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$92+ Cheap flights from Columbus (CMH) to Ontario (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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
CMH — ONT
May 18 — May 251
Mon 5/18
Mon 5/25
1 adult, Economy
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Cheap flight deals from Columbus to Ontario

Cheapest flights from Columbus to Ontario
Explore the most affordable flight options available from Columbus to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Frontier deal was found by Cheapflights users on 4/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:58 pm
CMH
-
ONT
1 stop17h 07m
Frontier
Sun 5/1010:50 am
ONT
-
CMH
1 stop27h 58m
Frontier
Deal found 4/13$187
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:58 pm
CMH
-
ONT
1 stop17h 07m
Frontier
Sat 5/910:50 am
ONT
-
CMH
2 stops27h 20m
Frontier
Deal found 4/13$209
This CheapOair deal was found by Cheapflights users on 4/14. 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 5/47:58 pm
CMH
-
ONT
1 stop17h 07m
Frontier
Fri 5/86:00 am
ONT
-
CMH
1 stop8h 48m
Frontier
Deal found 4/14$216
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:58 pm
CMH
-
ONT
1 stop17h 07m
Frontier
Wed 5/68:06 pm
ONT
-
CMH
2 stops18h 04m
Frontier
Deal found 4/13$217
This CheapOair deal was found by Cheapflights users on 4/13. 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 5/296:43 pm
CMH
-
ONT
1 stop18h 22m
Frontier
Fri 6/56:00 am
ONT
-
CMH
1 stop8h 48m
Frontier
Deal found 4/13$221
This Frontier deal was found by Cheapflights users on 4/17. 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 5/156:43 pm
CMH
-
ONT
1 stop8h 06m
Frontier
Fri 5/226:00 am
ONT
-
CMH
1 stop8h 48m
Frontier
Deal found 4/17$225
This Expedia deal was found by Cheapflights users on 4/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:08 pm
CMH
-
ONT
1 stop14h 23m
Frontier
Sat 5/212:59 am
ONT
-
CMH
1 stop15h 24m
Frontier
Deal found 4/17$230
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:05 pm
CMH
-
ONT
2 stops16h 30m
Frontier
Sun 5/1010:50 am
ONT
-
CMH
1 stop27h 58m
Frontier
Deal found 4/13$234
This CheapOair deal was found by Cheapflights users on 4/17. 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 4/308:08 pm
CMH
-
ONT
1 stop14h 23m
Frontier
Sun 5/312:59 am
ONT
-
CMH
1 stop15h 04m
Frontier
Deal found 4/17$236

Find flight deals from Columbus to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Columbus (CMH) 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 April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Kiwi.com)

One-way from

$92
(CheapOair)

Popular in

February

Cheapest in

September

Average price

$504
Provider with most accurate pricing for Columbus-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Columbus-Ontario flights.
Search Deals
From Columbus to Ontario
Search Deals
One-way flight from Columbus to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Columbus 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 April 18, 2026.
Use the filters below to find and compare flights from Columbus Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 5/26

7:30 am-12:19 pm

1 stop7h 49m

Ontario

Tue 6/2

12:07 pm-12:25 am

1 stop9h 18m

$347

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 5/26

7:30 am-12:19 pm

1 stop7h 49m

Ontario

Sun 5/31

10:00 pm-1:25 pm

2 stops12h 25m

$352

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 6/2

5:58 pm-11:34 pm

2 stops8h 36m

Ontario

Wed 6/3

9:50 am-12:25 am

2 stops11h 35m

$357

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 5/27

6:25 am-12:19 pm

2 stops8h 54m

Ontario

Wed 6/3

9:50 am-12:25 am

2 stops11h 35m

$357

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Fri 5/29

3:02 pm-11:34 pm

2 stops11h 32m

Ontario

Thu 6/4

10:00 pm-9:05 am

1 stop8h 05m

$444

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Sun 5/24

6:25 am-12:19 pm

2 stops8h 54m

Ontario

Sat 5/30

10:00 pm-9:05 am

1 stop8h 05m

$447

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Sun 5/24

6:25 am-12:19 pm

2 stops8h 54m

Ontario

Sun 5/31

10:00 pm-9:05 am

1 stop8h 05m

$447

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Sat 5/16

7:00 am-3:09 pm

1 stop11h 09m

Ontario

Wed 5/20

4:03 pm-5:40 am

1 stop10h 37m

$469

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 5/6

12:49 pm-11:43 pm

2 stops13h 54m

Ontario

Sun 5/10

4:57 pm-9:05 am

2 stops13h 08m

$472
Quickest round-trip

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Fri 7/3

9:00 am-12:47 pm

1 stop6h 47m

Ontario

Thu 7/9

5:45 am-4:02 pm

1 stop7h 17m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Columbus 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 Columbus to Ontario in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust 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 Columbus Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Columbus Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Columbus Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Columbus Airport-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 Columbus Airport-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 Columbus to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Columbus 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 Columbus Airport to Ontario

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

Currently, September is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $290). Flying from Columbus Airport to Ontario in February is currently the most expensive (average of $694). 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.

How much does it cost to fly round-trip from Columbus Airport to Ontario?

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 April 18, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Columbus Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,327 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,422 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,604 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,620 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Columbus 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 Columbus?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Columbus. On average, Ontario has 0 inbound flights from Columbus per day from 4 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Columbus Airport to Ontario?

    There are many flights that can get you from Columbus Airport to Ontario in 7h 49m. Fly via Delta to get the fastest option. There are 1944 mi between Columbus Airport and Ontario.

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

    Flying on Delta is currently your cheapest option to Ontario, with prices starting at $208. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $228 and $296, respectively. These flights start at 52% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $120. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Columbus Airport to Ontario for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Columbus 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 Columbus Airport to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $290). Flying from Columbus Airport to Ontario in February is currently the most expensive (average of $694). 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 4 airlines flying from Columbus to Ontario

Discover the top 4 airlines that operate flights from Columbus 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 April 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$344FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$228Average$488FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$296Average$436FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$342Average$449FlexibilityNo cancel feeOn-time63%

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