooner than that we have options available in the next 3 days from £559.
February is one of the best times of the year to fly to Illinois from London. Prices for February average £541 per person but you can even find prices for as low as £371. The most expensive prices can be found in the month of July. Opting for a February flight can save you 27% 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
£396 - £441
Route
Depart
Return
Price
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 28/10
1 stop12h 45m
Chicago O'Hare Intl
Mon 4/11
1 stop14h 10m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Tue 17/9
1 stop14h 05m
Chicago O'Hare Intl
Mon 23/9
1 stop13h 20m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 25/9
Nonstop8h 40m
Chicago O'Hare Intl
Wed 9/10
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 28/10
1 stop11h 50m
Chicago O'Hare Intl
Thu 7/11
1 stop11h 15m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Wed 25/9
1 stop15h 00m
Chicago O'Hare Intl
Wed 9/10
1 stop17h 00m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Fri 13/9
1 stop14h 00m
Chicago O'Hare Intl
Sun 15/9
1 stop12h 45m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 18/9
1 stop14h 05m
Chicago O'Hare Intl
Wed 25/9
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 18/9
1 stop14h 05m
Chicago O'Hare Intl
Wed 25/9
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 9/9
Nonstop8h 55m
Chicago O'Hare Intl
Thu 3/10
Nonstop8h 05m
No data available for this route at this time. Please check back soon.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Boarding
Comfort
Crew
Overall
Food
Entertainment
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
0%of flight departures | Early morningMidnight to 6 am |
---|---|
61%of flight departures | Morning6 am to noon |
39%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
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