Cheap Flight Tickets from Ontario (ONT) to Chicago (ORD), Starting at $284

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

$284

F9 Frontier Airlines • 1 stop • 20h 57m

Aug 07 – Aug 15

The cheapest round trip flight from Ontario to Chicago (ONT-ORD-ONT) is currently $284

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Cheapest One way Flight

$615

AS Alaska Airlines • 1 stop • 26h 46m

Jun 23

The cheapest one way flight from Ontario to Chicago (ONT-ORD) is currently $615

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Fastest Flight

10h 57m

The fastest nonstop flight from Ontario to Chicago (ONT-ORD) takes 10h 57m

Top Airlines Flying from Ontario to Chicago

Delta Airline, DL

Delta Airlines

Alaska Airlines -AS

Alaska Airlines

American Airlines, AA

American 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.

Aug 07 - Aug 15, Economy
F9
Ontario → Chicago
20h 57m
9:36 AM - 12:33 AM • 1 stop
F9
Ontario → Chicago
23h 27m
9:57 PM - 10:04 AM • 1 stop
$284
Frontier Airlines
Aug 07 - Aug 15, Economy
F9
Ontario → Chicago
18h 23m
4:34 PM - 5:37 AM • 1 stop
F9
Ontario → Chicago
15h 59m
7:15 AM - 3:14 PM • 1 stop
$284
Frontier Airlines
Aug 07 - Aug 15, Economy
DL
Ontario → Chicago
15h 40m
10:00 PM - 9:40 AM • 1 stop
DL
Ontario → Chicago
7h 2m
9:30 AM - 11:52 AM • nonstop
$376
Delta Airlines
Aug 07 - Aug 15, Economy
DL
Ontario → Chicago
15h 40m
10:00 PM - 9:40 AM • 1 stop
DL
Ontario → Chicago
10h 57m
5:18 PM - 10:15 PM • 1 stop
$381
Delta Airlines
Aug 07 - Aug 15, Economy
AS
Ontario → Chicago
14h 2m
6:02 AM - 4:44 PM • 1 stop
AS
Ontario → Chicago
17h 3m
8:02 AM - 4:25 PM • 1 stop
$461
Alaska Airlines
Aug 07 - Aug 15, Economy
AS
Ontario → Chicago
15h 36m
6:02 AM - 5:38 PM • 1 stop
AS
Ontario → Chicago
17h 3m
8:02 AM - 4:25 PM • 1 stop
$461
Alaska 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?
NO
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 6:00 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 709
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 10:00 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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