To save up to 14% on this flight, we recommend booking at least 50 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 £538 1-2 weeks out and tickets from £579 for flights departing within the next 72 hours.
February can be a great time to fly to Illinois from London Heathrow Airport with a flight ticket averaging about £524. Cheapflights users have found deals in the month of February for as cheap as £306. The most expensive prices can be found in the month of July.
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.
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 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 Midway
LHR - MDW
LHRMDW
London Heathrow
Mon 28/10
2 stops15h 33m
Chicago Midway
Mon 4/11
1 stop15h 04m
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
Entertainment
Comfort
Crew
Overall
Food
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
Entertainment
Comfort
Crew
Overall
Food
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
Entertainment
Comfort
Crew
Overall
Food
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
Entertainment
Comfort
Crew
Overall
Food
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
Entertainment
Comfort
Crew
Overall
Food
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
Entertainment
Comfort
Crew
Overall
Food
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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