Nonstop flights from Chicago to Ontario
Southwest Airlines flies this route daily.
MDWChicago Midway International
1,703 mi · 7 flights a week
ONTOntario International
When they leave
Chicago time2:00p9:25pFirst departure 2:00 PM, last 9:25 PM
One afternoon flight at 2:00 PM, then one evening flight at 9:25 PM.
Every flight
Earliest first
Schedules last checked Sep 19, 2026. Times are local.
Flying from Chicago to Ontario
Southwest Airlines is the only airline flying nonstop from Chicago to Ontario, daily on the Boeing 737 MAX 8.
The first arrival in Ontario is at 4:10 PM and the last at 11:35 PM. The flight covers 1,703 miles.
Flying back, Ontario to Chicago has 7 nonstop flights a week. O'Hare (ORD) also has nonstop flights to Ontario, 7 a week.
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Schedules as of Oct 9, 2026.