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Cheap Flights From Ontario, California To Illinois

Cheap flights from Ontario, California (ONT) to popular destinations in Illinois (IL)

Chicago
Carrier Departure Date Return Date Lowest Price
United Oct 3, 2018 Oct 6, 2018 $226
American Sep 6, 2018 Sep 12, 2018 $235
United Sep 6, 2018 Sep 12, 2018 $236
United Sep 29, 2018 Oct 1, 2018 $236
United Sep 13, 2018 Sep 18, 2018 $236
United Aug 22, 2018 Aug 27, 2018 $236
United Sep 13, 2018 Sep 17, 2018 $246
Frontier Oct 16, 2018 Oct 24, 2018 $268
Frontier Aug 22, 2018 Aug 29, 2018 $268
American May 14, 2018 May 15, 2018 $270

Cheap Last Minute Flights from Ontario, California to Illinois Prices shown were found by travelers like you over the past 30 days

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from Ontario, California to Illinois. The chart below shows the best last minute deals and cheap flights this weekend we could find.

DestinationDepartingReturningPrice
Chicago 5/4/18 5/7/18 $314
Moline 5/24/18 5/28/18 $741

Flight Schedule Summaries Last modified: Apr 21, 2018 4:55 -04:00Number of routes searched: 548Number of itineraries searched: 247,480

Ontario, California to Chicago
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American -
Alaska -
United -
Virgin America -
American PHX
American SEA
American ABQ
American ASE
Alaska PDX
Alaska SEA
Alaska SFO
Major Airlines SLC
Major Airlines ATL
Major Airlines DTW
Major Airlines MSP
Major Airlines CVG
Frontier DEN
United DEN
United SFO
United ABQ
United ASE
Virgin America SFO

Cheap Domestic Flights from Ontario - ONT Last modified: Apr 21, 2018 4:55 -04:00Prices shown were found by travelers like you over the past 30 days

On FareCompare, you’ll find cheap flights for domestic and international travel. Since airlines change flight prices constantly, sign up for Fare Alerts and let FareCompare’s travel search engine monitor airline ticket prices of all major airlines, so you’ll be first in line to get the cheapest tickets.
Cheap Flights from Ontario, California to Illinois - from $226 Round trip from ONT to IL