$109 Find Cheap Flights from Ontario to Chicago O'Hare Airport - Compare and Save

These are the earliest and latest flight times available from Ontario to Chicago O'Hare Intl Airport:

• Earliest: departs at 6:12 am and lands at 10:19 am
• Latest: departs at 11:52 pm and lands at 3:59 am.

The flight takes about 4h 07m.

Two cabin classes are available on flights from Ontario to Chicago O'Hare Intl Airport:

• Economy Class
• First Class

A nonstop flight from Ontario to Chicago O'Hare Intl Airport takes 4h 07m, covering 1,695 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Ontario to Chicago O'Hare Intl Airport range from $337 to $522, with an average of $428 over the past 12 months. Anything below $337 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 12% above the $428 route average. Book 9 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $225 round-trip via Houston George Bush Intcntl (IAH), compared to $449 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-800 family is used most often on this route, operated mainly by United Airlines and Delta. Other aircraft seen on the route include Airbus A321neo variants.

Morning is the busiest departure period on Ontario to Chicago O'Hare Intl Airport flights, with 100% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

American Airlines is the only airline on the Ontario to Chicago O'Hare Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Ontario to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about $125, which is 48% below the typical average for this route.

Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates starting from around $17 for economy cars. Top options include:

• Routes Car & Truck Rentals
• Europcar
• Hertz
• Dollar
• Ace

Flights from Ontario to Chicago O'Hare Intl Airport usually depart from Ontario (ONT) and arrive at Chicago O'Hare Intl (ORD).

One-stop flights from Ontario to Chicago O'Hare Intl Airport most commonly connect through:

• Denver Intl (DEN) - 23% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) - 23% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 19% of one-stop connections
• Salt Lake City (SLC) - 18% of one-stop connections

Yes. Flexible dates can save you up to 21% on flights from Ontario to Chicago O'Hare Intl Airport. Saturday is the cheapest departure day at $390 round-trip on average, while Monday is the most expensive at $489, a difference of $99.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

2 airlines operate flights between Ontario and Chicago O'Hare Intl Airport. The airlines offering nonstop flights on this route include:

• United Airlines
• American Airlines

Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 6h 24m, compared with 6h 34m via Salt Lake City (SLC) and 7h 34m via Dallas Love Field (DAL).

Chicago O'Hare Intl Airport is 2 hours ahead of Ontario (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, Grant Park and Soldier Field. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

Among airlines operating Ontario to Chicago O'Hare Intl Airport flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

The means of transport you choose will determine how fast you will get downtown and how much you will likely spend. If you are on a budget, take CTA public bus or the suburban public bus as a public means of transport. Consider a taxi as a mode of transfer if you are getting late for your appointment. Shared Ride Shuttle, Trains, Airport shuttles, and Car rentals are also available.

ONT is the busiest airport in the region, thus experiencing long security lines and insane traffic. To navigate through the lines, ensure you get to the airport 2-3h before your scheduled departure time.

If you are looking forward to sleeping at the airport, there is one onsite hotel with a free airport shuttle connected to all Terminals via an underground walkway. The Hilton Chicago O' Hare Airport Hotel is located in Terminal 2. However, suppose you miss a room at this hotel. In that case, nearby hotels offer free bus shuttles, like Aloft Chicago O'Hare and The Crowne Plaza Chicago O'Hare Hotel and Conference Center.

If you love airline layover options, consider flying with Spirit Airlines and Frontier Airlines. Both tend to have their layover option at Las Vegas Harry Reid International Airport (LAS).