
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $533 (TravelUp) |
One-way from | $394 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $624 |
Good round-trip deal | $674 or less |
Good one-way deal | $654 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sat 2/7
12:50 pm-7:15 pm
1 stop12h 25m
Chicago O'Hare Intl
Wed 2/18
6:30 pm-8:15 am
Nonstop7h 45m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sat 2/7
12:50 pm-7:15 pm
1 stop12h 25m
Chicago O'Hare Intl
Sat 2/14
6:48 pm-12:00 pm
1 stop11h 12m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Thu 2/12
7:50 am-7:15 pm
1 stop17h 25m
Chicago O'Hare Intl
Fri 2/27
9:00 pm-7:50 pm
1 stop16h 50m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Wed 3/4
8:50 am-2:00 pm
1 stop11h 10m
Chicago O'Hare Intl
Tue 3/10
9:35 pm-10:25 am
Nonstop7h 50m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Tue 2/10
7:40 am-2:10 pm
1 stop12h 30m
Chicago O'Hare Intl
Mon 3/2
3:45 pm-5:55 am
Nonstop8h 10m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Tue 2/17
8:30 am-3:20 pm
1 stop12h 50m
Chicago O'Hare Intl
Mon 3/2
9:15 pm-11:15 am
Nonstop8h 00m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sat 3/7
1:30 pm-11:44 pm
2 stops16h 14m
Chicago O'Hare Intl
Sat 3/14
9:15 pm-6:40 am
1 stop28h 25m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Thu 4/16
7:40 am-2:00 pm
1 stop12h 20m
Chicago O'Hare Intl
Wed 4/22
11:21 am-6:25 am
1 stop13h 04m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Thu 4/16
7:40 am-2:00 pm
1 stop12h 20m
Chicago O'Hare Intl
Tue 4/21
4:16 pm-9:10 am
1 stop10h 54m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Mon 4/13
1:25 pm-7:15 pm
1 stop11h 50m
Chicago O'Hare Intl
Sun 4/19
4:49 pm-10:15 am
1 stop11h 26m
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Illinois (average of $475). Flying from London Heathrow Airport to Illinois in July is currently the most expensive (average of $673). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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.
The most flights from LHR to USIL are scheduled on a Wednesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
Entertainment
Overall
Comfort
Crew
Food
Boarding
Reviews
Anonymous,Dec 2025
VIE - DXB
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$446 | Average$672 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$477 | Average$588 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$485 | Average$647 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$530 | Average$897 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$550 | Average$771 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$558 | Average$789 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$558 | Average$778 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$572 | Average$776 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$576 | Average$733 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$720 | Average$838 | FlexibilityNo cancel fee | On-time76% |