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$52+ Cheap flights from Ontario (ONT) to Chicago (CHI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CHI
oct. 15 — oct. 221
From?
To?
mar. 10/15
mar. 10/22
1 adult, Economy
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Find cheap flights from Ontario to Chicago with Cheapflights

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The best prices from Ontario to Chicago are usually found in October or November, booked 25 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Ontario to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated octubre 10, 2024.

Popular in

January

Cheapest in

October

Round-trip from

$103
(Mytrip)

One-way from

$52
(Mytrip)
High demand for flights, 17% potential price rise
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Best time to find cheap flights, 20% potential price drop
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From Ontario to Chicago (CHI)
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One-way flight from Ontario to Chicago (CHI)
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Cheap Ontario to Chicago flights in October & November 2024

Find cheap flight options from Ontario to Chicago specifically for the months of October and November 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,713,696 searches. Prices were last updated on octubre 10, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
This Mytrip deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/265:45 amONT - ORD
1 stop7h 44mFrontier
sáb. 11/24:44 pmORD - ONT
1 stop9h 14mFrontier
Deal found 10/10$103
This Mytrip deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/126:30 amONT - MDW
1 stop7h 20mFrontier
sáb. 11/163:04 pmMDW - ONT
1 stop10h 00mFrontier
Deal found 10/9$105
This Travelocity deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/27:00 amONT - ORD
2 stops14h 59mMultiple Airlines
sáb. 11/94:40 pmORD - ONT
1 stop9h 24mMultiple Airlines
Deal found 10/10$222
This Alaska Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/97:00 amONT - ORD
2 stops14h 59mAlaska Airlines
vie. 11/155:54 pmORD - ONT
1 stop28h 09mAlaska Airlines
Deal found 10/10$227
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/296:00 amONT - ORD
1 stop5h 33mDelta
mar. 11/56:20 amORD - ONT
1 stop9h 37mDelta
Deal found 10/9$230
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/1611:53 amONT - MDW
1 stop7h 53mDelta
lun. 11/181:30 pmMDW - ONT
2 stops12h 23mDelta
Deal found 10/9$251
This Southwest deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/296:15 amONT - MDW
Nonstop3h 50mSouthwest
mar. 11/56:05 amMDW - ONT
1 stop6h 50mSouthwest
Deal found 10/8$319
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/316:45 amONT - ORD
2 stops8h 15mSouthwest
dom. 11/37:30 amORD - ONT
1 stop9h 35mSouthwest
Deal found 10/10$386

Ontario to Chicago 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Chicago in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,713,696 searches. Data last updated octubre 10, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
This Mytrip deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/265:45 amONT - ORD
1 stop7h 44mFrontier
sáb. 11/24:44 pmORD - ONT
1 stop9h 14mFrontier
Deal found 10/10$103
This Mytrip deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/126:30 amONT - MDW
1 stop7h 20mFrontier
sáb. 11/163:04 pmMDW - ONT
1 stop10h 00mFrontier
Deal found 10/9$105
This Kissandfly.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/96:00 amONT - ORD
1 stop6h 00mMultiple Airlines
mar. 12/107:00 amORD - ONT
1 stop7h 58mMultiple Airlines
Deal found 10/10$194
This Alaska Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/97:00 amONT - ORD
2 stops14h 59mAlaska Airlines
vie. 11/155:54 pmORD - ONT
1 stop28h 09mAlaska Airlines
Deal found 10/10$227
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/296:00 amONT - ORD
1 stop5h 33mDelta
mar. 11/56:20 amORD - ONT
1 stop9h 37mDelta
Deal found 10/9$230
This Delta deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/1611:53 amONT - MDW
1 stop7h 53mDelta
mié. 11/201:30 pmMDW - ONT
2 stops11h 31mDelta
Deal found 10/10$251
This Southwest deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/296:15 amONT - MDW
Nonstop3h 50mSouthwest
mar. 11/56:05 amMDW - ONT
1 stop6h 50mSouthwest
Deal found 10/8$319
This United Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/301:57 pmONT - ORD
1 stop9h 14mUnited Airlines
vie. 1/312:45 pmORD - ONT
1 stop6h 41mUnited Airlines
Deal found 10/10$332
This American Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/2011:59 pmONT - ORD
1 stop6h 26mAmerican Airlines
lun. 12/306:35 pmORD - ONT
1 stop7h 22mAmerican Airlines
Deal found 10/10$346

Ontario to Chicago flights leaving soon

Find last-minute flight options from Ontario to Chicago for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,713,696 searches. Data last updated octubre 10, 2024.
Have a look at some of the last-minute flights available departing from Ontario to Chicago. To prevent any unwanted surprises, users should verify their flight info before booking.
This Mytrip deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/178:33 pmONT - ORD
1 stop27h 54mFrontier
mar. 10/294:44 pmORD - ONT
1 stop18h 59mFrontier
Deal found 10/9$119
This CheapOair deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/168:00 pmONT - MDW
1 stop14h 29mFrontier
mié. 10/239:10 pmMDW - ONT
1 stop12h 15mFrontier
Deal found 10/9$166
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/1610:00 pmONT - ORD
1 stop8h 17mDelta
mié. 10/231:55 pmORD - ONT
2 stops10h 59mDelta
Deal found 10/9$387
This Orbitz deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/178:27 pmONT - ORD
2 stops18h 20mMultiple Airlines
mar. 10/294:44 pmORD - ONT
1 stop9h 14mMultiple Airlines
Deal found 10/9$437
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/1611:38 amONT - MDW
1 stop8h 00mDelta
mié. 10/231:12 pmMDW - ONT
2 stops11h 42mDelta
Deal found 10/9$487
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/1712:05 pmONT - ORD
2 stops8h 30mSouthwest
mar. 10/297:15 amORD - ONT
2 stops12h 05mSouthwest
Deal found 10/9$518
This Southwest deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/205:20 amONT - MDW
1 stop5h 25mSouthwest
sáb. 10/2612:05 pmMDW - ONT
2 stops9h 50mSouthwest
Deal found 10/8$578
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/177:18 amONT - ORD
2 stops13h 45mUnited Airlines
sáb. 10/261:15 pmORD - ONT
2 stops11h 41mUnited Airlines
Deal found 10/9$619
This Alaska Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/188:27 pmONT - ORD
1 stop13h 42mAlaska Airlines
lun. 10/217:00 amORD - ONT
2 stops18h 58mAlaska Airlines
Deal found 10/9$631

One-way flights to Chicago from Ontario

Search for one-way flight options from Ontario to Chicago. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,713,696 searches. Data last updated octubre 10, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Chicago. Users in need of a round-trip flight from Ontario to Chicago instead should update the search form at the top of page.
This Mytrip deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/305:45 amONT - MDW
1 stop8h 05mFrontier
Deal found 10/9$52
This Frontier deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/242:40 pmONT - ORD
1 stop7h 30mFrontier
Deal found 10/10$54
This Delta deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/1011:18 amONT - ORD
1 stop10h 41mDelta
Deal found 10/10$112
This Delta deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/125:25 pmONT - MDW
2 stops13h 25mDelta
Deal found 10/10$117
This Alaska Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/146:00 amONT - ORD
1 stop30h 03mAlaska Airlines
Deal found 10/10$117
This United Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/315:15 amONT - ORD
1 stop7h 40mUnited Airlines
Deal found 10/10$148
This American Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/311:59 pmONT - ORD
1 stop8h 49mAmerican Airlines
Deal found 10/10$149
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1411:25 amONT - ORD
2 stops9h 10mSouthwest
Deal found 10/10$154
This Southwest deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/296:15 amONT - MDW
Nonstop3h 50mSouthwest
Deal found 10/8$160

Find flights from Ontario to Chicago within your budget

Customize your flight search to find flights from Ontario to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,713,696 searches. Data last updated octubre 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$103 - $346

Route

Depart

Return

Price

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

sáb. 10/26

1 stop7h 44m

Chicago O'Hare Intl

sáb. 11/2

1 stop9h 14m

$103

OntarioChicago Midway

ONT - MDW

ONTMDW

Ontario

mar. 11/12

1 stop7h 20m

Chicago Midway

sáb. 11/16

1 stop10h 00m

$105

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

lun. 12/9

1 stop6h 00m

Chicago O'Hare Intl

mar. 12/10

1 stop7h 58m

$194

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

sáb. 11/9

2 stops14h 59m

Chicago O'Hare Intl

vie. 11/15

1 stop28h 09m

$227

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

mar. 10/29

1 stop5h 33m

Chicago O'Hare Intl

mar. 11/5

1 stop9h 37m

$230

OntarioChicago Midway

ONT - MDW

ONTMDW

Ontario

sáb. 11/16

1 stop7h 53m

Chicago Midway

lun. 11/18

2 stops12h 23m

$251

OntarioChicago Midway

ONT - MDW

ONTMDW

Ontario

mar. 10/29

Nonstop3h 50m

Chicago Midway

mar. 11/5

1 stop6h 50m

$319

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

lun. 12/30

1 stop9h 14m

Chicago O'Hare Intl

vie. 1/3

1 stop6h 41m

$332

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

vie. 12/20

1 stop6h 26m

Chicago O'Hare Intl

lun. 12/30

1 stop7h 22m

$346

Flights are sorted by cheapest first

Deals found on 10/10

Best time to book a flight from Ontario to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Chicago

Get recent, data-driven insights about flights from Ontario to Chicago including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Chicago. Price data was last updated on October 4, 2024.

The best time to book flights from Ontario to Chicago is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Find deals

What is the cheapest month to book a flight from Ontario to Chicago?

Currently, September is the cheapest month in which you can book a flight from Ontario to Chicago (average of $232). Flying from Ontario to Chicago in June is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to CHI?

Find hourly flight availability from Ontario to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 10, 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Ontario to Chicago by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Chicago. Price data was last updated on October 6, 2024.

Travelers seeking maximum savings on their Ontario to Chicago flight should consider departing on Saturday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated octubre 10, 2024.
To help decide which airline to fly from Ontario to Chicago, see what other customers have to say about Frontier, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.2
Very good
5,203 reviews
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,392 reviews
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,963 reviews
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,366 reviews
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.3
Good
10,000 reviews
Southwest
8.2
Very good
5,203 reviews

Overall

8.2

Crew

8.7

Boarding

8.3

Entertainment

7.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Chicago?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Chicago. You should not have trouble finding flights to Chicago from Ontario; the airport handles an average of 1 outbound flight to Chicago per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ontario airport to Chicago. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • Can I find flights from Ontario to Chicago for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Chicago for under $200. The cheapest flight booked recently is on Frontier for just $103, but on average you can expect to pay $234.

  • Are there nonstop flights from Ontario to Chicago for under $800 on Cheapflights?

    Cheapflights has at least 1 direct flight from Ontario to Chicago under $800. A good price for a nonstop flight from Ontario to Chicago is less than $729.

  • Are there last-minute flights available from Ontario to Chicago for under $200?

    There are currently 9+ open flights from Ontario to Chicago within the next 7 days for less than $200.

  • What are the cheapest airlines flying from Ontario to Chicago round-trip?

    Cheapflights users have booked flights from Ontario to Chicago round-trip from $103. Other airlines that can offer you cheap pricing are Alaska Airlines, from $227, and Delta, from $230. These flights start at 66% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Chicago one-way?

    The cheapest airlines for a one-way flight from Ontario to Chicago are Frontier ($52), Delta ($112), and Alaska Airlines ($117).

  • What are the most popular routes from Ontario to Chicago?

    Most travelers choose Ontario - Chicago O'Hare Intl, Ontario - Chicago Midway or Ontario - Chicago Greater Rockford when deciding on the best route from Ontario to Chicago.

  • What does ONT to ORD mean?

    ONT and ORD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to ORD refers to a flight route from Ontario Airport to Chicago O'Hare Intl Airport. Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Ontario to Chicago that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Chicago flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.