CA $165 Cheap Flights from Ontario Intl. Airport (ONT) to Chicago (ORD)

You can find cheap one-way flights from CA $165 and cheap return flights CA $356 ONT to ORD with Expedia. Return flights often range between CA$752 and CA$1503. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to ORD ticket fares go up or down.

If you're looking for the cheapest time to fly from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.), August is typically your best bet. You can expect average return flights to be around CA$495 during this month. August often sees lower prices as the peak summer travel season winds down, and families are preparing for the school year. Other budget-friendly months to consider for this route include June and September.

Only one airline offers direct flights from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.). United operates 14 direct flights from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) every week.

To find a cheap flight from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Alaska Airlines offers the most daily flights from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) is typically August or September. These months offer a great balance, with return flights averaging around CA$495.

You'll find approximately 2 nonstop flights per day from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.). For even more choices, look at flights that include layovers, as there are around 41 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Dallas-Fort Worth Intl. (DFW), and Portland Intl. (PDX).

The earliest flight from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) typically departs around 12:55 AM local time, operated by American Airlines. This is a seasonal service active in February and March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) on a Thursday, with around 40 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, Alaska Airlines, and United. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices no matter which day you choose to fly.

The most popular departure times for flights from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) are in the morning, from 6am to 9am. Many major carriers, including United, American Airlines and Alaska Airlines, offer flights during this window. This timing works well for travelers who want to arrive in Chicago early and make the most of their day.

When flying from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.), you have a few options. A nonstop flight typically takes around 4 hours 18 minutes, covering a distance of approximately 2729 kilometres. If you opt for a one-stop flight, your travel time will be longer, usually around 6 hours 48 minutes. Flights with two or more stops generally take even longer, averaging about 13 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.

Yes, you can fly business class or first class between ONT and ORD. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.

It's easy to earn miles on a Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

From Los Angeles - Ontario Intl. (ONT), you can fly directly into O'Hare Intl. (ORD) in Chicago. Some flights may connect through major hubs like Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), or Sky Harbor Intl. (PHX) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Ontario Intl. Airport (ONT) to Chicago, IL (ORD-O'Hare Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.