Generally the best time to book Chicago to Milwaukee flights is two months in advance. And the cheapest days to fly are Tuesdays, Wednesdays, and Saturdays. Sunday is the most expensive.
There are 88 direct flights from Chicago to Milwaukee.
United Airlines provides 61 of the non-stop flights between Chicago and Milwaukee.
|Airlines flying this route:||American Airlines Alaska Airlines Avianca United Airlines|
|Airports in Chicago:||O'Hare International Airport Midway International Airport Rockford International Airport|
|Airports in Milwaukee:||General Mitchell International Airport|
|Average duration of direct flights:||0h52m|