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$104+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
CLE — ONT
mai 17 — mai 241
sam. 5/17
sam. 5/24
1 adult, Economy
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Cheapflights Tip: The best prices from Cleveland Hopkins Intl to Ontario are usually found in June or May, booked 45 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 mai 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$208
(Cheapflightsfares)

One-way from

$104
(Cheapflightsfares)

Popular in

November

Cheapest in

June

Average price

$298
Provider with most accurate pricing for Cleveland Hopkins Intl-Ontario flight deals.
Search Deals
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
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in May 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 mai 12, 2025.

This Frontier deal was found by Cheapflights users on 5/12. 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.
sam. 5/179:56 pmCLE - ONT
1 stop12h 28mFrontier
lun. 5/1912:59 amONT - CLE
1 stop7h 04mFrontier
Deal found 5/12$200
This Delta deal was found by Cheapflights users on 5/11. 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.
sam. 7/125:30 amCLE - ONT
2 stops9h 44mDelta
mer. 7/161:15 pmONT - CLE
1 stop6h 34mDelta
Deal found 5/11$350
This American Airlines deal was found by Cheapflights users on 5/11. 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.
dim. 6/17:15 amCLE - ONT
1 stop7h 35mAmerican Airlines
ven. 6/612:59 amONT - CLE
1 stop7h 01mAmerican Airlines
Deal found 5/11$384
This Southwest deal was found by Cheapflights users on 5/10. 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.
jeu. 10/95:20 amCLE - ONT
2 stops9h 20mSouthwest
lun. 10/139:00 amONT - CLE
1 stop11h 15mSouthwest
Deal found 5/10$438
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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.
mer. 11/56:20 pmCLE - ONT
1 stop26h 57mAlaska Airlines
mer. 11/126:00 pmONT - CLE
2 stops20h 15mAlaska Airlines
Deal found 5/10$448
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 6/87:27 amCLE - ONT
1 stop7h 47mUnited Airlines
dim. 6/86:41 pmONT - CLE
1 stop9h 16mUnited Airlines
Deal found 5/12$523

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 mai 12, 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

dim. 6/1

4:44 pm-12:20 pm

1 stop22h 36m

Ontario

sam. 6/7

5:21 pm-11:05 am

1 stop14h 44m

$211

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

sam. 7/12

5:30 am-12:14 pm

2 stops9h 44m

Ontario

mer. 7/16

1:15 pm-10:49 pm

1 stop6h 34m

$350

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

sam. 6/14

7:00 pm-11:50 pm

1 stop7h 50m

Ontario

mer. 6/18

7:00 am-11:55 am

2 stops25h 55m

$351

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

dim. 6/1

7:15 am-11:50 am

1 stop7h 35m

Ontario

ven. 6/6

12:59 am-11:00 am

1 stop7h 01m

$384

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

jeu. 10/9

5:20 am-11:40 am

2 stops9h 20m

Ontario

lun. 10/13

9:00 am-11:15 pm

1 stop11h 15m

$438

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

mer. 11/5

6:20 pm-6:17 pm

1 stop26h 57m

Ontario

mer. 11/12

6:00 pm-5:15 pm

2 stops20h 15m

$448

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

sam. 10/25

3:10 pm-9:56 pm

1 stop9h 46m

Ontario

sam. 11/29

7:00 am-11:33 pm

1 stop13h 33m

$583

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

jeu. 5/29

7:59 pm-11:51 pm

1 stop6h 52m

$104

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

mer. 6/4

5:30 am-11:50 am

2 stops9h 20m

$177

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

mar. 8/12

5:24 am-2:46 pm

2 stops12h 22m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 13 results
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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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars

*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 May 9, 2025.

The best time to book flights from Cleveland to Ontario is 45 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, August is the cheapest month in which you can book a flight from Cleveland to Ontario (average of $246). Flying from Cleveland to Ontario in March 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.

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 mai 12, 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 20% 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 mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 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 mai 12, 2025.
To help decide which airline to fly from Cleveland to Ontario, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Currently priced at $208, 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 Delta and American Airlines - these airlines can fly you to your destination from $350 and $384, respectively. Users have found that Frontier is 39% cheaper than the other options available to this destination.

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

    $104 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 Alaska Airlines, with prices starting from $177 and $227, respectively.

  • 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, August is the cheapest month in which you can book a flight from Cleveland to Ontario (average of $246). Flying from Cleveland to Ontario in March 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.

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 mai 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$167Average$264FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$308Average$363FlexibilityNo cancel feeOn-time71%
DeltaCheapest$311Average$372FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$324Average$424FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$344Average$474FlexibilityNo cancel feeOn-time63%

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