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$65+ Cheap flights from Cleveland to Ontario (CLE - ONT)

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
CLE — ONT
Dec 14 — Dec 211
Sun 12/14
Sun 12/21
1 adult, Economy
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Cheapflights Tip: The best prices from Cleveland Hopkins Intl to Ontario are usually found in August or January, booked 32 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Cleveland to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Cleveland (CLE) 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 November 14, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$123
(Kiwi.com)

One-way from

$65
(CheapOair)

Popular in

October

Cheapest in

August

Average price

$366
Provider with most accurate pricing for Cleveland Hopkins Intl-Ontario flight deals.
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Provider most trusted by Cheapflights users for Cleveland Hopkins Intl-Ontario flights.
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From Cleveland Hopkins Intl to Ontario
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One-way flight from Cleveland Hopkins Intl to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Cleveland to Ontario

Cheapest flights from Cleveland to Ontario
Explore the most affordable flight options available from Cleveland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:30 pmCLE - ONT
1 stop26h 45mFrontier
Sat 12/276:00 amONT - CLE
1 stop12h 57mFrontier
Deal found 11/12$123
This CheapOair deal was found by Cheapflights users on 11/13. 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.
Tue 12/98:15 amCLE - ONT
1 stop16h 02mFrontier
Sat 12/133:20 pmONT - CLE
1 stop16h 47mFrontier
Deal found 11/13$130
This CheapOair deal was found by Cheapflights users on 11/12. 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.
Fri 12/128:50 amCLE - ONT
1 stop11h 44mFrontier
Mon 12/153:20 pmONT - CLE
1 stop16h 47mFrontier
Deal found 11/12$134
This Frontier deal was found by Cheapflights users on 11/12. 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.
Wed 11/268:00 amCLE - ONT
1 stop12h 36mFrontier
Sat 12/66:15 amONT - CLE
1 stop9h 19mFrontier
Deal found 11/12$137
This CheapOair deal was found by Cheapflights users on 11/13. 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.
Thu 12/48:20 pmCLE - ONT
1 stop21h 05mFrontier
Mon 12/85:18 pmONT - CLE
1 stop22h 16mFrontier
Deal found 11/13$138
This Trip.com deal was found by Cheapflights users on 11/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:15 amCLE - ONT
1 stop8h 49mFrontier
Sun 1/46:00 amONT - CLE
1 stop21h 10mFrontier
Deal found 11/12$140
This CheapOair deal was found by Cheapflights users on 11/13. 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.
Fri 12/128:50 amCLE - ONT
1 stop11h 44mFrontier
Thu 12/186:17 pmONT - CLE
1 stop9h 43mFrontier
Deal found 11/13$141
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:40 amCLE - ONT
1 stop12h 35mFrontier
Sat 12/275:16 pmONT - CLE
1 stop10h 14mFrontier
Deal found 11/12$142
This Frontier deal was found by Cheapflights users on 11/12. 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.
Wed 12/243:12 pmCLE - ONT
1 stop11h 47mFrontier
Wed 12/316:00 pmONT - CLE
1 stop9h 40mFrontier
Deal found 11/12$144
This CheapOair deal was found by Cheapflights users on 11/12. 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.
Mon 12/158:15 amCLE - ONT
1 stop8h 49mFrontier
Fri 12/196:00 amONT - CLE
1 stop21h 40mFrontier
Deal found 11/12$145

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cleveland 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 2,558,603 searches. Data last updated November 14, 2025.
Use the filters below to find and compare flights from Cleveland to Ontario that are best for you.

Fly from

Cleveland

Fly to

Ontario

Route

Depart

Return

Price

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 12/2

7:45 am-9:17 pm

1 stop16h 32m

Ontario

Sat 12/6

3:20 pm-11:07 am

1 stop16h 47m

$137

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 12/16

8:15 am-9:17 pm

1 stop16h 02m

Ontario

Tue 12/30

6:00 am-6:45 am

1 stop21h 45m

$137

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Sat 1/3

6:00 pm-11:21 pm

1 stop8h 21m

Ontario

Thu 1/8

10:18 pm-2:10 pm

1 stop12h 52m

$145

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Thu 11/20

7:55 pm-11:57 pm

1 stop7h 02m

Ontario

Wed 11/26

12:58 am-11:07 am

1 stop7h 09m

$183

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Mon 12/22

7:40 am-5:15 pm

1 stop12h 35m

Ontario

Mon 1/5

6:45 am-10:54 pm

1 stop13h 09m

$203

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 12/2

7:45 am-9:17 pm

1 stop16h 32m

Ontario

Fri 12/12

6:15 am-6:34 pm

1 stop9h 19m

$262

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Fri 12/19

5:13 pm-11:59 pm

1 stop9h 46m

Ontario

Sun 12/21

6:37 pm-6:10 am

1 stop8h 33m

$263

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Sun 12/21

5:30 pm-9:27 pm

1 stop6h 57m

Ontario

Fri 1/2

6:45 am-4:08 pm

1 stop6h 23m

$290

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Sat 1/17

4:48 pm-3:39 pm

1 stop25h 51m

Ontario

Mon 1/19

10:29 pm-11:38 pm

1 stop22h 09m

$292

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Wed 12/24

3:12 pm-11:59 pm

1 stop11h 47m

Ontario

Fri 1/2

6:45 am-4:08 pm

1 stop6h 23m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 20 results
1
2

Compare providers for flights from Cleveland to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cleveland to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Cleveland-Ontario flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Cleveland-Ontario flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Cleveland-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cleveland-Ontario flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cleveland-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cleveland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Cleveland 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.

Cheapflights Insights

Everything you need to know about your flight from Cleveland to Ontario

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

Use this chart to determine the optimal time to book a round-trip flight from Cleveland to Ontario. Price data was last updated on November 7, 2025.

The best time to book flights from Cleveland to Ontario is 32 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.

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

Currently, February is the cheapest month in which you can book a flight from Cleveland to Ontario (average of $104). Flying from Cleveland to Ontario in June is currently the most expensive (average of $159). 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 CLE to ONT?

Find hourly flight availability from Cleveland 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 November 14, 2025.

One of the essential ways to save on airfare from Cleveland to Ontario is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Cleveland to Ontario. Price data was last updated on December 16, 2024.

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

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 November 14, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Cleveland to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,007 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,017 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,051 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,109 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • How long is the flight from Cleveland to Ontario?

    A quick flight from Cleveland to Ontario can take about 16h 32m. Frontier provides one of the quickest options available for as low as $137. Cleveland and Ontario are separated by a distance of 2002 mi.

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

    Currently priced at $146, Frontier will fly you from Cleveland to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $279 and $286, respectively. Users have found that Frontier is 58% cheaper than the other options available to this destination.

  • Can I find deals for flights from Cleveland to Ontario that include hotel bookings?

    Yes. In addition to deals on Cleveland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Cleveland to Ontario?

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

  • Can I find deals for business class flights from Cleveland to Ontario?

    Yes. Cheapflights offers flight deals from Cleveland 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.

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

    Currently, February is the cheapest month in which you can book a flight from Cleveland to Ontario (average of $104). Flying from Cleveland to Ontario in June is currently the most expensive (average of $159). 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.

See more FAQs

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Top 5 airlines flying from Cleveland to Ontario

Discover the top 5 airlines that operate flights from Cleveland 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 2,558,603 searches. Data last updated November 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$146Average$260FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$279Average$462FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$286Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$393FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$324Average$424FlexibilityNo cancel feeOn-time69%

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