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Cheap flights from O'Hare Intl (ORD) to Ontario (ONT) from $70

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 8/27. 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
jun. 4 — jun. 111
From?
To?
mar. 6/4
mar. 6/11
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 Saturday or Friday 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 mayo 30, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$238

One-way from

$100
High demand for flights, 19% potential price rise
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Best time to find cheap flights, 20% 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 Friday is a good option for securing a great price. You can expect to save up to 65% 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 39 days before your planned departure. Booking around this time can save you about 60% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $318 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $449.

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.

What is the cheapest time of day to fly from ORD to 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 33% on airfare.

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 2,784,634 searches. Data last updated mayo 30, 2024.
Check out some of the cheapest Delta flights we've come across from Chicago to Ontario. Come back soon if you're not finding the exact deal you're looking for.
sáb. 6/81:25 pmORD - ONT
2 stops11h 35mDelta
mar. 6/1111:40 amONT - ORD
1 stop10h 18mDelta
Deal found 5/29$241
mar. 6/47:30 pmORD - ONT
1 stop6h 13mDelta
mié. 6/56:42 pmONT - ORD
2 stops11h 57mDelta
Deal found 5/28$284
jue. 7/412:00 pmORD - ONT
1 stop9h 44mDelta
mié. 7/1011:49 amONT - ORD
1 stop10h 07mDelta
Deal found 5/29$287
jue. 6/68:45 amORD - ONT
2 stops13h 21mDelta
mar. 6/1110:00 pmONT - ORD
1 stop8h 04mDelta
Deal found 5/28$327
mar. 6/46:07 amORD - ONT
2 stops8h 06mDelta
mié. 6/56:42 pmONT - ORD
2 stops11h 57mDelta
Deal found 5/28$332
sáb. 6/87:20 pmORD - ONT
1 stop6h 22mDelta
sáb. 6/151:25 pmONT - ORD
1 stop6h 17mDelta
Deal found 5/30$347
sáb. 6/87:20 pmORD - ONT
1 stop6h 22mDelta
sáb. 6/1510:00 pmONT - ORD
2 stops9h 21mDelta
Deal found 5/29$352
sáb. 6/87:20 pmORD - ONT
1 stop6h 22mDelta
sáb. 6/155:00 pmONT - ORD
2 stops13h 27mDelta
Deal found 5/29$386
sáb. 6/84:00 pmORD - ONT
2 stops9h 42mDelta
sáb. 6/151:25 pmONT - ORD
1 stop6h 17mDelta
Deal found 5/30$395

Cheap United Airlines flights from O'Hare Intl to Ontario

Explore cheap flight options specifically provided by United Airlines 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 2,784,634 searches. Data last updated mayo 30, 2024.
Some of the best deals we've found on United Airlines flights traveling from Chicago to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.
mié. 6/266:05 amORD - ONT
1 stop8h 40mUnited Airlines
mié. 7/31:30 pmONT - ORD
1 stop8h 29mUnited Airlines
Deal found 5/28$298
mar. 6/42:30 pmORD - ONT
1 stop9h 57mUnited Airlines
mar. 8/61:47 pmONT - ORD
2 stops8h 12mUnited Airlines
Deal found 5/30$417
mié. 6/57:10 amORD - ONT
1 stop7h 35mUnited Airlines
mié. 6/56:25 pmONT - ORD
1 stop15h 10mUnited Airlines
Deal found 5/29$475
sáb. 6/84:15 pmORD - ONT
1 stop6h 23mUnited Airlines
vie. 7/51:30 pmONT - ORD
1 stop5h 35mUnited Airlines
Deal found 5/30$997

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 2,784,634 searches. Prices were last updated on mayo 30, 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.
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
jue. 6/139:40 pmONT - ORD
1 stop6h 02mFrontier
Deal found 5/29$139
jue. 6/68:23 pmORD - ONT
1 stop14h 41mFrontier
mié. 6/1212:49 amONT - ORD
1 stop21h 51mFrontier
Deal found 5/29$140
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
vie. 6/1412:44 amONT - ORD
1 stop18h 22mFrontier
Deal found 5/30$141
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
jue. 6/136:48 pmONT - ORD
1 stop8h 54mFrontier
Deal found 5/29$142
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
mié. 6/128:41 pmONT - ORD
1 stop6h 44mFrontier
Deal found 5/30$143
lun. 6/108:23 pmORD - ONT
1 stop18h 31mFrontier
mié. 6/1212:49 amONT - ORD
1 stop21h 51mFrontier
Deal found 5/29$144
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
lun. 6/1012:59 amONT - ORD
1 stop21h 41mFrontier
Deal found 5/29$145
lun. 6/109:43 pmORD - ONT
1 stop11h 44mFrontier
mar. 6/115:26 pmONT - ORD
1 stop9h 59mFrontier
Deal found 5/29$150
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
mar. 6/187:26 pmONT - ORD
1 stop7h 59mFrontier
Deal found 5/29$167

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 2,784,634 searches. Data last updated mayo 30, 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.
mar. 9/177:30 pmORD - ONT
1 stop15h 36mFrontier
sáb. 9/281:10 pmONT - ORD
1 stop13h 37mFrontier
Deal found 5/30$136
mar. 9/37:30 pmORD - ONT
1 stop15h 36mFrontier
lun. 9/912:49 amONT - ORD
1 stop17h 32mFrontier
Deal found 5/29$137
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
jue. 6/139:40 pmONT - ORD
1 stop6h 02mFrontier
Deal found 5/29$139
jue. 6/68:23 pmORD - ONT
1 stop14h 41mFrontier
mié. 6/1212:49 amONT - ORD
1 stop21h 51mFrontier
Deal found 5/29$140
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
vie. 6/1412:44 amONT - ORD
1 stop18h 22mFrontier
Deal found 5/30$141
lun. 8/196:48 pmORD - ONT
1 stop19h 44mFrontier
jue. 8/221:10 pmONT - ORD
1 stop13h 37mFrontier
Deal found 5/28$142
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
mié. 6/128:41 pmONT - ORD
1 stop6h 44mFrontier
Deal found 5/30$143
lun. 6/108:23 pmORD - ONT
1 stop18h 31mFrontier
mié. 6/1212:49 amONT - ORD
1 stop21h 51mFrontier
Deal found 5/29$144
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
lun. 6/1012:59 amONT - ORD
1 stop21h 41mFrontier
Deal found 5/29$145

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 2,784,634 searches. Data last updated mayo 30, 2024.
Check out these flights departing soon from Chicago to Ontario. Tip: verify your flight details before completing your reservation.
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
jue. 6/139:40 pmONT - ORD
1 stop6h 02mFrontier
Deal found 5/29$139
jue. 6/68:23 pmORD - ONT
1 stop14h 41mFrontier
mié. 6/1212:49 amONT - ORD
1 stop21h 51mFrontier
Deal found 5/29$140
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
vie. 6/1412:44 amONT - ORD
1 stop18h 22mFrontier
Deal found 5/30$141
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
jue. 6/136:48 pmONT - ORD
1 stop8h 54mFrontier
Deal found 5/29$142
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
mié. 6/128:41 pmONT - ORD
1 stop6h 44mFrontier
Deal found 5/30$143
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
mar. 6/1110:31 pmONT - ORD
1 stop28h 54mFrontier
Deal found 5/29$144
sáb. 6/88:35 pmORD - ONT
1 stop12h 28mFrontier
lun. 6/1012:59 amONT - ORD
1 stop21h 41mFrontier
Deal found 5/29$145
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
mar. 6/187:26 pmONT - ORD
1 stop7h 59mFrontier
Deal found 5/29$167
mié. 6/59:53 pmORD - ONT
1 stop15h 06mFrontier
mar. 6/187:26 pmONT - ORD
1 stop7h 59mFrontier
Deal found 5/29$168

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 2,784,634 searches. Data last updated mayo 30, 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.
mar. 8/278:00 amORD - ONT
1 stop6h 32mFrontier
Deal found 5/30$70
jue. 6/66:00 amORD - ONT
1 stop6h 59mFrontier
Deal found 5/29$74
lun. 6/109:43 pmORD - ONT
1 stop11h 44mFrontier
Deal found 5/30$76
mar. 6/118:23 pmORD - ONT
1 stop23h 25mFrontier
Deal found 5/29$77
mar. 8/138:00 amORD - ONT
1 stop6h 32mFrontier
Deal found 5/29$78
mar. 9/37:30 pmORD - ONT
1 stop19h 52mFrontier
Deal found 5/29$80
mié. 6/129:53 pmORD - ONT
1 stop15h 06mFrontier
Deal found 5/29$81
jue. 6/138:23 pmORD - ONT
1 stop18h 56mFrontier
Deal found 5/29$82
sáb. 7/205:10 amORD - ONT
1 stop5h 24mAmerican Airlines
Deal found 5/29$99

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 2,784,634 searches. Data last updated mayo 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$137 - $298

Route

Depart

Return

Price

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mar. 9/3

1 stop17h 39m

Ontario

mar. 9/10

1 stop9h 17m

$137

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 8/22

1 stop17h 39m

Ontario

mar. 8/27

1 stop9h 17m

$139

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

lun. 6/10

1 stop11h 44m

Ontario

jue. 6/13

1 stop8h 54m

$140

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mar. 6/11

1 stop19h 59m

Ontario

vie. 6/14

1 stop18h 22m

$142

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

lun. 8/19

1 stop19h 44m

Ontario

mar. 8/20

1 stop22h 14m

$143

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

lun. 6/10

1 stop18h 31m

Ontario

mié. 6/12

1 stop21h 51m

$144

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mié. 8/14

1 stop13h 38m

Ontario

mié. 8/21

1 stop14h 17m

$146

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 7/4

1 stop9h 44m

Ontario

mié. 7/10

1 stop10h 07m

$287

Chicago O'Hare IntlOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mié. 6/26

1 stop8h 40m

Ontario

mié. 7/3

1 stop8h 29m

$298

Flights are sorted by cheapest first

Deals found on 5/29

How far ahead should I 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 24, 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.
Search Deals

What is the cheapest day 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 26, 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.
Search Deals

Best time to book a flight from O'Hare Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from O'Hare Intl 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.

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 mayo 30, 2024.
Peruse reviews from past customers who have flown with Delta, United Airlines and Frontier 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
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,956 reviews
Southwest
8.2
Very good
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,201 reviews
Southwest
8.2
Very good
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,457 reviews
Southwest
8.2
Very good
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,777 reviews
Southwest
8.2
Very good
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
14,284 reviews
Southwest
8.2
Very good
5,956 reviews
Check prices

Entertainment

7.8

Boarding

8.3

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

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 $137, but on average you can expect to pay $157.

  • 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 $137 on this airline. Frontier is 64% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Ontario one-way?

    $70 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $99 and $123, respectively.

  • 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 5/30.

  • 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 is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Ontario?

    Currently, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Ontario (average of $238). Flying from Chicago O'Hare Intl Airport to Ontario in July is currently the most expensive (average of $328). 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.

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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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Midway to Mexicali flights

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 2,784,634 searches. Data last updated mayo 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$126Average$249FlexibilityNo cancel feeOn-time65%
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FrontierCheapest$139Average$215FlexibilityNo cancel feeOn-time62%
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DeltaCheapest$288Average$355FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest$311Average$388FlexibilityNo cancel feeOn-time71%
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United AirlinesCheapest$312Average$489FlexibilityNo cancel feeOn-time69%
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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 mayo 30, 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

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from O'Hare Intl today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from O'Hare Intl to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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