Find flights
Deals
Airlines
Travel Guide
English
Return from | £396 |
---|---|
One-way from | £355 |
Popular in | July |
Cheapest in | February |
Average price | £542 |
Good round-trip deal | £493 or less |
Good one-way deal | £468 or less |
Fly from
Route
Depart
Return
Price
LondonChicago
LTN - ORD
LTNORD
London Luton
Wed 3/12
06:50-17:20
2 stops16h 30m
Chicago O'Hare Intl
Wed 10/12
18:30-23:05
2 stops22h 35m
LondonChicago
STN - ORD
STNORD
London Stansted
Wed 3/12
06:30-17:20
2 stops16h 50m
Chicago O'Hare Intl
Wed 10/12
18:30-15:05
2 stops14h 35m
LondonChicago
LGW - ORD
LGWORD
London Gatwick
Thu 13/11
16:00-15:25
1 stop29h 25m
Chicago O'Hare Intl
Sun 16/11
20:25-09:50
1 stop31h 25m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Fri 7/11
07:05-16:45
2 stops15h 40m
Chicago O'Hare Intl
Mon 10/11
19:20-18:50
2 stops17h 30m
LondonChicago
STN - ORD
STNORD
London Stansted
Fri 21/11
21:45-16:45
2 stops25h 00m
Chicago O'Hare Intl
Sun 30/11
19:20-23:00
2 stops21h 40m
LondonChicago
STN - ORD
STNORD
London Stansted
Thu 13/11
08:30-14:00
1 stop11h 30m
Chicago O'Hare Intl
Fri 28/11
19:40-16:35
1 stop14h 55m
LondonChicago
LTN - ORD
LTNORD
London Luton
Mon 24/11
08:50-17:55
1 stop15h 05m
Chicago O'Hare Intl
Mon 1/12
15:50-08:35
1 stop10h 45m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Mon 17/11
10:20-16:45
1 stop12h 25m
Chicago O'Hare Intl
Thu 27/11
19:20-16:25
2 stops15h 05m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Wed 3/12
21:05-16:45
2 stops25h 40m
Chicago O'Hare Intl
Wed 10/12
19:20-17:40
1 stop16h 20m
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Wed 12/11
19:30-16:45
1 stop27h 15m
Chicago O'Hare Intl
Sat 29/11
19:20-18:30
1 stop17h 10m
On average, a flight from London to Illinois takes 18 hours 24 minutes. Flights to Illinois from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.
Users looking for the lowest fares to Illinois should consider flying on Thursday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday afternoons, when prices are usually at their highest.
The most flights from London to Illinois are scheduled on a Saturday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).
The most popular airlines flying from London to Illinois are British Airways, Lufthansa and Icelandair.
The cheapest airlines flying from London to Illinois are Icelandair, Virgin Atlantic and Scandinavian Airlines.
In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Boarding
Food
Comfort
Crew
Entertainment
Overall
Reviews
Anonymous,May 2025
FRA - DFW
Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.
Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.
Deals for Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.
Millions of users choose and trust Cheapflights to book the best flight deals to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Certainly. Search results for flights to Illinois shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Not ready to book yet? You can track prices for flights to Illinois on Cheapflights with our Price Alerts feature and get notified when better prices are available.