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Cheap flights from O'Hare Intl (ORD) to Ontario (ONT) from $78

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 5/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — ONT
May 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
1 adult, Economy
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The best prices from Chicago O'Hare Intl to Ontario are usually found in April or May, booked 48 days in advance, depart on a Thursday or Saturday and return on a Tuesday

Cheap flight deals from O'Hare Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Ontario (ONT). 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 May 7, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$238

One-way from

$78
High demand for flights, 19% potential price rise
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Best time to find cheap flights, 19% potential price drop
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From Chicago O'Hare Intl to Ontario
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One-way flight from Chicago O'Hare Intl to Ontario
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What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to Ontario?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 70% when planning your travel around this day of the week.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Ontario?

To save on the cost of your flight from Chicago O'Hare Intl Airport to Ontario, book at least 45 days before your planned departure. Booking around this time can save you about 61% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $323 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $459.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Ontario?

Flights from Chicago O'Hare Intl Airport to Ontario lean towards being more expensive in March. Prices are generally better when you fly from Chicago O'Hare Intl Airport to Ontario in September, with the cheapest ticket starting at $64.

When is the cheapest time to fly from Chicago O'Hare Intl Airport to Ontario (ORD - ONT)?

One of the essential ways to save on airfare from Chicago O'Hare Intl Airport to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 34% on airfare.

Cheap Frontier flights from O'Hare Intl to Ontario

Explore cheap flight options specifically provided by Frontier for the route between O'Hare Intl and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Check out some of the cheapest Frontier flights we've come across from Chicago to Ontario. Come back soon if you're not finding the exact deal you're looking for.
Mon 5/207:59 pmORD - ONT
1 stop15h 05mFrontier
Wed 5/222:35 pmONT - ORD
1 stop8h 38mFrontier
Deal found 5/7$129
Mon 5/207:59 pmORD - ONT
1 stop15h 05mFrontier
Sat 5/255:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/6$132
Tue 5/217:59 pmORD - ONT
1 stop15h 05mFrontier
Sat 5/255:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/6$133
Tue 5/1412:29 pmORD - ONT
1 stop9h 18mFrontier
Wed 5/222:35 pmONT - ORD
1 stop8h 38mFrontier
Deal found 5/6$135
Tue 6/47:59 pmORD - ONT
1 stop19h 16mFrontier
Tue 6/117:26 pmONT - ORD
1 stop7h 59mFrontier
Deal found 5/5$138
Sat 6/17:59 pmORD - ONT
1 stop13h 35mFrontier
Wed 6/58:55 pmONT - ORD
1 stop6h 28mFrontier
Deal found 5/6$139
Sat 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
Wed 6/128:03 amONT - ORD
1 stop10h 45mFrontier
Deal found 5/6$140
Sat 6/17:59 pmORD - ONT
1 stop13h 35mFrontier
Tue 6/117:26 pmONT - ORD
1 stop7h 59mFrontier
Deal found 5/6$141
Sat 5/257:59 pmORD - ONT
1 stop13h 30mFrontier
Fri 5/3112:59 amONT - ORD
1 stop21h 19mFrontier
Deal found 5/6$143

Cheap Delta flights from O'Hare Intl to Ontario

Explore cheap flight options specifically provided by Delta for the route between O'Hare Intl and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Some of the best deals we've found on Delta flights traveling from Chicago to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.
Wed 6/57:45 amORD - ONT
1 stop6h 28mDelta
Wed 6/125:00 pmONT - ORD
2 stops12h 32mDelta
Deal found 5/6$241
Fri 5/311:32 pmORD - ONT
2 stops11h 15mDelta
Sat 6/112:50 pmONT - ORD
1 stop9h 08mDelta
Deal found 5/6$284
Fri 5/3111:45 amORD - ONT
2 stops10h 21mDelta
Sat 6/16:00 amONT - ORD
2 stops12h 55mDelta
Deal found 5/6$289
Tue 5/289:36 amORD - ONT
2 stops12h 30mDelta
Fri 5/3110:00 pmONT - ORD
1 stop8h 16mDelta
Deal found 5/6$294
Mon 5/137:30 pmORD - ONT
1 stop6h 13mDelta
Tue 5/2111:20 amONT - ORD
1 stop10h 45mDelta
Deal found 5/6$322
Sun 5/127:30 pmORD - ONT
1 stop6h 13mDelta
Tue 5/146:00 amONT - ORD
2 stops11h 10mDelta
Deal found 5/7$337
Tue 5/147:40 amORD - ONT
1 stop6h 33mDelta
Wed 5/151:20 pmONT - ORD
1 stop6h 37mDelta
Deal found 5/6$395
Thu 5/161:32 pmORD - ONT
2 stops11h 15mDelta
Thu 5/2312:50 pmONT - ORD
1 stop9h 05mDelta
Deal found 5/6$405
Mon 5/137:30 pmORD - ONT
1 stop6h 13mDelta
Wed 5/156:50 amONT - ORD
1 stop10h 51mDelta
Deal found 5/6$412

Cheap O'Hare Intl to Ontario flights in May & June 2024

Find cheap flight options from O'Hare Intl to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,749,864 searches. Prices were last updated on May 7, 2024.
Scroll through some of the best deals on flights from Chicago to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 5/217:59 pmORD - ONT
1 stop15h 05mFrontier
Thu 5/306:11 pmONT - ORD
1 stop8h 49mFrontier
Deal found 5/7$160
Sat 5/257:59 pmORD - ONT
1 stop13h 30mFrontier
Fri 5/318:54 pmONT - ORD
1 stop25h 24mFrontier
Deal found 5/7$161
Tue 5/216:45 pmORD - ONT
1 stop13h 29mFrontier
Sun 5/2612:59 amONT - ORD
1 stop22h 14mFrontier
Deal found 5/6$162
Fri 5/316:45 pmORD - ONT
1 stop14h 54mFrontier
Sun 6/211:30 pmONT - ORD
1 stop27h 30mFrontier
Deal found 5/6$163
Wed 6/58:23 pmORD - ONT
1 stop16h 33mFrontier
Wed 6/128:41 pmONT - ORD
1 stop6h 44mFrontier
Deal found 5/6$164
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Sat 5/185:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/6$165
Thu 5/307:59 pmORD - ONT
1 stop21h 40mFrontier
Sun 6/212:59 amONT - ORD
1 stop22h 14mFrontier
Deal found 5/7$166
Thu 6/68:23 pmORD - ONT
1 stop14h 41mFrontier
Mon 6/1012:59 amONT - ORD
1 stop21h 41mFrontier
Deal found 5/6$167
Wed 6/128:23 pmORD - ONT
1 stop12h 40mFrontier
Thu 6/209:40 pmONT - ORD
1 stop6h 02mFrontier
Deal found 5/6$168

O'Hare Intl to Ontario 2024 flight deals

Discover exclusive flight deals for travel between O'Hare Intl and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Scroll through some of the best deals on flights from Chicago to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 5/217:59 pmORD - ONT
1 stop15h 05mFrontier
Thu 5/306:11 pmONT - ORD
1 stop8h 49mFrontier
Deal found 5/7$160
Sat 5/257:59 pmORD - ONT
1 stop13h 30mFrontier
Fri 5/318:54 pmONT - ORD
1 stop25h 24mFrontier
Deal found 5/7$161
Tue 5/216:45 pmORD - ONT
1 stop13h 29mFrontier
Sun 5/2612:59 amONT - ORD
1 stop22h 14mFrontier
Deal found 5/6$162
Fri 5/316:45 pmORD - ONT
1 stop14h 54mFrontier
Sun 6/211:30 pmONT - ORD
1 stop27h 30mFrontier
Deal found 5/6$163
Wed 6/58:23 pmORD - ONT
1 stop16h 33mFrontier
Wed 6/128:41 pmONT - ORD
1 stop6h 44mFrontier
Deal found 5/6$164
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Sat 5/185:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/6$165
Thu 5/307:59 pmORD - ONT
1 stop21h 40mFrontier
Sun 6/212:59 amONT - ORD
1 stop22h 14mFrontier
Deal found 5/7$166
Thu 6/68:23 pmORD - ONT
1 stop14h 41mFrontier
Mon 6/1012:59 amONT - ORD
1 stop21h 41mFrontier
Deal found 5/6$167
Sun 8/258:00 amORD - ONT
1 stop6h 15mFrontier
Mon 9/212:49 amONT - ORD
1 stop17h 32mFrontier
Deal found 5/6$168

O'Hare Intl to Ontario flights leaving soon

Find last-minute flight options from O'Hare Intl to Ontario 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 2,749,864 searches. Data last updated May 7, 2024.
Check out these flights departing soon from Chicago to Ontario. Tip: verify your flight details before completing your reservation.
Tue 5/1412:29 pmORD - ONT
1 stop9h 18mFrontier
Wed 5/222:35 pmONT - ORD
1 stop8h 38mFrontier
Deal found 5/6$135
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Mon 5/2012:59 amONT - ORD
1 stop18h 16mFrontier
Deal found 5/6$145
Tue 5/1412:29 pmORD - ONT
1 stop9h 18mFrontier
Sat 5/255:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/7$146
Tue 5/146:27 pmORD - ONT
1 stop13h 59mFrontier
Mon 5/2012:59 amONT - ORD
1 stop18h 16mFrontier
Deal found 5/6$148
Fri 5/178:05 pmORD - ONT
1 stop14h 59mFrontier
Wed 5/222:35 pmONT - ORD
1 stop8h 38mFrontier
Deal found 5/6$152
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Wed 5/222:35 pmONT - ORD
1 stop8h 38mFrontier
Deal found 5/5$154
Tue 5/146:27 pmORD - ONT
1 stop7h 32mFrontier
Fri 5/2412:59 amONT - ORD
1 stop21h 19mFrontier
Deal found 5/7$156
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Sat 5/255:41 pmONT - ORD
1 stop9h 19mFrontier
Deal found 5/6$158
Tue 5/1412:29 pmORD - ONT
1 stop9h 18mFrontier
Sat 6/87:15 pmONT - ORD
1 stop8h 22mFrontier
Deal found 5/6$159

One-way flights to Ontario from O'Hare Intl

Search for one-way flight options from O'Hare Intl to Ontario. 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 2,749,864 searches. Data last updated May 7, 2024.
Some of the best available deals we've found on one-way flights from Chicago to Ontario. Users needing a return flight from Chicago to Ontario should utilize the search form above.
Fri 5/316:45 pmORD - ONT
1 stop7h 14mFrontier
Deal found 5/7$78
Tue 5/1412:29 pmORD - ONT
1 stop9h 18mFrontier
Deal found 5/7$79
Tue 6/116:00 amORD - ONT
1 stop19h 59mFrontier
Deal found 5/6$80
Fri 5/316:45 pmORD - ONT
1 stop7h 14mFrontier
Deal found 5/6$86
Tue 5/287:59 pmORD - ONT
1 stop22h 06mFrontier
Deal found 5/7$88
Wed 5/296:45 pmORD - ONT
1 stop7h 14mFrontier
Deal found 5/6$89
Mon 5/136:27 pmORD - ONT
1 stop13h 59mFrontier
Deal found 5/7$92
Mon 6/36:45 pmORD - ONT
1 stop7h 14mFrontier
Deal found 5/6$93
Sun 6/27:59 pmORD - ONT
1 stop15h 35mFrontier
Deal found 5/6$94

Find flights from O'Hare Intl to Ontario within your budget

Customize your flight search to find flights from O'Hare Intl to Ontario 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 2,749,864 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$129 - $241

Route

Depart

Return

Price

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Mon 5/20

1 stop15h 05m

Ontario

Wed 5/22

1 stop8h 38m

$129

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Mon 5/20

1 stop15h 05m

Ontario

Sat 5/25

1 stop9h 19m

$132

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 5/21

1 stop15h 05m

Ontario

Sat 5/25

1 stop9h 19m

$133

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 6/4

1 stop19h 16m

Ontario

Tue 6/11

1 stop7h 59m

$138

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 6/1

1 stop13h 35m

Ontario

Wed 6/5

1 stop6h 28m

$139

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 6/8

1 stop12h 28m

Ontario

Wed 6/12

1 stop10h 45m

$140

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 6/1

1 stop13h 35m

Ontario

Tue 6/11

1 stop7h 59m

$141

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 5/25

1 stop13h 30m

Ontario

Fri 5/31

1 stop21h 19m

$143

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 6/5

1 stop6h 28m

Ontario

Wed 6/12

2 stops12h 32m

$241

Flights are sorted by cheapest first

Deals found on 5/7

When is the best time to book a flight from Chicago O'Hare Intl Airport to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Ontario. Price data was last updated on May 3, 2024.
The price you pay for your flight from Chicago O'Hare Intl Airport to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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When is the cheapest time to fly from Chicago O'Hare Intl Airport to Ontario?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Ontario. Price data was last updated on May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Ontario flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Ontario by month

Plan your trip from O'Hare Intl to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight from O'Hare Intl to Ontario is currently $87 while a round-trip flight costs $148. Price data was last updated on April 28, 2024.

Currently, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Ontario (average of $237). Flying from Chicago O'Hare Intl Airport to Ontario in June is currently the most expensive (average of $337). 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.

January

$268

February

$287

March

$281

April

$256

May

$268

June

$337

July

$337

August

$287

September

$258

October

$237

November

$267

December

$272

Temperature and rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average temperature and rainfall totals by month.

LAX

Temperature

57.2 - 73.4 °F

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated May 7, 2024.
Peruse reviews from past customers who have flown with Frontier, Delta and Alaska Airlines from Chicago to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,082 reviews
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,147 reviews
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,810 reviews
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

United Airlines
7.4
Good
11,073 reviews
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

American Airlines
7.3
Good
14,686 reviews
Southwest
8.2
Very good
6,082 reviews
Check prices

Crew

8.7

Food

7.3

Entertainment

7.8

Overall

8.2

Boarding

8.3

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Ontario. 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 into for flights to Ontario from Chicago O'Hare Intl?

    Ontario (ONT) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to Ontario. You should not have trouble finding flights to Ontario from Chicago O'Hare Intl; the airport handles an average of 0 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 5 airlines have flights to the Ontario airport from Chicago O'Hare Intl. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

  • Can I find flights from Chicago O'Hare Intl Airport to Ontario for under $200 on Cheapflights?

    Yes, there are multiple flights from Chicago O'Hare Intl Airport to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $129, but on average you can expect to pay $144.

  • Are there last-minute flights available from Chicago O'Hare Intl Airport to Ontario for under $200?

    There are currently 20+ open flights from Chicago O'Hare Intl Airport to Ontario within the next 7 days for less than $200.

  • What is the cheapest airline to fly from Chicago O'Hare Intl Airport to Ontario round-trip?

    Our cheapest airline available from Chicago O'Hare Intl Airport to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $129 on this airline. Frontier is 66% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular airlines that fly from Chicago O'Hare Intl Airport to Ontario?

    Before booking your flight from Chicago O'Hare Intl Airport to Ontario check out the most popular airlines for this route: American Airlines, Delta or Frontier.

  • What does ORD to ONT mean?

    Great question - ORD to ONT just means Chicago O'Hare Intl Airport to Ontario Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from O'Hare Intl to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your O'Hare Intl to Ontario 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.

  • Can I find deals on flights from O'Hare Intl to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter O'Hare Intl to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from O'Hare Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Ontario.

  • Can I find deals for business class flights from O'Hare Intl to Ontario?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from O'Hare Intl to Ontario that allow pets onboard?

    Many airlines flying from O'Hare Intl to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from O'Hare Intl to Ontario?

    Yes, you can often find last-minute deals on O'Hare Intl to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Chicago O'Hare Intl Airport to Ontario flight deals updated?

    The Chicago O'Hare Intl Airport to Ontario flight deals you see on this page were last updated on 5/7.

See more FAQs

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Alternative routes for O'Hare Intl to Ontario
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from O'Hare Intl to Ontario

Discover the top 5 airlines that operate flights from O'Hare Intl to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$126Average$249FlexibilityNo cancel feeOn-time65%
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FrontierCheapest$137Average$218FlexibilityNo cancel feeOn-time62%
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DeltaCheapest$288Average$352FlexibilityNo cancel feeOn-timeN/A
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United AirlinesCheapest$311Average$454FlexibilityNo cancel feeOn-time69%
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American AirlinesCheapest$311Average$388FlexibilityNo cancel feeOn-time71%
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Search flights from O'Hare Intl to Ontario by cabin class

Find flights from O'Hare Intl to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from O'Hare Intl to Ontario

Find hourly flight availability from O'Hare Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2024.
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
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Fly with Cheapflights

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How does Cheapflights help users find flights from O'Hare Intl to Ontario?

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Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Ontario?

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Can Cheapflights find flights from O'Hare Intl to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from O'Hare Intl to Ontario become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from O'Hare Intl today and book when prices fit your budget.

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