HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$72+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
CMH — ONT
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Columbus to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$227
(Booking.com)

One-way from

$72
(Frontier)

Popular in

December

Cheapest in

September

Average price

$372
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. 9% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 November 5, 2025.

This Booking.com deal was found by Cheapflights users on 11/4. 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 11/208:21 pmCMH - ONT
1 stop6h 36mFrontier
Sat 11/2212:58 amONT - CMH
1 stop15h 38mFrontier
Deal found 11/4$227
This Frontier deal was found by Cheapflights users on 11/3. 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 11/148:03 pmCMH - ONT
1 stop6h 47mFrontier
Mon 11/176:53 amONT - CMH
1 stop9h 15mFrontier
Deal found 11/3$244
This CheapOair deal was found by Cheapflights users on 11/4. 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 11/258:21 pmCMH - ONT
1 stop18h 07mFrontier
Sat 11/2912:58 amONT - CMH
1 stop15h 38mFrontier
Deal found 11/4$253
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/66:43 pmCMH - ONT
1 stop19h 36mAlaska Airlines
Mon 12/156:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/4$314
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Thu 12/46:43 pmCMH - ONT
1 stop31h 46mAlaska Airlines
Sun 12/76:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/3$324
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/66:43 pmCMH - ONT
1 stop31h 46mAlaska Airlines
Sat 12/136:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/4$325
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Fri 12/195:35 pmCMH - ONT
2 stops40h 49mFrontier
Sun 1/46:45 amONT - CMH
1 stop9h 18mFrontier
Deal found 11/4$326
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 12/56:43 pmCMH - ONT
1 stop19h 36mAlaska Airlines
Sat 12/136:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/4$334
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/126:43 pmCMH - ONT
1 stop26h 50mAlaska Airlines
Mon 12/156:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/5$344
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/24:40 pmCMH - ONT
1 stop7h 02mUnited Airlines
Tue 12/96:41 pmONT - CMH
2 stops12h 06mUnited Airlines
Deal found 11/2$368
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Wed 12/36:43 pmCMH - ONT
1 stop19h 36mAlaska Airlines
Tue 12/96:00 amONT - CMH
1 stop8h 47mAlaska Airlines
Deal found 11/2$373

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 November 5, 2025.
Use the filters below to find and compare flights from Columbus Airport to Ontario that are best for you.

Fly from

Columbus

Fly to

Ontario

Route

Depart

Return

Price

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 12/9

6:43 pm-11:19 am

1 stop19h 36m

Ontario

Mon 12/15

6:00 am-5:47 pm

1 stop8h 47m

$314

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Fri 12/12

6:43 pm-6:33 pm

1 stop26h 50m

Ontario

Mon 12/15

6:00 am-5:47 pm

1 stop8h 47m

$344

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Thu 1/22

8:00 am-11:56 pm

1 stop18h 56m

Ontario

Sun 1/25

6:00 am-6:27 pm

1 stop9h 27m

$344

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 1/6

4:34 pm-9:07 pm

1 stop7h 33m

Ontario

Wed 1/7

1:10 pm-10:59 pm

1 stop6h 49m

$359

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 1/7

7:30 am-12:16 pm

1 stop7h 46m

Ontario

Wed 1/7

10:30 pm-9:58 am

1 stop8h 28m

$359

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 1/6

7:30 am-12:16 pm

1 stop7h 46m

Ontario

Tue 1/6

10:30 pm-9:58 am

1 stop8h 28m

$359

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 12/2

4:40 pm-8:42 pm

1 stop7h 02m

Ontario

Tue 12/9

6:41 pm-9:47 am

2 stops12h 06m

$368

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 1/7

7:30 am-12:16 pm

1 stop7h 46m

Ontario

Thu 1/8

1:10 pm-10:59 pm

1 stop6h 49m

$369

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 12/3

6:43 pm-11:19 am

1 stop19h 36m

Ontario

Tue 12/9

6:00 am-5:47 pm

1 stop8h 47m

$373

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 12/3

6:43 pm-11:29 pm

1 stop31h 46m

Ontario

Mon 12/8

12:13 pm-5:47 pm

1 stop26h 34m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 21 results
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 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
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 Columbus Airport-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Columbus Airport-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, May is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $112). Flying from Columbus Airport to Ontario in March is currently the most expensive (average of $257). 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 CMH to ONT?

Find hourly flight availability from Columbus 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 5, 2025.

A simple way to save on the total cost of your ticket is to fly from Columbus Airport to Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight at noon.

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 5, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United 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
4,240 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

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
7.9
Good
8,004 reviews
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

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
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

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
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

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 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 33m. Fly via Alaska Airlines or Delta to get the fastest option. There are 1944 mi between Columbus Airport and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Flying on United Airlines is currently your cheapest option to Ontario, with prices starting at $228. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $276 and $296, respectively. These flights start at 43% lower than the current average price 3 months from now.

  • 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, May is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $112). Flying from Columbus Airport to Ontario in March is currently the most expensive (average of $257). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$449FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$380FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$433FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$346Average$446FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.