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Cheap flights from Ontario (ONT) to Illinois (IL)

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Last minute flights from Ontario to Illinois

Late deals on round-trip flights to Illinois from Ontario, departing today and this week
14 Nov - 20 Nov
$195pp
ONT
Ontario
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
 
1 STOP
ONT
Ontario
15 Nov - 19 Nov
$222pp
ONT
Ontario
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
 
1 STOP
ONT
Ontario
16 Nov - 19 Nov
$247pp
ONT
Ontario
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
 
1 STOP
ONT
Ontario

Departure points for flights from Ontario to Illinois

Destination information for Illinois

Things to know before you go. Useful info for your trip from Ontario to Illinois

Airports servicing Ontario

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)

Related info for your journey

Useful info, stats and facts about Ontario to Illinois flights.

Flight FAQs

From Ontario to Illinois

What days are nonstop flights available from Ontario to Illinois?

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

How popular is this flight route?

The Ontario to Illinois flight path was viewed by 738 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the most popular airlines that fly from Ontario to Illinois?

When booking a flight from Ontario to Illinois, you may want to consider flying on Alaska Airlines, Delta or Frontier as they are the most popular for this route.

What are the most popular routes from Ontario to Illinois?

Most travelers choose Ontario - Chicago O'Hare Intl, Ontario - Chicago Midway or Ontario - Quincy Baldwin Field when deciding on the best route from Ontario to Illinois.

What are the cheapest Flights from Ontario to Illinois?

Looking for the cheapest flight from Ontario to Illinois? While on average our users pay $270, our data indicates the cheapest price to be $127. The most popular route (Ontario - Chicago O'Hare Intl), is priced around $195.