Question 1

Which is the best airline for flights from Ontario to Chicago, Southwest or Delta?

Accepted Answer

The two airlines most popular with KAYAK users for flights from Ontario to Chicago are Southwest and Delta. With an average price for the route of $468 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $428 and an overall rating of 7.8.

Question 2

How long does a flight from Ontario to Chicago take?

Accepted Answer

A direct flight to Chicago will take on average 3h 45m to travel the 1,708 miles flying distance from Ontario.

Question 3

How many flights are there between Ontario and Chicago per day?

Accepted Answer

Each day, there are 2 nonstop flights that take off from Ontario and land in Chicago, with an average flight time of 4h 00m. The most common departure time is 11:00 pm and most flights take off in the morning. Each week, there are 14 flights and there are the same amount of flights each day (2).

Question 4

How many flights are there between Ontario and Chicago per day?

Accepted Answer

Each day, there are 2 nonstop flights that take off from Ontario and land in Chicago, with an average flight time of 4h 00m. The most common departure time is 11:00 pm and most flights take off in the morning. Each week, there are 14 flights and there are the same amount of flights each day (2).

Question 5

What is the cheapest flight from Ontario to Chicago?

Accepted Answer

In the last 5 days, the lowest price for a flight from Ontario to Chicago was $72 for a one-way ticket and $262 for a round-trip.

Question 6

Do I need a passport to fly between Ontario and Chicago?

Accepted Answer

No, a passport isn't needed to fly from Ontario to Chicago. However, local authorities might ask for an official ID.

Question 7

What’s the cheapest day of the week to fly from Ontario to Chicago?

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to Chicago on a Saturday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

Question 8

What’s the cheapest day of the week to fly from Ontario to Chicago?

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to Chicago on a Saturday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

Question 9

Which airports will I be using when flying from Ontario to Chicago?

Accepted Answer

On your way to Chicago, you’ll fly out from Ontario. You’ll be landing in one of Chicago’s 2 airports: Chicago Midway or Chicago O'Hare Intl.

Question 10

What’s the earliest departure time from Ontario to Chicago?

Accepted Answer

Early birds can take the earliest flight from Ontario at 7:00 am and will be landing in Chicago at 1:10 pm.

Question 11

What’s the latest departure time from Ontario to Chicago?

Accepted Answer

If you prefer to fly at night, the latest flight from Ontario to Chicago jets off at 11:55 pm and lands at 5:45 am.

Question 12

Which airlines fly non-stop between Ontario and Chicago?

Accepted Answer

There are 3 airlines that fly nonstop from Ontario to Chicago. They are: Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $131 for a round-trip flight. On average, the best prices for this route can be found at Frontier.

Question 13

Which airlines fly non-stop between Ontario and Chicago?

Accepted Answer

There are 3 airlines that fly nonstop from Ontario to Chicago. They are: Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $131 for a round-trip flight. On average, the best prices for this route can be found at Frontier.

Question 14

Which airlines offer Wi-Fi service onboard planes from Ontario to Chicago?

Accepted Answer

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

Question 15

Which aircraft models fly most regularly from Ontario to Chicago?

Accepted Answer

The Boeing 737-900 is the aircraft model that flies most regularly on the Ontario to Chicago flight route.

Question 16

Which airline alliances offer flights from Ontario to Chicago?

Accepted Answer

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

Question 17

On which days can I fly direct from Ontario to Chicago?

Accepted Answer

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

Question 18

Which is the best arrival airport if I want to visit the Museum of Science and Industry?

Accepted Answer

ORD offers the best linkage to The Museum of Science and Industry, which lies approximately 24.2 miles away. Bus line 6 provides the most convenient connection to this attraction, covering the journey in about 1h 18min. For a quicker connection, take a taxi and get there in under 30min.

Question 19

Is there a prayer room at Chicago Midway International Airport (MDW)?

Accepted Answer

Religious souls landing at MDW from ONT and want to thank the Almighty for the safe trip will find a sacred suite where they can retreat quietly and respectfully. You can locate this sanctuary in Concourse C on the mezzanine level, and it’s open 24/7.

Question 20

Are there car rentals from O'Hare International Airport (ORD) to downtown Chicago?

Accepted Answer

There’s a wide range of car rental services at ORD, ideal for anyone keen to explore Chicago in a car. Once you land at the airport, locate your car dealer’s desk in the arrival hall. A free shuttle will drop you at the pick-up point at Routes Car & Truck Rentals at 3901 Mannheim Rd, Schiller Park.

Question 21

Does O'Hare International Airport run an art program?

Accepted Answer

ORD boasts an extensive exhibition of unique pieces of art and crafts throughout its terminals. Consider killing time in concourses B and C and enjoy the various sculptures, murals, and paintings.

Question 22

What is the cheapest month to fly from Ontario to Chicago?

Accepted Answer

The cheapest month for flights from Ontario to Chicago is January, where tickets cost $345 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $482 and $482 respectively.

Question 23

What is the cheapest month to fly from Ontario to Chicago?

Accepted Answer

The cheapest month for flights from Ontario to Chicago is January, where tickets cost $345 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $482 and $482 respectively.

Question 24

How does KAYAK find such low prices on flights from Ontario to Chicago?

Accepted Answer

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 Ontario to Chicago.

Question 25

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago?

Accepted Answer

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

Question 26

What is the Hacker Fare option on flights from Ontario to Chicago?

Accepted Answer

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 Chicago with an airline and back to Ontario with another airline.

Question 27

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chicago?

Accepted Answer

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 Chicago from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 28

What is the cheapest layover airport when flying from Ontario to Chicago?

Accepted Answer

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $261.

Question 29

What is the most popular layover airport when flying from Ontario to Chicago?

Accepted Answer

Phoenix (PHX) is the top choice – 23% of KAYAK users who clicked on 1-stop flights from Ontario to Chicago picked an itinerary connecting there.

Question 30

Which layover airport has the quickest connection when flying from Ontario to Chicago?

Accepted Answer

If you prefer a quick connection, Seattle (SEA) often has the shortest layovers from Ontario to Chicago, with an average of 0h 57m.

Question 31

Which layover airport offers the shortest total travel time from Ontario to Chicago?

Accepted Answer

Consider flying via Phoenix (PHX) for the shortest journey. The average one-way travel time for flights connecting there is 5h 36m.

Question 32

Which cabin class options are there for flights between Ontario and Chicago?

Accepted Answer

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 33

Which cabin class options are there for flights between Ontario and Chicago?

Accepted Answer

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 34

Which airlines provide the cheapest flights from Ontario to Chicago?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from Ontario to Chicago were found on Delta ($262) and Southwest ($264).

Question 35

Which airlines provide the cheapest flights from Ontario to Chicago?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from Ontario to Chicago were found on Delta ($262) and Southwest ($264).

Question 36

What is the cheapest Ontario to Chicago flight route?

Accepted Answer

The cheapest return flight from Ontario to Chicago costs $297 on the route between Ontario (ONT) and Chicago Midway Airport (MDW). Over the past month, this route was, on average, 6% cheaper than other Ontario-Chicago routes. The most popular route is between Ontario (ONT) and Chicago O'Hare Intl Airport (ORD).

Question 37

What is the cheapest Ontario to Chicago flight route?

Accepted Answer

The cheapest return flight from Ontario to Chicago costs $297 on the route between Ontario (ONT) and Chicago Midway Airport (MDW). Over the past month, this route was, on average, 6% cheaper than other Ontario-Chicago routes. The most popular route is between Ontario (ONT) and Chicago O'Hare Intl Airport (ORD).

Question 38

How far in advance should I book a flight from Ontario to Chicago?

Accepted Answer

To get a below average price on the flight from Ontario to Chicago, you should book around 4 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Question 39

How far in advance should I book a flight from Ontario to Chicago?

Accepted Answer

To get a below average price on the flight from Ontario to Chicago, you should book around 4 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Question 40

Can I save money by flying with a layover from Ontario to Chicago?

Accepted Answer

No, with an average price for the route of $401, prices are generally cheapest when you fly direct.

Question 41

Can I save money by flying with a layover from Ontario to Chicago?

Accepted Answer

No, with an average price for the route of $401, prices are generally cheapest when you fly direct.

Question 42

How much is a round-trip flight from Ontario to Chicago?

Accepted Answer

Flight prices are below average for this route right now.Flights to Chicago from Ontario usually cost between $298 and $447 in October.
The lowest price found in the past 5 days was $262 on Delta (Oct 22-Oct 25).

Question 43

What are the most popular airlines flying to Chicago?

Accepted Answer

The most popular airline among KAYAK users flying to Chicago is American Airlines, followed by United Airlines and Frontier.

Low season	January
High season	October
Cheapest flight	$72

ONT - CHI

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Cheap Flights from Ontario to Chicago (ONT-CHI)

Recent round-trip flight deals from Ontario to Chicago

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How much is a round-trip flight from Ontario to Chicago?

What is the cheapest Ontario to Chicago flight route?

What’s the cheapest day of the week to fly from Ontario to Chicago?

What is the cheapest month to fly from Ontario to Chicago?

Can I save money by flying with a layover from Ontario to Chicago?

How far in advance should I book a flight from Ontario to Chicago?

Which airlines provide the cheapest flights from Ontario to Chicago?

Which airlines fly non-stop between Ontario and Chicago?

What is the most popular layover airport when flying from Ontario to Chicago?

What is the cheapest layover airport when flying from Ontario to Chicago?

Which layover airport offers the shortest total travel time from Ontario to Chicago?

Which layover airport has the quickest connection when flying from Ontario to Chicago?

Which cabin class options are there for flights between Ontario and Chicago?

How many flights are there between Ontario and Chicago per day?

How long does a flight from Ontario to Chicago take?

What’s the earliest departure time from Ontario to Chicago?

What’s the latest departure time from Ontario to Chicago?

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