$90 Cheap Flights from Chicago to Ontario

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from O'Hare Intl. to Los Angeles - Ontario Intl.

Amazing ORD to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $168 round trip and $90 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from O'Hare Intl. Airport (ORD) to Ontario Airport right now?
It’s always wise to find out about any travel advice reports and quarantine requirements in effect in your destination. Ensure you go to our Covid-19 Travel Advisor for up-to-date info on flying to Los Angeles - Ontario Intl. Airport (ONT).
Are there direct flights from O'Hare Intl. Airport (ORD) to Los Angeles - Ontario Intl. Airport (ONT)?
Multiple airlines offer nonstop flights from O’Hare Airport to ONT. These include American Airlines and Frontier Airlines — start with them if you’d like to get to Ontario as fast as possible.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Ontario Airport, please visit our Customer Service Portal.
How long is the flight from ORD to Ontario Airport?
If you’re traveling from Chicago to Ontario, you can expect the trip to take around 6 hours and 12 minutes. If this sounds like more time than you anticipated, why not take advantage of it? Read up on where you’re headed, work on your itinerary and get as much sleep as possible before the adventure starts.
What is the flight distance from ORD to ONT?
With a flight distance of 1,700 mi between O’Hare Airport and Los Angeles - Ontario Intl. Airport (ONT), you’re going to be cruising the skies for a decent amount of time. It’s the perfect opportunity to get engrossed in a film, clear some emails or just chill out with some music.
What airlines fly from O'Hare Intl. Airport (ORD) to Ontario Airport?
If you’re heading to Ontario from Chicago, you’ll find a few airlines that fly direct. One of the most well-known is American Airlines (AA), which operates 30 flights every month. You’ll want to also pore through the deals available through Frontier Airlines (F9). This carrier operates 4 flights every month on the Chicago to Ontario route. Be sure to compare the two airlines to pick up the best fare.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From O'Hare Intl.
Traveling To Los Angeles - Ontario Intl.
Shortest Flight Time hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price $168

Route Info

Flight path for flights from O'Hare International Airport to LA/Ontario International Airport

1,771.00 miles

Airlines & Aircraft Used on ORD to ONT Flight Routes

Airline Carrier
American Airlines
Boeing 737-400 pax
United Airlines
Aerospatiale/Alenia ATR 72

Discover our best flights from Chicago ORD to Ontario ONT. 

With 3 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Chicago ORD to Ontario ONT at the right price  

Airfares to Ontario ONT from Chicago ORD currently cost between $168 and $222. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Chicago ORD to Ontario ONT 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Chicago ORD to Ontario ONT on Travelocity starting at $90. Prices and availability subject to change. Additional terms may apply. 


Get to Ontario ONT from Chicago ORD quicker with direct flights. 

Get to Ontario faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to ONT from ORD to take around hour(s) min(s).  


Find our cheapest airfares for flights from Chicago ORD to Ontario ONT

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to ONT from ORD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Chicago ORD to Ontario ONT today 

If you’re flexible about when you travel, February is usually the cheapest month to fly from Chicago ORD to Ontario ONT. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Ontario ONT from Chicago ORD 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to ONT from ORD have this option.  


Travel with confidence when you book flights to Ontario ONT from Chicago ORD with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.