When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 52 days in advance, which can save you up to 5% on flights from London to Illinois compared to booking the week you need them. Waiting 52 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 £527. For sooner than that we have options available in the next 3 days from £554.
February is one of the best times of the year to fly to Illinois from London. Prices for February average £532 per person but you can even find prices for as low as £366. The most expensive prices can be found in the month of July. Opting for a February flight can save you 26% 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
£366 - £436
Route
Depart
Return
Price
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 4/11
1 stop12h 55m
Chicago O'Hare Intl
Mon 18/11
Nonstop8h 05m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Sun 3/11
1 stop13h 45m
Chicago O'Hare Intl
Sun 10/11
1 stop13h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 4/11
Nonstop9h 25m
Chicago O'Hare Intl
Mon 18/11
Nonstop8h 00m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Thu 7/11
1 stop29h 35m
Chicago O'Hare Intl
Sun 17/11
1 stop13h 20m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Tue 10/9
1 stop12h 54m
Chicago O'Hare Intl
Mon 23/9
1 stop29h 06m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Sat 21/9
Nonstop8h 55m
Chicago O'Hare Intl
Sat 21/9
1 stop33h 05m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Mon 23/9
1 stop23h 35m
Chicago O'Hare Intl
Mon 30/9
1 stop31h 41m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Tue 24/9
1 stop14h 14m
Chicago O'Hare Intl
Tue 8/10
1 stop14h 00m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Tue 12/11
Nonstop9h 20m
Chicago O'Hare Intl
Tue 26/11
Nonstop8h 05m
No data available for this route at this time. Please check back soon.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
Overall
Boarding
Food
Crew
Entertainment
Comfort
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.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
51%of flight departures | Morning6 am to noon |
48%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
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