Cheap flights from Ontario to Chicago from $61

1 adult
Economy
0 bags
From?
To?
Tue 9/26
Tue 10/3

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

$61

Fastest flight time

3h 40m

Direct flights

Every day

Airports in Chicago

2 airports
The best one-way flight to Chicago from Ontario in the past 72 hours is $61. The best round-trip flight deal from Ontario to Chicago found on momondo in the last 72 hours is $120.
The fastest flight from Ontario to Chicago takes 3h 40m
Direct flights go from Ontario to Chicago every day.
There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

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?

October. The cheapest time of year to fly to Chicago from Ontario is October. Most expensive is July

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 afternoon. Ontario to Chicago flights are approximately 30% more expensive in the morning than in the afternoon

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

Spirit Airlines. American Airlines, Delta, and Frontier are the most popular carriers operating from Ontario to Chicago

What is the cheapest Ontario to Chicago flight route?

Ontario - Chicago O'Hare Intl. Fly from Ontario to Chicago O'Hare Intl for the best Ontario - Chicago flight prices

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

28 days before. The cheapest time to buy a flight from Ontario to Chicago is approximately 28 days to departure

How many flights depart from Ontario to Chicago on average per day?

As of September 2023, 1 flights take off from Ontario and land in Chicago each day. The most common flight departure time for this route is 6:00AM, with 81% of daily flights taking off at noon.

How many flights depart from Ontario to Chicago on average per week?

The number of flights available between Ontario and Chicago is 13 per week as of September 2023. The most frequent departure day is Monday, with 15% of weekly flights leaving on this day.

Can stopping save me money on Ontario to Chicago flights?

You could potentially save up to 19% on your flight if you consider stops on a Ontario to Chicago flight.

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 September with an average price of $96 RT.

Los Angeles Airport (LAX) to Chicago O'Hare Intl Airport (ORD)$96
Search Flight Deals
Burbank Bob Hope Airport (BUR) to Chicago O'Hare Intl Airport (ORD)$111
Search Flight Deals
Santa Ana J. Wayne/Orange Cnty Airport (SNA) to Chicago O'Hare Intl Airport (ORD)$106
Search Flight Deals
Ontario Airport (ONT) to Chicago O'Hare Intl Airport (ORD)$125
Search Flight Deals
Los Angeles Airport (LAX) to Chicago Midway Airport (MDW)$113
Search Flight Deals
Ontario Airport (ONT) to Chicago Midway Airport (MDW)$128
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 six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to Chicago by changing tabs
Frontier
Oct 31
ONT2:45 pmOntario
13h 00m
1 stop
MDW2:45 amChicago Midway
Nov 7
MDW12:45 amChicago Midway
14h 15m
1 stop
ONT3:00 pmOntario
Multiple Airlines
Oct 31
ONT12:44 pmOntario
14h 30m
1 stop
ORD2:14 amChicago O'Hare Intl
Nov 4
ORD11:30 amChicago O'Hare Intl
7h 58m
1 stop
ONT7:28 pmOntario
Frontier
Oct 28
ONT11:22 amOntario
7h 32m
1 stop
MDW5:54 pmChicago Midway
Nov 7
MDW12:45 amChicago Midway
14h 10m
1 stop
ONT2:55 pmOntario
Frontier
Nov 1
ONT3:15 pmOntario
13h 14m
1 stop
MDW3:29 amChicago Midway
Nov 4
MDW1:45 amChicago Midway
20h 59m
1 stop
ONT10:44 pmOntario
Delta
Oct 24
ONT9:30 amOntario
6h 39m
1 stop
ORD3:09 pmChicago O'Hare Intl
Oct 31
ORD2:15 amChicago O'Hare Intl
9h 52m
1 stop
ONT12:07 pmOntario
Alaska Airlines
Oct 31
ONT2:00 amOntario
8h 58m
1 stop
ORD9:58 amChicago O'Hare Intl
Oct 31
ORD3:30 pmChicago O'Hare Intl
25h 30m
1 stop
ONT5:00 pmOntario

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, Frontier and United Airlines
Frontier
Oct 14
ONT7:29 amOntario
7h 49m
1 stop
MDW2:18 pmChicago Midway
Multiple Airlines
Oct 3
ONT1:23 pmOntario
11h 12m
1 stop
ORD11:35 pmChicago O'Hare Intl
Alaska Airlines
Oct 28
ONT2:00 amOntario
10h 18m
1 stop
ORD11:18 amChicago 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
Frontier
Sep 27
ONT1:15 amOntario
12h 30m
1 stop
MDW12:45 pmChicago Midway
Oct 1
MDW1:30 amChicago Midway
8h 37m
1 stop
ONT10:07 amOntario
Multiple Airlines
Sep 26
ONT4:31 pmOntario
8h 04m
1 stop
ORD11:35 pmChicago O'Hare Intl
Sep 27
ORD7:47 pmChicago O'Hare Intl
9h 21m
1 stop
ONT5:08 amOntario
Frontier
Sep 28
ONT11:34 amOntario
7h 30m
1 stop
MDW6:04 pmChicago Midway
Oct 1
MDW6:41 pmChicago Midway
11h 12m
1 stop
ONT5:53 amOntario
Frontier
Sep 29
ONT1:23 pmOntario
21h 57m
1 stop
MDW10:20 amChicago Midway
Oct 1
MDW6:41 pmChicago Midway
11h 12m
1 stop
ONT5:53 amOntario
Frontier
Sep 27
ONT8:51 amOntario
9h 35m
1 stop
MDW5:26 pmChicago Midway
Oct 31
MDW11:25 amChicago Midway
10h 05m
1 stop
ONT9:30 pmOntario
Frontier
Sep 29
ONT1:23 pmOntario
21h 57m
1 stop
MDW10:20 amChicago Midway
Oct 8
MDW4:43 amChicago Midway
11h 18m
1 stop
ONT4:01 pmOntario

Best airlines flying from Ontario to Chicago

Compare and see reviews for airlines that fly from Ontario to Chicago with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $105Free CancellationRating
6.0
2,808 reviews
Search Spirit Airlines flights
FrontierPriceFrom $129Free CancellationRating
5.8
1,041 reviews
Search Frontier flights
United AirlinesPriceFrom $168Free CancellationRating
7.2
2,711 reviews
Search United Airlines flights
DeltaPriceFrom $294Free CancellationRating
7.8
1,565 reviews
Search Delta flights
American AirlinesPriceFrom $331Free CancellationRating
7.1
2,884 reviews
Search American Airlines flights

Delta flights from Ontario to Chicago

Our best Delta deals on Ontario to Chicago flight tickets
Delta
Oct 24
ONT9:30 amOntario
6h 39m
1 stop
ORD3:09 pmChicago O'Hare Intl
Oct 31
ORD2:15 amChicago O'Hare Intl
9h 52m
1 stop
ONT12:07 pmOntario
Delta
Oct 17
ONT7:20 amOntario
10h 39m
1 stop
ORD4:59 pmChicago O'Hare Intl
Oct 24
ORD4:41 amChicago O'Hare Intl
11h 28m
2 stops
ONT4:09 pmOntario
Delta
Nov 29
ONT6:20 amOntario
10h 35m
1 stop
ORD3:55 pmChicago O'Hare Intl
Dec 3
ORD5:30 amChicago O'Hare Intl
13h 40m
2 stops
ONT7:10 pmOntario

JetBlue flights from Ontario to Chicago

Our best JetBlue deals on Ontario to Chicago flight tickets
JetBlue
Oct 31
ONT7:39 pmOntario
9h 35m
1 stop
ORD4:14 amChicago O'Hare Intl
Nov 7
ORD7:20 amChicago O'Hare Intl
12h 07m
1 stop
ONT7:27 pmOntario
JetBlue
Nov 4
ONT7:39 pmOntario
10h 35m
1 stop
ORD4:14 amChicago O'Hare Intl
Nov 7
ORD7:20 amChicago O'Hare Intl
12h 07m
1 stop
ONT7:27 pmOntario

  • How far is Ontario to Chicago by plane?

    The straight-line distance from Ontario to Chicago is 1710.7 mi. 3h 55m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Chicago?

    Prices for flights from Ontario Airport to Chicago were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Chicago?

  • How old do you have to be to fly from Ontario Airport to Chicago?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.


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 time4h 02m
Cheapest price$97
Burbank to Chicago Flights
Fastest flight time7h 10m
Cheapest price$111
Oakland, California to Chicago Flights
Fastest flight time7h 24m
Cheapest price$87
Santa Ana to Chicago Flights
Fastest flight time3h 55m
Cheapest price$102
San Francisco to Chicago Flights
Fastest flight time4h 09m
Cheapest price$65
San Jose to Chicago Flights
Fastest flight time4h 08m
Cheapest price$112
San Diego to Chicago Flights
Fastest flight time6h 21m
Cheapest price$97
Sacramento to Chicago Flights
Fastest flight time4h 02m
Cheapest price$124
Los Angeles to St. Louis Flights
Fastest flight time3h 31m
Cheapest price$134
Ontario to St. Louis Flights
Fastest flight time4h 57m
Cheapest price$117
Long Beach to Chicago Flights
Fastest flight time6h 26m
Cheapest price$242
San Francisco to St. Louis Flights
Fastest flight time5h 18m
Cheapest price$128

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?

Why should I use momondo to find a flight deal from Ontario to Chicago?

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.

Can I find flights from Ontario to Chicago with flexible booking policies on momondo?

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

How can momondo help me find flights from Ontario to Chicago?

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.

I’m not ready to book a flight from Ontario to Chicago right now. Can momondo alert me if prices change?

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.


An easier way to manage your Chicago trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.