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$85+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
CLE — ONT
Oct 30 — Nov 61
Thu 10/30
Thu 11/6
1 adult, Economy
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Cheapflights Tip: The best prices from Cleveland Hopkins Intl to Ontario are usually found in August or February, 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 September 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(Mytrip)

One-way from

$85
(Cheapflightsfares)

Popular in

April

Cheapest in

August

Average price

$333
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
Search Deals
One-way flight from Cleveland Hopkins Intl to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 30, 2025.

This Mytrip deal was found by Cheapflights users on 9/29. 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.
Mon 10/209:59 pmCLE - ONT
1 stop28h 51mFrontier
Mon 10/276:53 amONT - CLE
1 stop16h 06mFrontier
Deal found 9/29$160
This Booking.com deal was found by Cheapflights users on 9/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:00 amCLE - ONT
1 stop20h 50mFrontier
Sun 11/166:53 amONT - CLE
1 stop13h 58mFrontier
Deal found 9/27$161
This Priceline deal was found by Cheapflights users on 9/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:25 pmCLE - ONT
1 stop7h 40mFrontier
Thu 10/3012:05 pmONT - CLE
1 stop8h 46mFrontier
Deal found 9/29$165
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:25 pmCLE - ONT
1 stop7h 40mFrontier
Sun 11/25:53 amONT - CLE
1 stop13h 58mFrontier
Deal found 9/28$166
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/184:15 pmCLE - ONT
1 stop7h 27mFrontier
Sat 10/258:00 amONT - CLE
1 stop6h 46mFrontier
Deal found 9/28$169
This Frontier deal was found by Cheapflights users on 9/28. 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.
Fri 10/245:25 pmCLE - ONT
1 stop7h 40mFrontier
Sat 10/258:00 amONT - CLE
1 stop6h 46mFrontier
Deal found 9/28$170
This Booking.com deal was found by Cheapflights users on 9/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:15 pmCLE - ONT
1 stop7h 27mFrontier
Wed 11/58:00 amONT - CLE
1 stop19h 30mFrontier
Deal found 9/29$172
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:00 amCLE - ONT
1 stop15h 42mFrontier
Mon 10/136:53 amONT - CLE
1 stop15h 59mFrontier
Deal found 9/28$183
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:40 amCLE - ONT
1 stop7h 07mFrontier
Sat 10/258:00 amONT - CLE
1 stop6h 46mFrontier
Deal found 9/29$185
This Frontier deal was found by Cheapflights users on 9/28. 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.
Mon 10/205:25 pmCLE - ONT
1 stop7h 40mFrontier
Thu 10/3012:05 pmONT - CLE
1 stop8h 46mFrontier
Deal found 9/28$186
This Booking.com deal was found by Cheapflights users on 9/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:00 amCLE - ONT
1 stop15h 42mFrontier
Sat 10/181:37 pmONT - CLE
1 stop13h 30mFrontier
Deal found 9/29$188
This Priceline deal was found by Cheapflights users on 9/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:33 pmCLE - ONT
1 stop8h 17mFrontier
Mon 10/2711:53 amONT - CLE
1 stop11h 06mFrontier
Deal found 9/28$198

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 September 30, 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

Thu 11/13

6:00 am-11:10 am

1 stop8h 10m

Ontario

Mon 11/17

6:53 am-11:51 pm

1 stop13h 58m

$161

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Mon 10/27

5:25 pm-10:05 pm

1 stop7h 40m

Ontario

Fri 10/31

6:53 am-11:51 pm

1 stop13h 58m

$166

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Mon 10/20

5:25 pm-10:05 pm

1 stop7h 40m

Ontario

Mon 10/27

11:53 am-1:59 am

1 stop11h 06m

$227

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Thu 10/23

1:51 pm-11:50 pm

2 stops12h 59m

Ontario

Mon 10/27

6:53 am-12:47 am

2 stops14h 54m

$276

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 10/21

2:26 pm-10:22 pm

2 stops10h 56m

Ontario

Tue 10/28

1:15 pm-11:03 pm

1 stop6h 48m

$302

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Wed 10/22

5:09 pm-10:22 pm

1 stop8h 13m

Ontario

Sat 10/25

6:00 am-6:50 pm

2 stops9h 50m

$311

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 10/21

2:26 pm-10:22 pm

2 stops10h 56m

Ontario

Sat 10/25

1:15 pm-11:03 pm

1 stop6h 48m

$311

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Fri 10/24

5:09 pm-10:22 pm

1 stop8h 13m

Ontario

Tue 10/28

7:35 am-11:03 pm

2 stops12h 28m

$311

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Tue 10/21

2:26 pm-10:22 pm

2 stops10h 56m

Ontario

Thu 10/30

11:36 am-9:15 pm

1 stop6h 39m

$311

ClevelandOntario

CLE - ONT

CLEONT

Cleveland Hopkins Intl

Fri 10/24

5:09 pm-10:22 pm

1 stop8h 13m

Ontario

Sat 10/25

6:00 am-6:50 pm

2 stops9h 50m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Showing 1-10 of 23 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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cleveland-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 September 26, 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, 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 $327). 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 September 30, 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.

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 September 30, 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
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
8,931 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
3,157 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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 8h 10m. Frontier provides one of the quickest options available for as low as $161. Cleveland and Ontario are separated by a distance of 2002 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 United Airlines and American Airlines - these airlines can fly you to your destination from $276 and $286, respectively. Users have found that Frontier is 57% 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, 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 $327). 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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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 September 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$146Average$261FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$276Average$439FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$392FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$306Average$474FlexibilityNo cancel feeOn-time63%

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