Cheap flights from Ontario to Chicago from $119

Round-trip
1 adult
Economy
From?
To?
Sat 7/2
Sat 7/9

Deals available from 900+ travel sites.

Flight information for Ontario to Chicago
(ONT to CHI)

Find info about flight duration, direct flights, and airports for your flight from Ontario to Chicago

Best Price Found

$119

Fastest flight time

1h 24m

Direct flights

None

Airports in Chicago

3 airports
The best one-way flight to Chicago from Ontario in the past 72 hours is $119. The best round-trip flight deal from Ontario to Chicago found on momondo in the last 72 hours is $246.
The fastest flight from Ontario to Chicago takes 1h 24m
There are no direct flights from Ontario to Chicago. Popular non-direct routes for this connection are Ontario Airport - Chicago Greater Rockford Airport, Ontario Airport - Chicago O'Hare Intl Airport and Ontario Airport - Chicago Midway Airport.
There are 3 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Chicago Greater Rockford (RFD)

How to get the cheapest flight ticket from Ontario to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

September

The cheapest time of year to fly to Chicago from Ontario is September. Most expensive is March

What is the cheapest day to depart Ontario for Chicago?

Thursday

The cheapest day of the week is typically Thursday. The most expensive is typically Monday

When is the cheapest time to fly from Ontario to Chicago?

in the evening

Ontario to Chicago flights are approximately 36% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to Chicago from Ontario?

Juneyao Airlines

American Airlines, Frontier, and Juneyao Airlines are the most popular carriers operating from Ontario to Chicago

What is the cheapest Ontario to Chicago flight route?

Ontario - Chicago Midway

Fly from Ontario to Chicago Midway for the best Ontario - Chicago flight prices

How far in advance should you book Ontario to Chicago flights?

25 days before

The cheapest time to buy a flight from Ontario to Chicago is approximately 25 days to departure

When traveling from Ontario to Chicago, the most popular airport to fly into is Chicago O'Hare Intl Airport. The majority of travelers flying into Chicago O'Hare Intl Airport from Ontario are departing from Ontario Airport. If you are looking for alternate airports to fly out of when traveling to Chicago, you can try flying out of Los Angeles Airport (in Los Angeles), Burbank Bob Hope Airport (in Burbank), or Santa Ana J. Wayne/Orange Cnty Airport (in Santa Ana). When traveling from Ontario, it is helpful to have an alternative airport to fly into when you land in Chicago. Good options for arrival airports in Chicago, you can try Chicago Midway Airport (in Chicago) or Chicago Greater Rockford Airport (in Chicago). The least expensive flight option from Ontario to Chicago will typically be LAX — ORD during the month of June with an average price of $122 RT.

Los Angeles Airport (LAX) to Chicago O'Hare Intl Airport (ORD)$122
Search Flight Deals
Los Angeles Airport (LAX) to Chicago Midway Airport (MDW)$293
Search Flight Deals
Burbank Bob Hope Airport (BUR) to Chicago O'Hare Intl Airport (ORD)$231
Search Flight Deals
Santa Ana J. Wayne/Orange Cnty Airport (SNA) to Chicago O'Hare Intl Airport (ORD)$182
Search Flight Deals
Ontario Airport (ONT) to Chicago O'Hare Intl Airport (ORD)$290
Search Flight Deals
Ontario Airport (ONT) to Chicago Midway Airport (MDW)$243
Search Flight Deals

Easily compare round-trip flights from Ontario to Chicago

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to Chicago by changing tabs
Frontier
Aug 20
ONT8:00 amOntario
3h 56m
MDW11:56 amChicago Midway
Aug 24
MDW3:32 amChicago Midway
4h 02m
ONT7:34 amOntario
Multiple Airlines
Aug 27
ONT2:43 pmOntario
8h 57m
1 stop
ORD11:40 pmChicago O'Hare Intl
Aug 30
ORD5:38 pmChicago O'Hare Intl
11h 27m
1 stop
ONT5:05 amOntario
Alaska Airlines
Nov 1
ONT11:25 amOntario
12h 20m
1 stop
ORD11:45 pmChicago O'Hare Intl
Nov 4
ORD3:40 pmChicago O'Hare Intl
15h 55m
1 stop
ONT7:35 amOntario
Delta
Oct 22
ONT7:00 amOntario
8h 21m
1 stop
ORD3:21 pmChicago O'Hare Intl
Oct 26
ORD10:07 amChicago O'Hare Intl
11h 37m
2 stops
ONT9:44 pmOntario
Frontier
Aug 16
ONT8:00 amOntario
3h 56m
MDW11:56 amChicago Midway
Aug 24
MDW3:32 amChicago Midway
4h 02m
ONT7:34 amOntario
Frontier
Aug 27
ONT2:43 pmOntario
8h 34m
1 stop
MDW11:17 pmChicago Midway
Aug 30
MDW2:41 pmChicago Midway
14h 24m
1 stop
ONT5:05 amOntario

Find the cheapest one-way flights from Ontario to Chicago

If you're looking for one-way flights from Ontario to Chicago, view some of our deals below provided by Alaska Airlines and Frontier
Frontier
Aug 17
ONT2:28 pmOntario
8h 49m
1 stop
MDW11:17 pmChicago Midway
Multiple Airlines
Sep 11
ONT6:37 amOntario
16h 28m
1 stop
ORD11:05 pmChicago O'Hare Intl
Alaska Airlines
Nov 9
ONT10:25 amOntario
12h 20m
1 stop
ORD10:45 pmChicago O'Hare Intl

Search last-minute flights to Chicago from Ontario

Find and compare round-trip flight prices for your last-minute flight from Ontario to Chicago
Multiple Airlines
Jul 2
ONT6:27 pmOntario
23h 31m
1 stop
ORD5:58 pmChicago O'Hare Intl
Jul 7
ORD5:29 pmChicago O'Hare Intl
11h 39m
1 stop
ONT5:08 amOntario
Frontier
Jul 7
ONT9:04 amOntario
14h 58m
1 stop
MDW12:02 amChicago Midway
Aug 15
MDW3:32 amChicago Midway
4h 02m
ONT7:34 amOntario
United Airlines
Jul 6
ONT1:39 amOntario
7h 16m
1 stop
ORD8:55 amChicago O'Hare Intl
Jul 12
ORD11:59 amChicago O'Hare Intl
7h 12m
1 stop
ONT7:11 pmOntario
American Airlines
Jul 4
ONT12:48 pmOntario
5h 26m
1 stop
ORD6:14 pmChicago O'Hare Intl
Jul 16
ORD6:04 amChicago O'Hare Intl
7h 59m
1 stop
ONT2:03 pmOntario
Multiple Airlines
Jul 7
ONT9:04 amOntario
7h 33m
1 stop
ORD4:37 pmChicago O'Hare Intl
Aug 15
ORD5:38 pmChicago O'Hare Intl
15h 01m
1 stop
ONT8:39 amOntario
Delta
Jul 2
ONT8:43 amOntario
8h 03m
1 stop
MDW4:46 pmChicago Midway
Jul 6
MDW2:00 amChicago Midway
7h 34m
1 stop
ONT9:34 amOntario

Best airlines flying from Ontario to Chicago

Compare and see reviews for airlines that fly from Ontario to Chicago with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $12Free CancellationRating
0.0
Search Juneyao Airlines flights
FrontierPriceFrom $66Free CancellationRating
6.2
6.4

Boarding

5.8

Comfort

7.0

Crew

4.7

Entertainment

5.0

Food

Reviews

Likes: price Dislikes: Courteousness, Integrity, Safety (gate agent gave my seat away then blamed me, the security door was closed. She stated that I checked in too late although I had a boarding pass and lied that there were no more seats. Fortunately, an older gate agent was present and took action to print a ticket for me and they reopened the security door. Then they rushed me to get my stuff as I tried to meet the demand. It is clear to me that was indeed happened is that they already calculated the weight as there were additional seats. The problem was resolved and I had an enjoyable flight, but not without unneeded stress.).

1 / 10
Search Frontier flights
Spirit AirlinesPriceFrom $109Free CancellationRating
6.2
6.4

Boarding

5.9

Comfort

7.0

Crew

4.9

Entertainment

5.1

Food

Reviews

Unexpected charges, bad seats, bad employes, horrible flight.

1 / 10
Search Spirit Airlines flights
American AirlinesPriceFrom $137Free CancellationRating
7.0
7.4

Boarding

7.1

Comfort

8.0

Crew

6.8

Entertainment

6.4

Food

Reviews

So this review is related to some things related more to the airports and higher-level stuff. One issue was that this was the second leg of an international flight for me. It was an American Airlines codeshare with Finnair. American Airlines had alerted Finnair about some additional security measures but did not mention the fact that any liquids purchased at the Duty Free stores en route would NOT be allowed through security at Chicago when transferring to the domestic terminal. Passengers did have the option of placing those liquids in their checked baggage but what if that wasn't an option? Another issue is just related to ORD, it was a zoo. I know that's beyond what this review is about but big airlines like American have some part to play in how the airport operates.

1 / 10
Search American Airlines flights
DeltaPriceFrom $147Free CancellationRating
7.8
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

This is another disease as if you have the Internet, you are ordinary deceivers!

1 / 10
Search Delta flights
United AirlinesPriceFrom $229Free CancellationRating
7.2
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.5

Food

Reviews

A very long way to the connecting flight and no update on the delays were frustrating! It was messy at Frankfurt Airport. Thank God for the masks, we couldn't smell each other after all the running and rushing around.

1 / 10
Search United Airlines flights
  • Southwest Flights From Ontario to Chicago

    Southwest flight deals from Ontario to Chicago start from $418 round-trip. Over the 13 Southwest flights for this route in a normal week, average airfare is usually $499 round-trip - but some users have found much cheaper deals with momondo.


Delta flights from Ontario to Chicago

Our best Delta deals on Ontario to Chicago flight tickets
Delta
Oct 22
ONT7:00 amOntario
8h 21m
1 stop
ORD3:21 pmChicago O'Hare Intl
Oct 26
ORD10:07 amChicago O'Hare Intl
11h 37m
2 stops
ONT9:44 pmOntario
Delta
Jul 2
ONT8:43 amOntario
8h 03m
1 stop
MDW4:46 pmChicago Midway
Jul 6
MDW2:00 amChicago Midway
7h 34m
1 stop
ONT9:34 amOntario
Delta
Jul 2
ONT8:43 amOntario
8h 03m
1 stop
MDW4:46 pmChicago Midway
Jul 6
MDW2:00 amChicago Midway
12h 05m
2 stops
ONT2:05 pmOntario

United Airlines flights from Ontario to Chicago

Our best United Airlines deals on Ontario to Chicago flight tickets
United Airlines
Jul 6
ONT1:39 amOntario
7h 16m
1 stop
ORD8:55 amChicago O'Hare Intl
Jul 12
ORD11:59 amChicago O'Hare Intl
7h 12m
1 stop
ONT7:11 pmOntario
United Airlines
Jul 2
ONT7:57 pmOntario
7h 29m
1 stop
ORD3:26 amChicago O'Hare Intl
Jul 6
ORD10:28 amChicago O'Hare Intl
8h 12m
1 stop
ONT6:40 pmOntario

  • Are airlines flying from Ontario to Chicago offering flexible cancellation due to COVID-19?

    Due to the global impact of COVID-19, some of our airline partners operating flights from Ontario to Chicago, such as Frontier, American Airlines, and United Airlines may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.

  • How far is Ontario to Chicago by plane?

    The straight-line distance from Ontario to Chicago is 1710.7 mi. 3h 56m is a normal flight duration for this route.



Alternative routes for Ontario to Chicago

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to Chicago Flights
Fastest flight time3h 54m
Cheapest price$122
San Francisco to Chicago Flights
Fastest flight time4h 06m
Cheapest price$253
Santa Ana to Chicago Flights
Fastest flight time3h 55m
Cheapest price$182
Burbank to Chicago Flights
Fastest flight time7h 13m
Cheapest price$231
San Diego to Chicago Flights
Fastest flight time3h 58m
Cheapest price$125
San Jose to Chicago Flights
Fastest flight time4h 14m
Cheapest price$286
Oakland, California to Chicago Flights
Fastest flight time6h 53m
Cheapest price$161
Los Angeles to St. Louis Flights
Fastest flight time3h 26m
Cheapest price$210
Sacramento to Chicago Flights
Fastest flight time3h 53m
Cheapest price$233
Long Beach to Chicago Flights
Fastest flight time5h 26m
Cheapest price$296
San Francisco to St. Louis Flights
Fastest flight time5h 26m
Cheapest price$180
Santa Ana to St. Louis Flights
Fastest flight time5h 22m
Cheapest price$183

Similar Ontario to Chicago flights

Flexible with your destination? Broaden your search and find flights similar to your Ontario to Chicago route

Why use momondo?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Chicago. momondo saves you time and could save you money on your trip.

Yes. All flights to Chicago from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

Once you have performed a search for Ontario to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

Of course. momondo tracks the price of Ontario to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


Here's why travelers choose to use momondo
Flexible Travel
momondo understands the need for flexibility and we have a filter specifically for flights with no change fees.
Expert Insights
Data driven insights designed to help you find a great flight deal. From the cheapest time to depart to how far in advance to book.
Price Alerts
Track the price of your preferred flight route and be notified when it changes.