Cheap Flight Tickets from Ontario (ONT) to Chicago (ORD), Starting at $158

Good to Know: Cheapest and Fastest ONT - ORD Flights

Useful information for finding best airline tickets from Ontario International to Chicago O'Hare International on your next trip.

Cheapest Round Trip Flight

$373

DL Delta Airlines • 1 stop • 16h 44m

Oct 12 – Oct 14

The cheapest round trip flight from Ontario to Chicago (ONT-ORD-ONT) is currently $373

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Cheapest One way Flight

$158

DL Delta Airlines • 1 stop • 16h 43m

Sep 27

The cheapest one way flight from Ontario to Chicago (ONT-ORD) is currently $158

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Cheapest Direct Flight

$262

UA United Airlines • nonstop • 6h 50m

Oct 17

The cheapest nonstop flight from Ontario to Chicago (ONT-ORD) is currently $262

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Fastest Flight

6h 50m

The fastest nonstop flight from Ontario to Chicago (ONT-ORD) takes 6h 50m

Top Airlines Flying from Ontario to Chicago

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Ontario (ONT) to Chicago (ORD)

Compare and book low fare round-trip air tickets from Ontario to Chicago. Ideal for travelers with confirmed return itineraries.

Oct 12 - Oct 14, Economy
DL
Ontario → Chicago
16h 44m
7:07 AM - 7:11 PM • 1 stop
DL
Ontario → Chicago
7h 11m
2:45 PM - 5:16 PM • nonstop
$373
Delta Airlines
Oct 12 - Oct 14, Economy
DL
Ontario → Chicago
12h 31m
7:07 AM - 4:58 PM • 1 stop
DL
Ontario → Chicago
7h 15m
7:20 AM - 9:55 AM • nonstop
$373
Delta Airlines
Oct 12 - Oct 14, Economy
DL
Ontario → Chicago
12h 31m
7:07 AM - 4:58 PM • 1 stop
DL
Ontario → Chicago
12h 19m
5:27 AM - 11:06 AM • 1 stop
$378
Delta Airlines
Oct 12 - Oct 14, Economy
DL
Ontario → Chicago
13h 30m
11:15 PM - 9:25 AM • 1 stop
DL
Ontario → Chicago
12h 19m
5:27 AM - 11:06 AM • 1 stop
$378
Delta Airlines
Oct 14 - Oct 14, Economy
DL
Ontario → Chicago
13h 53m
6:20 AM - 4:53 PM • 1 stop
DL
Ontario → Chicago
7h 26m
6:59 PM - 9:45 PM • nonstop
$726
Delta Airlines
Oct 14 - Oct 14, Economy
UA
Ontario → Chicago
10h 15m
5:00 AM - 1:15 PM • 1 stop
DL
Ontario → Chicago
7h 26m
6:59 PM - 9:45 PM • nonstop
$810
United Airlines

Fly from Ontario to Chicago with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Ontario to Chicago? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Ontario to Chicago Flights

What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to ORD?
The most popular airline flying from Ontario to Chicago are
Can I fly from ONT to ORD non-stop?
Yes, you can fly ONT to ORD non-stop on
Which airlines fly nonstop between Ontario and Chicago?
The non-stop flights between Ontario and Chicago are .
What’s the earliest departure time from ONT to ORD Airport?
The earliest flight leaves ONT at 5:00 am and lands in ORD - Chicago O'Hare International
What are the airports in Chicago?
MDW,ORD
Can I make changes to my Ontario to Chicago flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to ORD?
Read the fare rules of the Ontario to Chicago air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Chicago?
operate flights between Ontario and Chicago
How long does a flight from Ontario to Chicago take?
It takes approximately 4 hour to fly non-stop from ONT to ORD, which is 1699.87 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Chicago (ORD) ?
In the past couple of days, the cheapest tickets to ORD from ONT were found on DL : USD 869
Do I need a passport to fly between ONT and ORD?
No
What’s the latest departure time from ONT to ORD ?
The last flight leaves ONT at 11:15 pm

Ontario (ONT) to Chicago (ORD): Airport Information

Origin Airport Ontario International , Ontario, US
Destination Airport Chicago O'Hare International , Chicago, US
Distance 1700 miles

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