Fly from
Fly to
Budget
$503 - $927
Route
Depart
Return
Price
London LutonChicago O'Hare Intl
LTN - ORD
LTNORD
London Luton
Thu 10/17
2 stops19h 23m
Chicago O'Hare Intl
Wed 10/23
2 stops20h 25m
London LutonLambert-St Louis
LTN - STL
LTNSTL
London Luton
Thu 10/31
2 stops25h 25m
Lambert-St Louis
Fri 11/8
2 stops19h 20m
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).