$95 Find Cheap Flights from Chicago to Ontario - Compare and Save

Some of the most typical layover airports for various airlines traveling from Chicago to Ontario are Phoenix Sky Harbor International Airport (PHX), Dallas/Fort Worth International Airport (DFW), and Denver International Airport (DEN). If you are flying with American Airlines, your layover airports will be PHX or DFW. DEN, on the other hand, serves as a layover airport for Frontier aircraft.

Although most airlines flying from Chicago to Ontario allow pets, booking with Alaska Airlines has a number of advantages for pet owners. When compared to other airlines on this route, Alaska features some of the lowest pet fees. Furthermore, pets are permitted to travel in-cabin as long as their combined weight with that of the carrier does not exceed 20 lbs.

Yes. Several airlines operating from Chicago to Ontario - including Delta, American Airlines, and Spirit Airlines - provide environmentally friendly flights between Chicago and Ontario. Among them, American Airlines leads the list as one of the most environmentally friendly airlines because of its carbon reduction projects, which aim to equip all of its planes with fuel-efficient engines.

Delta Airlines, American Airlines, and Spirit Airlines are among the airlines where you can upgrade to first class by adding a nominal fee to your ticket. By taking advantage of this opportunity, you can fly first class at a lower rate than if you booked first class directly.

In the last 5 days, the lowest price for a flight from Chicago to Ontario was $95 for a one-way ticket and $190 for a round-trip.

Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

On your way to Ontario, you’ll fly out from one of these Chicago airports: Chicago Midway or Chicago O'Hare Intl. You’ll be landing at Ontario.

American Airlines, Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Chicago to Ontario flight route.

The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Chicago to Ontario flight route.

SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Chicago and Ontario, with SkyTeam being the most commonly used for this route.

There are nonstop flights from Chicago to Ontario on a daily basis.

The two airlines most popular with KAYAK users for flights from Chicago to Ontario are Southwest and United Airlines. With an average price for the route of $527 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $522 and an overall rating of 7.4.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Ontario.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Chicago with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.