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Tips and tricks to help you find cheap flights from Chicago O'Hare to Ontario

Favorite airline: Alaska Airlines
94 % of travelers choose to book flights on this route with Alaska Airlines, American Airlines and United Airlines.
Alaska Airlines
59 %
American Airlines
29 %
United Airlines
6 %
Favourite connection: via Seattle-Tacoma
On this route, flights with a stopover in Seattle-Tacoma are the most popular.
Route
bookings
1 stopover Seattle-Tacoma International Airport, WA
09h 30min, from $457
62 %
1 stopover Phoenix - Sky Harbor International Airport
12h 13min, from $432
31 %
1 stopover Salt Lake City International Airport, UT
08h 01min, from $489
6 %
Flight details Chicago O'Hare - Ontario
  • Distance: 2733 km