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Cheap flights from Chicago to Ontario
Round-trip
Economy
Flight information for Chicago to Ontario
(CHI to ONT)
Find info about flight duration, direct flights, and airports for your flight from Chicago to Ontario
| Best Price Found | $170 | The best flight deal from Chicago to Ontario found on momondo in the last 72 hours is $170 |
| Fastest flight time | 4h 11m | The fastest flight from Chicago to Ontario takes 4h 11m |
| Direct flights | None | There are no direct flights from Chicago to Ontario. Popular non-direct routes for this connection are Chicago O'Hare Intl - Ontario and Chicago Midway - Ontario. |
| Airports in Ontario | 1 airport | There is 1 airport near Ontario: Ontario (ONT) |
How to get the cheapest flight ticket from Chicago to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from Chicago to Ontario?
August
The cheapest time of year to fly to Ontario from Chicago is August. Most expensive is December
What is the cheapest day to depart Chicago for Ontario?
Saturday
The cheapest day of the week is typically Saturday. The most expensive is typically Sunday
When is the cheapest time to fly from Chicago to Ontario?
in the afternoon
Chicago to Ontario flights are approximately 26% more expensive in the evening than in the afternoon
What is the cheapest airline that flies to Ontario from Chicago?
Alaska Airlines
Alaska Airlines, Spirit Airlines, and Frontier are the most popular carriers operating from Chicago to Ontario
What is the cheapest Chicago to Ontario flight route?
Chicago O'Hare Intl - Ontario
Fly from Chicago O'Hare Intl to Ontario for the best Chicago - Ontario flight prices
How far in advance should you book Chicago to Ontario flights?
12 days before
The cheapest time to buy a flight from Chicago to Ontario is approximately 12 days to departure
60
Days before departure
0
Easily compare round-trip flights from Chicago to Ontario
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to Ontario by changing tabs
Frontier![Frontier]()
Aug 20![Frontier]()
Aug 20
ORD4:59 pmChicago O'Hare Intl
4h 15m
ONT9:14 pmOntario
ONT8:14 pmOntario
4h 00m
ORD12:14 amChicago O'Hare Intl
Frontier![Frontier]()
Aug 20![Frontier]()
Aug 21
ORD4:59 pmChicago O'Hare Intl
4h 15m
ONT9:14 pmOntario
ONT8:14 pmOntario
4h 00m
ORD12:14 amChicago O'Hare Intl
Find the cheapest one-way flights from Chicago to Ontario
If you're looking for one-way flights from Chicago to Ontario, view some of our deals below provided by Frontier
Best airlines flying from Chicago to Ontario
Compare and see reviews for airlines that fly from Chicago to Ontario with momondo
AirlineFree CancellationPrice
PriceFrom $112
Free Cancellation
Reviews
Pros: Everything good
1 / 10
PriceFrom $114
Free Cancellation
Reviews
Pros: Delayed flight no reasons seems like American Airlines don’t know what to do in these situations
Cons: I believe this airlines should have figured the answer to this question by now.
1 / 10
PriceFrom $114
Free Cancellation
Reviews
Pros: Everything! From ticketing agent to all the crew on our flight back were awesome. Thank you!
1 / 10
PriceFrom $122
Free Cancellation
Reviews
Cons: Wouldn't let us on the flight when there was plenty of time to get there. Manager was arrogant and slow - didn't care. Poor policies at that airport.
1 / 10
PriceFrom $144
Free Cancellation
Reviews
Pros: Well, it was not very comfortable and we were delayed for an hour. And a crew member was sick.
Cons: Mostly everything.
1 / 10
Are airlines flying from Chicago to Ontario offering flexible cancellation due to COVID-19?
To ease the stress of booking flights, some of our airline partners flying from Chicago to Ontario are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: American Airlines, United Airlines, and Delta.
How far is Chicago to Ontario by plane?
The distance between Chicago and Ontario is about 1710.7 mi. In terms of flight time, this usually takes a little over 4h 11m.
Can I fly to Ontario from Chicago right now?
Information is based on travel restrictions for travel to Ontario within the United States
Most visitors from Chicago need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.
COVID-19 testing requirements
Visitors from Chicago must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.
Quarantine requirements
Visitors from Chicago are not required to quarantine after entering Ontario.
Most visitors from Chicago need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.
COVID-19 testing requirements
Visitors from Chicago must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.
Quarantine requirements
Visitors from Chicago are not required to quarantine after entering Ontario.
Can I fly back to Chicago from Ontario?
Returning to Chicago from Ontario
COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Chicago.
Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Chicago.
COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Chicago.
Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Chicago.