Flight Routes from Chicago to Ontario

Compare cheap outbound and return flights from Chicago (CHI) to Ontario (ONT) and find the best offer from numerous airlines and travel agencies.

Trip type
Fastest outbound flight
Fastest inbound flight
non-stop flights
9x / week
Flight distance
2,754 km
Time difference
Airports in Chicago
  1. O'Hare International Airport, IL
  2. Midway International Airport, IL
  3. Rockford, IL

Flight schedule from Chicago (CHI) to Ontario (ONT)

Select a travel date in the flight schedule for the route from Chicago (CHI) to Ontario (ONT) and compare affordable flight deals.

offers
Active filtersnone
Matching outbound flights7 of 7
fromto
dep.arr.
durationstopovers
  1. September 6 – 12, 2026
  2. September 13 – 19, 2026
  3. September 20 – 26, 2026
    1. MDWONT
      nonstop
      1. Southwest Airlines
    2. MDWONT
      nonstop
      1. Southwest Airlines
    3. MDWONT
      nonstop
      1. Southwest Airlines
    4. MDWONT
      nonstop
      1. Southwest Airlines
    5. ORDONT
      nonstop
      1. United Airlines
    6. ORDONT
      nonstop
      1. United Airlines
    7. MDWONT
      nonstop
      1. Southwest Airlines

      Important flight information

      Discover more flights around Chicago and Ontario

      Departure airport Airport Chicago-IL, all airports (CHI)
      Arrival airport Airport Ontario-CA (ONT)
      Destination country Flights to United States
      Departure airport - Destination country Chicago-IL, all airports - United States
      Alternative flights to Ontario