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 6% 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 £538. For sooner than that we have options available in the next 3 days from £553.
February is one of the best times of the year to fly to Illinois from London. Prices for February average £535 per person but you can even find prices for as low as £368. 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
£371 - £485
Route
Depart
Return
Price
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 6/11
1 stop15h 30m
Chicago O'Hare Intl
Wed 13/11
1 stop14h 15m
London GatwickChicago Midway
LGW - MDW
LGWMDW
London Gatwick
Tue 11/6
1 stop27h 31m
Chicago Midway
Tue 9/7
1 stop29h 23m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Sat 2/11
1 stop17h 25m
Chicago O'Hare Intl
Sat 9/11
2 stops16h 20m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 4/9
1 stop14h 10m
Chicago O'Hare Intl
Tue 24/9
1 stop18h 55m
London GatwickChicago O'Hare Intl
LGW - ORD
LGWORD
London Gatwick
Tue 24/9
1 stop12h 40m
Chicago O'Hare Intl
Wed 9/10
1 stop16h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Thu 7/11
1 stop13h 10m
Chicago O'Hare Intl
Wed 13/11
1 stop12h 25m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 28/10
Nonstop8h 55m
Chicago O'Hare Intl
Mon 4/11
1 stop13h 02m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Tue 10/9
Nonstop8h 40m
Chicago O'Hare Intl
Tue 24/9
1 stop19h 35m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 16/9
Nonstop8h 40m
Chicago O'Hare Intl
Mon 23/9
Nonstop7h 50m
No data available for this route at this time. Please check back soon.
Crew
Boarding
Comfort
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.
Crew
Boarding
Comfort
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.
Crew
Boarding
Comfort
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.
Crew
Boarding
Comfort
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.
Crew
Boarding
Comfort
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.
Crew
Boarding
Comfort
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.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
58%of flight departures | Morning6 am to noon |
41%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
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